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  1. Trailer Brake Controller
  2. Tekonsha
  3. Electric
  4. Proportional Controller
  5. Up to 3 Axles
  6. LED Display
Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional

Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional

Item # TK90160
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Trailer Brake Controller
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Product Expert Kathleen M

Is this right for you? Product Expert Kathleen M says:

Yes, if you:

  • Want a brake controller from one of the most trusted names in the business
  • Haul a trailer only occasionally or mostly for short stretches

No, if you:

  • Have a trailer with hydraulic brakes
  • Rely heavily on the manual override function - the slide on this has a tendency to stick
  • Are limited on mounting locations in your cab and don't want to lose any leg room
Proportional brake controller automatically levels when mounted within a 90-degree vertical range. Includes digital display, 3 boost levels, battery protection and continuous diagnostics. Easily transfer between different automobiles. Lowest Prices for the best trailer brake controller from Tekonsha. Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional part number TK90160 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (1917)
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  • Why etrailer?

Tekonsha Trailer Brake Controller - TK90160

  • Electric
  • Proportional Controller
  • Up to 3 Axles
  • Tekonsha
  • LED Display
  • Under-Dash Box
  • Dash Mount
  • Automatic Leveling
  • Up to 90 Degrees

Proportional brake controller automatically levels when mounted within a 90-degree vertical range. Includes digital display, 3 boost levels, battery protection and continuous diagnostics. Easily transfer between different automobiles.


  • Brake controller activates trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
    • Activates immediately - no pausing like with time-delayed brake controllers
  • Automatic-leveling ability - internal sensor detects deceleration even if controller is not mounted flat
    • Position anywhere from -90 degrees to 90 degrees in the vertical plane
  • 3 Boost levels let you adjust initial braking power and aggressiveness
  • Continuous diagnostic check alerts you to any potential problems
  • Integrated safeguards protect your vehicle and trailer
    • Minimizes drain on car battery when not in use
    • Prevents trailer brakes from overheating by reducing power output to them during prolonged stops
  • Easy-to-read LED display
  • Built-in, slide-bar manual override
  • Quick-disconnect feature lets you easily remove and store the control when not in use
    • Replacement wiring harness (sold separately) and replacement bracket (6927 - sold separately) required to move the controller from one vehicle to another
  • Plug-in, vehicle-specific brake-control adapter (sold separately) can be used for certain applications to reduce installation time


  • Application: trailers with up to 3 axles (6 brake assemblies)
    • Designed for use with electric brakes only
  • Dimensions: 4-3/8" wide x 5" long x 2-1/2" tall
  • Mounting: between -90 degrees and 90 degrees in the vertical plane
  • Limited lifetime warranty

Proportional Braking

With a proportional brake controller, you can get heavy-duty emergency braking, general braking or slow-to-an-idle braking for your trailer automatically. The intensity with which your trailer brakes are activated and the rate at which they are applied are dependent on the deceleration of your tow vehicle. This means that, unlike time-delay controllers - which send the same amount of preset power to your trailer brakes every time - proportional controllers are able to adapt to every braking situation differently. So, if you slam on the brakes in your truck, your trailer brakes will activate with that same extreme intensity. And if you merely slow down as you approach a red light, your trailer will gradually brake in the same manner. Just set the initial power level, select a boost setting, and you're good to go.

As long as the Primus IQ controller is properly mounted and is pointed in the direction of travel, it will sense - via an internal inertia sensor - how your tow vehicle brakes. This inertia-based sensor responds to the deceleration of your tow vehicle as you brake by signaling the controller to send out enough power to your trailer brakes so that they are activated with an intensity that matches. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.

Power Boost for Heavy-Duty Towing

Aside from smoother, more efficient braking, Tekonsha's Primus IQ brake controller also offers a boost feature that gives you more initial braking power for those times when you're towing heavy loads. You can switch boost levels so that the power output to your trailer brakes automatically starts out at either 13 percent or 25 percent of the predetermined power setting.

So, if you boost the initial power so that your trailer brakes activate with 25 percent of the overall intensity at the start, the brakes will reach maximum braking faster. This is particularly beneficial if you are towing a heavy load because the intensity required to stop that load may be far greater than that needed to halt your vehicle. Therefore, sending out more initial power to the trailer brakes - and causing them to reach maximum braking faster - allows you to better control the trailer so that it doesn't push your tow vehicle before coming to a complete stop.

If your trailer weighs less than your tow vehicle, no boost is needed. But if you wish to set the boost so that your trailer leads the braking of your towing setup, you can select level B1. The following table gives an indication of when you might use the different boost levels and the power increases that they offer.

Approximate Gross Trailer WeightBoost LevelIncrease in Initial Power Output
Less than tow vehicleGVWB113%
Equal to tow vehicleGVWB1 or B213% or 25%
Up to 25% more than tow vehicleGVWB2 or B3*25%
Up to 40% more than tow vehicleGVWB3*25%

*Both B2 and B3 offer a 25-percent boost in initial power. But the braking curve for B3 is more aggressive than that of B2. This means that, even though you will start out with the same intensity when using these boost levels, you will get an overall more aggressive braking experience with the higher level. So if you use B3, you will reach maximum braking sooner than if you use B2.

Safety Features

The Primus IQ offers advanced safety features to prevent damage to various components of your towing setup. For example, when it is not in use, this brake controller will be in power-saving mode. In this setting, the power draw falls to minimize drain on your vehicle's battery.

When you stop at red lights, or any time that your truck and trailer are at a standstill with the brakes applied for more than 5 seconds, the Primus IQ's "hold" feature will activate. When this happens, the power output to your trailer's brakes will be reduced to just 25 percent of the preset power setting so that the brakes will not overheat.

If ever there is a time that you need to brake your trailer separately from your tow vehicle - when traveling down a steep incline, for example - the manual override is easily accessible. Pushing this slide bar engages the brakes on your trailer with full power. In addition, when you activate this override, the brake lights on your trailer will illuminate, properly warning those behind you of the braking action of your rig.

In addition to all of those safety features listed above, the Primus IQ offers diagnostics such as:

  • Open ground
  • Overload
  • Output short
  • Faulty mounting
  • Power loss
  • No trailer connection

Automatic Leveling and Simple Installation

The self-leveling feature of the Primus IQ ensures that the brake controller continues to function even as you drive up steep hills or through the mountains. Simply mount it in your cab at a vertical angle that is between 0 degrees (level) and 90 degrees, and the controller will level itself automatically.

Correct Primus mounting90-Degree Primus mounting

Note: The Primus IQ must be mounted on a level horizontal (side-to-side) plane and must be lined up with the direction of travel for the internal sensor to function properly.

Installation is a snap. After mounting the Primus IQ unit in your cab using the included bracket, hardwire one end of the included pigtail harness directly into your vehicle. The other end plugs into the brake controller. To transfer the Primus IQ to another vehicle or to remove it for storage, just unplug the unit and snap it out of the bracket.

Installation Accessories

For even easier installation, a vehicle-specific wiring adapter (sold separately) is available for most newer trucks and SUVs. One end of the custom adapter plugs into your vehicle, and the other end plugs into the controller - no hardwiring required.

Note: If a custom brake-control wiring adapter is not available for your vehicle, one of the following will be required:

20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications

30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications

See also's exclusive 7- and 4-way brake-control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.

90160 Tekonsha Primus I-Q Proportional Trailer Brake Control

39528 Hidden Hitch Proportional Brake Control

20191 Draw-Tite I-Stop IQ Proportional Brake Control

Installation Details TK90160 Installation instructions

California residents: click here

Customer Reviews

Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional - TK90160

Average Customer Rating:  4.9 out of 5 stars   (1917 Customer Reviews)

Proportional brake controller automatically levels when mounted within a 90-degree vertical range. Includes digital display, 3 boost levels, battery protection and continuous diagnostics. Easily transfer between different automobiles.


No complaints. Easy install with the adapter harness. Plug and go. I installed this in a 2020 RAM 1500 and gotta say, difficult to find an under-dash location that doesn't interfere with your legs. A lower profile controller could have helped or more room from RAM ... blame whoever you like there. I put mine under-dash on the left - just seemed better.

A great controller and mostly out of the way. The RAM 1500 doesnt make it easy but its certainly workable. Ive only scuffed my shin on it a couple times.
Bosco - 08/07/2022

by: 03/18/2021

Had no issues with installing it at all. Everything worked like it said it would.

Thanks to how well this brake control works my business brings my family [thousands] of dollars. I would buy these every time I need them no questions asked.
Richard M - 03/22/2022


The Tekonsha break controller was delivered a day ahead of schedule and the plug and play wiring harness enabled me to install the unit on my 2021 Ram DT, in time to tow my camper to the campsite. The Primus IQ works great. I would recommend your company without hesitation.


2011 f150 3.5EB XLT superCrew. Easy plug and play install with the harness I bought also on etrailer, the problem was mounting. I hated the way the supplied mounts looked and didn’t want to bump into it. With some careful measuring and a hacksaw I was able to mount it inside the “plastic cup thingy” that fills the void where the factory controller would be. Attached pictures, the factory plastic cup thingy screws keep it locked in place and the supplies screws let’s you mount the controller into the plastic cup. Looks crooked with the white/silver plastic covering but it is aligned with direction of travel and level, also berey snug and mounted solidly.


I don’t know because it didn’t come with plug and play wiring as described. After asking for specific vehicle information one assumes that the wiring included was vehicle specific. However no. I ordered the adapter wire from {online] . I thought it was deceiving and resulted in an inconvenience to me.

You will want to make sure to enter in your year, make, and model before ing a brake controller and it will give the vehicle specific adapter. For a 1995 Ford 250 - 350 the adapter would be part # 3035-p.
-- Etrailer Expert Jenny N - 03/22/2022


THANKS for the Brake Controller unit from ETrailer. It arrived w/in 5 days from your MO location to my So CAL residence.

Even as an Engineer/Scientist from the Delta IV rocket program and no experience with brake controllers, I was able to install this unit by myself. Your continued (live human) support and online video clips proved to be the key elements to this installation...without my symbolic pocket protector.

I have attached a few images of the unit, mounted to the fuse-panel cover (3/16 attachments with locking hex nuts) in a 2006 Toyota 4Runner SR5 (with factory tow package). The placement of the unit onto the panel cover allows a new panel cover (no holes drilled) to be used when it is time to sell the vehicle.

Thanks Patrick for the follow-up. The brake controller, for the camp trailer, installation went relatively easy and operation of the unit continues to be great. More importantly is your product follow-up for Customer Service...providing a r-e-a-l name vs. Customer Service dept. along with a phone number and email contact information all pretty rare in todays environment. E-Trailer continues to be my first-source for product information search.
J - 12/19/2014


I used this trailer brake with the separately purchased adapter. Very simple to install just plug and drive! Make sure you take sometime for placing the controller. On my truck 1999 Ford F-350 I have a manual transmission and I barely touch the controller when I put it in reverse. Everything worked so well I spent 7 hours cleaning and waxing my truck for head to toe! Even cleaned all the door jams! Won’t need a new truck until the government bans diesel! PS. The controller works great too.


I have installed the Tekonsha Primus IQ Brake Controller with the ETBC7 Brake Controller wiring kit on my 1990 Chevy Blazer Scottsdale. Everything that I needed was included and the installation instructions were simple. We will be trying it out for the first time in early November when we are going to rent a small travel trailer. If we like the experience we may buy a travel trailer to go with our brake controller! Before and after pictures attached. Thanks for the quick service and support.

Brakes work perfectly. Our rental trailer worked out great for an 800 mile round trip and 4 nights at a Florida State Park. We bought a used 20 travel trailer in February and have taken it on two short trips and a month long vacation. We have had no problems at all and now have almost 3000 miles of towing behind us. One emergency stop was exciting, but the rig stayed perfectly straight and probably stopped shorter than the Blazer would have done without the 4 extra brakes behind it. Thanks for all of your help and support.
V J - 10/02/2016


Product was delivered on time. Installation vehicle was a 2012 Ford Expedition Limited with factory tow package and was a breeze. I purchased the pre-wired pigtail which fit the Ford connector with no problem. I used the snap-in plastic bracket, mounted on the knee panel as close as possible to the center console. I held the bracket in place using painters tape to check the mounting position before driving in the self tapping screws. Start to finish was less than 10 minutes. I pull a 29' tandem axel travel trailer which comes in around 7,000 lbs and so far, stopping has been smooth and even with no jerking.

After a year of use I am very impressed with this controller. Previous controllers I have used tend to be too aggressive on applying the trailer brakes, especially in stop and go driving, but not this unit, it is very smooth. However, when needed, as in one emergency stop last year it pulled us up quickly and straight. I would certainly recommend this product.
Steve M - 12/27/2017


Works like a dream on my single axle 3200 lb travel trailer and my 2017 Toyota Tacoma. Like many of the other Tacoma owner reviewers, I mounted my Tekonsha Primus IQ controller in the small cubby to the left of the steering wheel and ran a couple screws up through the lower switch access to mount the bracket hidden inside the dash. Ended up looking like a factory install, exposing just enough of the unit to access the controls and read the display.


Pictures of the install. Approximately
a 20 min job. First picture my finger is pointing to the factory plug with the etrailer supplied harness plugged in. Note the harness did not specify that the white common with the ring terminal should be connected to ground. But then again that SHOULD be obvious. I will be towing this weekend so I will rate the product then. One minor gripe is that there is always power to the unit which is a battery drain (as evidenced with the key out of the ignition and the unit stayed on) Not sure as to the impact but the controller can always be unplugged or removed.
Sorry for the dirty floor mats in the photos.

Just a quick note, there is an automatic shut-off on the Primus IQ. After 15 minutes or so of in activity, the controller will power down automatically. As soon as the controller detects movement, it comes back on. No battery drain, and you do not have to remember to turn the controller off or on.
-- Etrailer Expert Patrick B - 01/30/2014
what year Tundra in pics . I have a 08 and I am going to get an IQ for it . do you still like yours ? i guess a ground is needed ? I see what looks like a one white wire with harness
-- comment by: Les H - 08/09/2015


installed on a 2009 F-150 everything was as advertised. It was plug and play. My truck had the wire plug behind the dash so was easy to hook up. I installed it in the hole below the coin holder. To reach the pre-wired plug you have to remove the panel anyway. I don't like any wires showing or anything I might hit with my leg. So did not mount it on the lower dash. You have to pull the plastic box out to unplug the connector. So just cut off the back of the box off and run the connector through the hole and connect to the controller. This way you can remove the controller anytime you want. Also you can see the readout much easier then mounting it on the lower dash. See pics

alan - 01/18/2018


I've been running the Tekonsha Primus IQ for just over a year now. Very pleased w/ it.
Simple set up & operation. I tow a variety of trailers w/ my '07 2500 HD including dump trailer w/ firewood, car hauler, and enclosed cargo trailer. The weights are anywhere from empty, to 5k. Very easy to adjust as conditions change. I borrowed a trailer from a family member and the controller picked up a short. Come to find out a wire was pinched from ramps being slid in on the underside. The digital screen notified me before loading it up and hitting the road. I would recommend this product.


I haven't hooked up my trailer yet but the connecting and mounting instructions are easy to follow and my vehicle came with a brake controller wiring pigtail which made installation even easier. It powers up and responds the way it is supposed to. I have no doubt it will work properly based on hundreds of other 5 star ratings.


Great trailer brake controller easy to use works as advertised easy install just followed the instruction video.


This is a great controller. I have a small single axle trailer and it was easy to set up and adjust. The only thing I had to do custom was to install some small wood shims between the bracket and the underside of the dash so that the unit would be level when mounted. This was due to the fact that the underside of the dash was curved and sloped. I like that I can easily disconnect and reconnect the unit when not in us, because the bracket stays mounted to the dash.

Peter - 09/28/2021


Installed quickly an easily into my 2009 GMC Sierra 2500HD by wiring up to the factory harness. Be sure to watch the video to see which wires need connected at the fuse box in the engine compartment! (Easy hook-ups, just need to make sure you see which ones get hooked up and where.)

And if you don't use your ash tray, these brake controllers squeeze nicely into the ash tray compartment/recess in the lower part of the dash. Makes a great place to keep most of the controller out of the way and it's easy to install (you will have to create 2x new holes in the plastic detachable controller mounting bracket but its very easy - you can see the mounting screws in the 'new' holes and the old holes go unused as shown in the photo).

Only had a trailer hooked up once, but the controller functioned as designed. I think the 'Boost' function will come in handy if I use a well-loaded trailer and need some additional stopping power from the trailer.


This is a great controller, recommended by my trailer manufacturer. I actually don't know too much about it, how it works, etc. But it doesn't require much knowledge to use it. Install it like instructed by etrailer it just works. You can see the number goes up as you apply more pressure on the brake pedal, and the trailer stops with no problem. It's magic.
The only thing I wished they do is to supply a longer length of the thin wire to connect to the break line. For my 2013 CRV, the break line you need to tap into is on the left side of the steering column, if you want to install the break controller on the right side, the wire is a little so short; but you can make it, it's just a little tight. I want to install the break controller to the right side of the steering column because I don't want to accidentally bump into it every time I get in and out of the car. It's a great, the best product though.


Shipping was great. Stared at it for a couple of days before unpacking. The trailer connector mounting was easy with the holes almost matching the existing holes on my 2013 Toyota Highlander. The first four wires are a snap, they are just plugged into the existing four pin connector. I routed the two wire cable towards the front using ty wraps and improvised L brackets fixed to existing chassis screws.

I mounted the Circuit Breakers on the inside of the left fender making sure there was hood clearance (see photo). Then I hit a snag. There was no easy way to get the brake and 12V power wire to the brake controller inside the car. For grins, I goggled "brake controller video" for my car and came up with a video made by "eTrailer." (Thank you eTrailer) Three things from the video helped me: wire access from inside the car through the firewall, a place to mount the controller and how to locate the brake wire. After the installation I had 18" of two wire cable left over. The install took me about six hours. (I'm 71 and I took my time.)

A couple days later I connected the trailer for a test ride. The brake controller worked like a dream.

Things I liked: Retaining the four wire trailer plug setup next to the seven wire trailer plug. Controller display works but you don't have to look at it. The two wire cable was adequate for the job. Being an Engineer (retired) I worry about things like that.

Thing I didn't like: The mounting plate for the trailer plug is a little weak. A stiffer plate would have been better suited for me. and, oh yeh, somebody else to install it. ;=)


The break controller works great. I have used it several times since it was installed. The installation video was spot on.


ETrailer's customer service is second to none! This was a replacement for a brake controller that went bad. They made the exchange process extremely easy.


Installation was straightforward with help from the online videos. I also installed the ETBC7 universal installation kit. At first I thought etrailer had shorted some parts, but it turns out that the 18140 bracket is sold separately. Had to take back the choice words I uttered under breath. Ended up mounting the provided bracket directly to the hitch with screws which was a little more difficult. As a safety measure--and a little on the overboard side--I also used a dremel to cut a small slit in the center of the provided bracket so I could attach a hose clamp similar to the one in 18140.
Space inside the cab for mounting the brake controller was tight.
Nonetheless, all works fine per my test meter. Don't yet have a trailer to connect, but meter checks out fine.


Installed in my 2014 GMC Acadia in about 30 minutes. Used the GMC plug-in wiring adapter. No problems. Looks like it was made for that location.

Still working great
Terry G - 08/21/2019


IT WORKED PERFECTLY. This is my first time to purchase, install, and use a brake controller. Add to top it off, it was my first time to pull a trailer. It was on a Saturday, exactly six days before a scheduled tent-camping trip, when my wife found a good deal on a used pop up camper. The camper was equipped with electric brakes, so it was required to install a brake controller on my SUV. It was Sunday (next day) when I ordered the Tekonsha TK90160, along with the other necessary part numbers #118449, #A0500, #18136, #ETBC7. I was planning to take the parts to a shop to have it installed as soon as I received them. I was hoping I can get them on Tuesday, but UPS dropped it off to the local post office, which caused it to be delivered at 3pm on Wednesday afternoon. The shops that I went to either did not have an installer available, or were all booked for the week. I had to "take courage" and install it myself. I am so thankful that provides extensive videos of reviews, installation, and operation of the products that they sell. I made the connections as shown and hoped for the best. I picked up the camper on Thursday, and was sooo relieved that it worked perfectly. We took off on Friday and the camping trip was a success. We are looking forward to making more good memories with our camper. Thank you etrailer!


I was in a bit of a spot and needed a trailer braking system in a hurry for my 2018 GMC Sierra pickup. After looking around at all the local automotive shops and part stores in the area... I was at my wit's end as no one that I spoke with had any information as to whether or not the unit they had would work for my truck. So I jumped online as it was getting down to crunch time and I needed the unit as I was to pick up the travel trailer and a couple of days. I went online and found
After very little research and a quick phone call to tech support... they knew exactly what I needed along with the adapter cord that plugs right into the fuse panel. It took me all of 10 minutes to install the unit and it works phenomenal. Also due to the amount of time I had to get the unit and get it installed they expedited the shipping and I had it the next day. These folks know exactly what they're doing and what you need and will not disappoint. I have never had an easier and more pleasurable installation of an aftermarket product. I cannot recommend them highly enough. Thank you very much again a very satisfied customer. I purchased the Primus IQ which is a proportional braking system and again it came with a harness that went right into the fuse panel in my truck. The instructions were easy to follow and a unit works very very well. As I said 10 minutes to put it in at the most. Great job guys thanks again.

I actually transferred this trailer braking product out of my 2018 GMC pickup and moved it into my 2021 GMC pickup all I had to do was change the wiring harness which I picked up from and the braking system and controller Works phenomenal and continues to work for me for the price of replacing the wire harness between the controller and the fuse block behind the dash. The instructions were simple and again the breaking product works excellent
Steven T - 07/01/2021

Show More Reviews

See what our Experts say about this Tekonsha Trailer Brake Controller

  • Troubleshooting Primus IQ Brake Controller that Is Jerking Trailer and Vehicle
    Since you said the Primus brake controller part # TK90160 was possibly bumped you should check the mounting of the controller as it has to face squarely to the rear of the tow vehicle and has to be at the correct angle to operate properly as well. I attached pictures that shows the correct way the controller has mount for the inertia sensor to function properly without jerking the brakes. If the trailer is jerking when you aren't applying the brakes of your tow vehicle and you are seeing...
    view full answer...
    Image 1 for Image 2 for
  • Replacement for Tekonsha Sentinel Brake Controller
    The Tekonsha Sentinel brake controller does not have a fuse that can be changed if it's display lights are not working; this is one of the older brake controllers which has long been discontinued and if the display lights have gone blank, the controller does need to be replaced. Thankfully, there are really good options which are proportional (which means the controller senses the amount of deceleration and activates your trailer's brakes in proportion to that) and can be had without breaking...
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  • Clicking Noise From Tekonsha Primus IQ Trailer Brake Controller
    It sounds like you have some wiring issues with the Tekonsha Primus IQ Trailer Brake Controller part # TK90160. The clicking noise is caused by the brake controller turning itself off due to a short detected. Therefore, you will need to check each of the wires for the brake controller and how you have them ran as it sounds like you could have more than one issue. The red wire will go to the cold side of the brake pedal, the white wire will go to the negative battery terminal, the black...
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  • Is There A Way To Test the Brake Magnets Without Removing the Hubs/Drums On a Trailer
    The process to test the brake magnets on a trailer does require you to remove the hub/drums, there is no way around this unfortunately. However, testing the brake magnets which can be see in the attached article is really only a last ditch effort. I would first start off by resetting the brake controller which can be done by unplugging if from the vehicle and then waiting 15 minutes or so before plugging it back in. If you still have issues then trace the blue brake output wire from the...
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  • Constant Power On Brake Controller Without Brake Pedal Depressed
    I suspect that you have an internal error on your brake controller or a wiring issue. In order to test for an internal error you will want to sever the brake output wire from behind the controller and test for power. If there is power on this wire without the brake pedal depressed or the manual override applied then there is an internal error and it will need to be replaced. In regards to the stop light switch wire, there should only be power here when the brake pedal is depressed. If...
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  • Troubleshooting Tekonsha Primus IQ Brake Controller Sending Minimal Power with Brake Pedal Depressed
    I have good news. As you mentioned in your question, the Tekonsha Primus IQ Brake Controller # TK90160 is a proportional unit. This means that the controller is going to send a brake output back to the 7-Way in proportion to the vehicle's deceleration. Because of this it will send minimal power when testing it by depressing the brake pedal when the vehicle is parked. The manual override will always send back full power which is why you got 14V when applying it. This essentially means...
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  • What Does NC on Primus IQ Brake Controller Mean When Starting Vehicle and Then Disappearing?
    The NC on your Tekonsha Primus IQ Brake Controller # TK90160 is simply showing power to the brake controller without a trailer connected. It should do this and display for a 15 seconds before going away. The NC means the brake controller is seeing no trailer connection. The button being pushed should not show anything when a trailer isn't connected. When a trailer is connected it would give you a power output range between 0.0 volts and 13 volts. I've attached a photo of part of the...
    view full answer...
    Image 1 for
  • Does Tekonsha Primus Brake Controller Need to be Reset to Clear Error Codes
    The error codes of the Tekonsha Primus # TK90160 are designed to automatically reset when the issue has been resolved. If you are still getting an SH code that would indicate that a short is still present on the circuit. Keep going over the wiring looking for additional broken/exposed wires and fix as needed. I attached a help article that covers more on troubleshooting brake controller installs for you to check out as well.
    view full answer...
  • Removing Primus Brake Controller to Use in Another Vehicle?
    It is quite easy to remove the Tekonsha Primus IQ Trailer Brake Controller part # TK90160 and get it installed on a new vehicle. Generally this is installed using a custom pigtail and it is simply plug and play like on your 2012 Frontier there will be a pigtail that connects the wires from the Primus to the brake controller port under the dash of your Frontier just unplug it at the factory connector. After that remove the bracket that holds it to the dashboard. You can then use one of...
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  • Does Tekonsha Primus IQ Trailer Brake Controller Eventually Shut Off if Left Alone
    Brake controllers like the Tekonsha Primus IQ part # TK90160 that you referenced will go into a sleep mode after about 15 minutes or so which prevents any battery drain. But even if they didn't do that the LED light that is on draws such a small amount of amperage it wouldn't kill the battery.
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  • Troubleshooting Tekonsha TK90160 Brake Controller Displaying SH Error Code
    The SH error code in your # TK90160 Tekonsha Primus Brake Controller indicates that there's a short somewhere in the brake output circuit. This short can exist in the wiring that joins the controller to the vehicle, in the wiring between the vehicles's tow package connection under the dash and the trailer connector, in the connectors, in the wiring on the trailer or the brake magnets themselves could be worn which causes a short circuit. Since you've looked over the wires, we can skip that. One...
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  • Will LED Display on Tekonsha Primus IQ Turn Off After 15 Minutes of No Motion
    After 15 minutes of the vehicle being shut off and there being no motion the LED display for the Tekonsha Primus IQ # TK90160 will be blank as per the instructions (see attached). If you are going out to check on it after 15 minutes make sure that you only peer through the window because it you open the door to look then it's very likely that the motion is waking up the brake controller from power saving mode. If you're vehicle battery is draining and this started when the controller was...
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  • Can Tekonsha Primus IQ Easily Wire in as Replacement for Voyager Brake Controller
    Yes, you can wire the Tekonsha Primus IQ part # TK90160 color for color in place of your Voyager and you'd be set!
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  • Why is My Primus Brake Controller Activating at Highway Speeds?
    After talking to the manufacturer this problem can be caused by the Primus IQ part # TK90160 not being mounted level in the vehicle. They suggested to unplug the controller for approximately ten minutes , level the controller in the vehicle, clean your connection points, and re-install the controller.
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  • Does the Tekonsha Primus IQ Trailer Brake Controller Drain Battery When Not in Use?
    Part # TK90160 should go into a sleep mode after about 15 to 20 minutes of no activity in the vehicle. This sleep mode can be interrupted by unlocking and opening the doors So it's pretty hard to notice. This keeps the battery from draining. There are two small led lights that can drain the battery over long periods, but it won't drain the battery unless the vehicle sits for long periods of time. You can unplug it when it is not in use for piece of mind, but there isn't an actual off...
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  • Recommended Brake Controller for a 2013 GMC Yukon XL
    The 2013 GMC Yukon XL should have come with from the factory both a trailer hitch and 7-way trailer connector so all you will need to make the vehicle capable of towing a trailer with brakes is a brake controller. For this, the Tekonsha Primus IQ Trailer Brake Controller part # TK90160 is an excellent option and what I recommenced. The Tekonsha Primus IQ has boost settings for increased braking, diagnostic checks for easy troubleshooting, and an easy to read LED display. Please note,...
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  • How To Install Tekonsha Primus IQ Trailer Brake Controller On 2009 Saab 9-7X
    The Tekonsha Primus IQ Trailer Brake Controller part # TK90160 is an excellent option for a 2009 Saab 9-7X. That said, I checked with not only Tekonsha but all other aftermarket trailer brake controller manufacturers and none offer a plug-in adapter for this vehicle. However, if the vehicle does indeed have a pre-wired brake controller port the manufacturer (Saab) will offer a pig tail harness which plugs into the port on the vehicle and then splices into the brake controller. If not, you...
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  • Troubleshooting Tow Vehicle Brakes Heating Up When Towing with Tekonsha Primus IQ
    The Jeep brakes won't have anything to do with your Primus IQ brake controller # TK90160. The output for the controller only goes to your 7-way trailer connector and does not go to any aspect of your vehicle. Towing uphill should not have any impact on your brakes, but could have a similar smell if your transmission is overheating which would make more sense. I recommend having your vehicle checked out by a mechanic because the brakes should not be impacted at all by towing uphill....
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  • Installation of Brake Controller Stop Light Wire on 1999 Toyota Tacoma
    For your 1997 Toyota Tacoma, the cold side of the brake light switch is a green wire with white tracer based on my research. This is what you will connect the red wire of the # TK90160 to. You can see this install will be similar to the 2003 Tacoma at the 18:30 mark.
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  • 2017 Chevy Colorado Brake Controller Installation
    The Tekonsha Primus IQ Trailer Brake Controller # TK90160 does come with the wiring to connect to your 2017 Chevy Colorado. There isn't a plug and play harness, but your truck has the wires for the brake controller already run under your dash. I've attached a video of this installation for you to assist.
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  • Pre Collision Warning Error After Brake Controller Install on a 2017 Toyota Highlander
    The Collision System Malfunction error message that you are experiencing on your 2017 Toyota Highlander after installing the Hopkins Reliance Trailer Brake Controller is a result of power backfeeding on the stop light switch wire into the collision system. In order to eliminate this you are going to need to install a 1 amp diode on the red wire between the brake controller and vehicle's wiring harness. This will then prevent power from backfeeding and allow you to use the Reliance on your...
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  • Troubleshooting Trailer Brakes that Lock Up Randomly on Highway or at Slow Speeds
    Does the brake controller display show anything on the display when the brakes lock up? It sounds like you have a short between the 12 volt accessory circuit of your trailer wiring and the brake output circuit which is intermittently locking the brakes up. But if that were the case or if it was any other type of electrical issue you'd most likely see an error message on the screen when it was happening. With the brake controller unplugged did the problem go away or persist? How is the...
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  • Primus Brake Controller Shows H5 Error
    H5 isn't an error code I am familiar with for the Primus # TK90160. There is an SH error and the S would look like a 5. That indicates a short circuit. H5 would seem to indicate the controller was either upside down or went a little bonkers from the short. The most likely culprit is a dirty or corroded trailer connector vehicle or trailer side. Corrosion can cause power draw from another circuit to the brake output circuit. Make sure the vehicle and trailer side connectors are clean and...
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  • Troubleshooting Weak Trailer Brakes of R-Pod Travel Trailer
    The Tekonsha Primus IQ part # TK90160 that you referenced would have more than enough power for your R-Pod travel trailer's brakes. Most likely your issue is not related to the controller at all unless the controller isn't sitting level. Typically weak brakes are due to improper brake adjustment. You will want to have the adjustment screw tightened to the point where the wheel locks up and then back it off 10 clicks. Check out the video I attached at the 4:25 mark. If the trailer is new...
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