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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
Our Price: $103.94
You Save: $60.94
Trailer Brake Controller
Shipping Weight: 1.09 lbs
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This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics. Great 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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Tekonsha Trailer Brake Controller - TK90160

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

This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics.


  • Brake controller activates trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
  • Straight-forward controls keep settings within easy reach
    • Gain setting lets you adjust the amount of power sent to the trailer's brakes
    • 3 Boost levels let you adjust initial braking power and aggressiveness
    • Slide-bar manual override allows you to control trailer sway or stop in emergencies
  • LED display shows your current settings and diagnostic information
  • Built-in safeguards protect your vehicle, trailer, and the controller
    • Runs continuous diagnostic checks to alert you to any potential problems
    • Minimizes drain on car battery when not in use
    • Prevents trailer brakes from overheating by reducing power output to them during prolonged stops
  • Quick-disconnect feature lets you easily remove and store the controller when not in use
    • Replacement wiring harness (sold separately) and replacement bracket (6927 - sold separately) required to swap controller between vehicles
  • Easy installation with automatic leveling
    • Position anywhere from -90 degrees to 90 degrees up and down
    • Controller must be parallel with direction of travel and horizontally level
    • Included harness hardwires to vehicle and plugs into controller
    • Plug-in, vehicle-specific adapter (sold separately) available for select vehicles to reduce installation time
    • Mounting bracket and hardware included


  • Application: trailers with up to 3 axles (6 brake assemblies)
    • Compatible with electric brakes only
  • Dimensions: 5" long x 4-3/8" wide x 2-1/2" tall
  • Mounting range: between -90 degrees and 90 degrees vertically
  • Limited lifetime warranty

Gain Power Adjustment

Tekonsha Primus IQ Gain

You can adjust the gain (also known as output) with the thumbwheel on the front of the controller. Gain lets you set the maximum amount of power that will be applied to your trailer's brakes. A heavier trailer will need more power to achieve smooth, safe braking, while a lighter trailer will need less. Typically, the gain is only readjusted when you experience changing road conditions or if the weight of your trailer changes.

Power Boost for Heavy-Duty Towing

The boost setting controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. You can adjust this when you're towing heavy loads and you need more umph to bring your trailer to a stop. Your tow vehicle doesn't need that much power to brake in time, but your heavy trailer does.

Depending on the level of boost, your trailer brakes can start at either 13 percent or 25 percent of the set gain. What this means is that, instead of starting at 0, the brakes will start at 25 percent and get to 100 percent sooner. This keeps the trailer from pushing your tow vehicle forward.

If your trailer weighs less than your tow vehicle, no boost is needed. But, if you want your trailer to lead the braking, you can select level B1.

Boost Levels:

Approximate Gross Trailer Weight Boost Level Increase in Initial Power Output
Less than tow vehicle GVW B1 13%
Equal to tow vehicle GVW B1 or B2 13% or 25%
Up to 25% more than tow vehicle GVW B2 or B3* 25%
Up to 40% more than tow vehicle GVW B3* 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.

To adjust the boost, use the blue push-button on the top of the Primus IQ.

Slide-Bar Manual Override

Tekonsha Primus IQ Manual Override

The Tekonsha Primus IQ comes with an easy-to-reach, slide-bar manual override, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just push the slide-bar to the left, towards the center of the controller. This will activate the trailer's brakes and brake lights without you having to apply the brakes on your tow vehicle, perfect for limiting trailer movement while you're cruising.

Quick, Simple Installation

The Primus IQ can mount between -90 degrees and 90 degrees vertically, but the brake controller still needs to be horizontally level and parallel with the direction of travel.

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 remove the IQ for storage when you're not using it, just unplug the unit and slide it out of the bracket. With a replacement wiring harness (sold separately) and replacement bracket (6927 - sold separately), you can even transfer the IQ to another vehicle.

Installation Accessories

See'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

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

Proportional Braking

What is proportional Braking

The Tekonsha Primus IQ brake controller comes equipped with proportional braking to give you the best towing experience. Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes will activate with the same intensity; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.

The Primus IQ uses an internal inertia sensor to detect how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.

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Installation Details TK90160 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (2051 Customer Reviews)

This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics.


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.


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.

Steve M.


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.


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.

V J.


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.


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.

Etrailer Expert

Patrick B.


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.

Les H.


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


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





I installed the Tekonsha Primus IQ Brake controller in my brother's 4 Runner just before he and his wife took their small (18 ft) camper on a month long trip out west. It did what was expected of it... Proportional brake control, with little adjustment after initial set up!


I love these controlers. Can adjust perfectly and no jerking of the e brakes. Big on stopping whether it’s a hard or soft stop. No locking up of the trailer wheels.


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.



I finally installed the brake controller and it was easy to follow the instructions and it worked perfectly during my test runs. Shortly thereafter the wife decided the Expedition was too large for her to drive comfortably and we sold it. Not my first experience with Tekonsha brake controllers. It is a reliable product.


Only used on last year's trip,worked flawlessly once set.Would recommend.2005 f150 with factory tow package.


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.


Not my first Tekonsha and it won't be my last. Their brake controllers are flawless and easy to install, especially with a Tekonsha adapter. Installation took me no more than 15 minutes. The hardest part is figuring out where to mount the controller on my dashboard.


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.


Installed easily and now trailer brakes better with truck with no lock ups and is easily adjustable to road conditions while in motion. It is very nice to look at display and see the trailer plug is or is not connected.



What I have really appreciated is the ability to adjust the brakes as circumstances dictate. By glancing at display when I brake, to see how the trailer is responding, gives me real time ability to adjust as needed.


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.


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.


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. ;=)


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.

Terry G.


Still working great


The controller works well with my truck.



The controller installation was easy and it has worked well.


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!


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.


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.


Installed this in my 2018 Tacoma TRD Off Road.
After removing the sill trim and Kick plate to find the Factory Plug.
I took the Bottom left dash down (3 Bolts) and some clips to gain access to the small cubby on the left of the steering wheel. Popped it out, trimmed it to fit with my Dremel and held the Unit in place with 3-M automotive trim tape. I only had to cut the sides of the cubby and a square hole for the plug to the unit. Looks Factory installed.
All in all it took a couple of hours to do. my truck has only 135 miles on it so I was extremely careful.
As you can see by the pics it's not in the way at all.
It could also be put in the center console but it has a wireless charger and I didn't want any Electronic interference or block access to my coffee cup holders.


I ordered and received my Tekonsha Primus IQ brake controller with wiring harness for my 2012 Ford Expedition. To keep from drilling mounting holes for the contoller, I double backed taped it to the top of the center console. In order to hide the wires, I had to strip some of the braided wire loom protective cover away so to be able to push the wires through the gap between the dash and console. The installation came out very clean and access to the controller couldnt be better.
Hooked up the trailer and took it for a drive. Within a few "stops" I had the brake system dialed in.Working perfectly.


Primus Iq Brake Controller installed in a Mercedes Benz 2017 Sprinter.
The van's electronics interface with the Primus, and it can detect when the trailer brakes lock-up, which lights an dashboard indicator lamp. I used the Mercedes-specific plugs under the driver's seat and ran the cables through the battery box to the dashboard.


very pleased with itself. the primus iq controller works very well, however i was expecting a few more inches of wire on the plug. had to install it where i did not want to, as was not willing to make 4 more splices to extend it.
it's a lot easier to shorten it than to extend it.

Show More Reviews

See what our Experts say about this Tekonsha Trailer Brake Controller

  • How Does The Tekonsha Primus IQ TK90160 Get Installed In A 2007 Chevy Suburban W/ Tow Package?
    On your 2007 Chevrolet Suburban there is not trailer brake controller port to plug in a trailer brake controller like on newer vehicles, and instead GM ran the wires needed to connect to the controller and just left them underneath the dash. Above the emergency brake pedal there will be four wires, a red/black wire, a white wire, a light blue/white wire, and a dark blue wire. To install the Tekonsha Primus IQ # TK90160 you were wanting you will need to make the following connections: Red/black...
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  • Adjusting Tekonsha Primus TK90160 Brake Controller That's Making Trailer Brakes Lock Up
    The first thing you'll want to do is make sure the controller is installed so that it is in the proper operating orientation. The controller needs to be pointed parallel to the direction of travel, on a level plane side to side. On a front to back axis, it needs to be between level and 70 degrees above level, as shown in the diagram I've provided. Secondly, make sure the controller's been properly adjusted. Just to the left of the LED display, is the wheel that controls how much voltage...
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    Image 1 for Image 2 for
  • How to Find the Correct Stop Light Switch Wire on a 2017 Ford Transit T-250
    The stop light switch wire that you will need to connect the red wire to on your brake controller is a purple/white wire located in the # 4 pin. You can see the process shown in the attached video on a 2016 Ford Transit T-250 which will be the same as your 2017 Ford Transit T-250.
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  • Intermittent Error Code of Tekonsha Primus IQ Brake Controller
    What you are most likely seeing is an intermittent connection issue due to dirt or corrosion on the pins of your trailer wiring. Try taking sandpaper to clean all the pins of the connectors and that should fix the problem.
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  • Installation Of Brake Controller On 2009 Cadillac Escalade Platinum
    There is no brake controller plug-in port on your 2009 Escalade but the wiring is present under your dash to the left of the brake pedal. I have attached a link to an installation video of a brake controller on a 2009 Escalade you can check out. Just go to about the 1:40 mark on the video and it shows where the wiring can be found and how to complete the brake controller installation. The wiring harness is about 4 inches behind the onboard diagnostic port. There will be a piece of white...
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  • Can Tekonsha Primus IQ Brake Controller be Unplugged and Still Function
    Yes, you can disable or unplug the Tekonsha Primus IQ part # TK90160 in any way that you like and your truck will still function fine. If you unplugged the controller the harness has all of it's circuits separated and insulated well enough that there wouldn't be an risk of a short between them.
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  • Why Does Light of Tekonsha Primus Brake Controller Stay On
    The indicator of a brake controller will stay on for several minutes after the vehicle has been turned off and exited. If you leave the vehicle undisturbed the controller will go into sleep mode and the light should go off. However, even if it did the amperage draw of the LED light is so miniscule that it would take months to drain a vehicle battery. Which by then the battery would be dead from inactivity.
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  • Primus IQ Brake Controller Installation in 2013 Chevy Silverado
    The Tekonsha Primus Trailer Brake Controller # TK90160 will be a hard-wired installation in your 2013 Chevrolet Silverado since there is no connection port under the dash. The needed wires are already run for you. Below the steering column, there is a bundle of wires tied together with white tape, located left of the brake pedal. This bundle of wires is the tow package for the brake controller. Carefully cut the white tape binding the wires, and pull the wires down from underneath the...
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  • How Does Brake Controller Install in 2007 Chevy Avalanche
    Your Tekonsha Primus IQ part # TK90160 can install in your 2007 Chevy Avalanche pretty easily but there isn't a connector under the dash for installing the controller. You will connect the brake controller wiring with the vehicle wiring already present under the dash. If you check out the link I attached you will see a guide for installing a controller in a truck just like yours.
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  • Troubleshooting a Tekonsha Primus Brake Controller # TK90160 That has Power But Does not Work
    Are there any error codes popping up with your controller now that it seems to no longer be working? If not, it almost sounds like your trailer connector is not making good contact anymore and its not able to send brake voltage to your trailer. Unless somehow the power knob got turned all the way down it should function just like it did as long as everything is hooked up correctly. I also attached an FAQ article and video on troubleshooting brake controllers that you might find informative...
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  • Is Tekonsha Primus IQ Only Good For Use with Heavier Trailers
    The Tekonsha Primus IQ part # TK90160 does not have the requirement that you mentioned. It can easily be used on lighter trailers and heavier trailers. It has a sensitivity adjustment which allows you to tailor how aggressive the inertia sensor works to apply the trailer brakes so heavier or lighter will actuate the brakes really well.
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  • What is the Difference Between the Original Primus and the Primus IQ Brake Controllers
    There is only one Primus brake controller. There was a previous generation, this is true, 39515, discontinued in April 2010. The Primus IQ, # TK90160, has the same internal parts as the original Prodigy, 90185. Both Primus controllers use an accelerometer to detect deceleration. The newest one, the IQ, has a boost feature and works proportionally in reverse. The boost feature increases the initial amount of braking power and has 3 levels depending on the weight of the trailer being towed....
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  • Troubleshooting Tekonsha Primus IQ Brake Controller Displaying "r" Code
    The "r" that you mentioned seeing on the display for your Tekonsha Primus IQ Trailer Brake Controller # TK90160 indicates that the unit is in reverse mode. The only way to go into reverse mode on this brake controller is to hold the boost button in for 5 seconds. It's very possible that the boost button on your controller is simply stuck, which has been known to happen. The button may have become partially wedged under the outer casing of the controller. Check the boost button and if...
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  • Tekonsha Primus IQ Displaying Only A Single Dot When Trailer Is Not Connected
    The single dot should show on your Tekonsha Pimus IQ # TK90160, when the brake controller has power with no trailer connected and the boost off. N.C. should show for 15 seconds and then change to what you are seeing. You may want to connect your trailer and see if it will show .c again. and make sure it is still working. My contact at Cequent suggested that the boost button may not be on any longer and if you hit that, there should be a second dot on the right. If you have further...
    view full answer...
  • What Do Flashing Codes Mean on Primus IQ Trailer Brake Controller TK90160
    The Primus IQ trailer brake controller # TK90160 has a display that will blink with different codes to indicate the controller's connection status to your vehicle and to your trailer. The troubleshooting chart taken from the linked instructions shows these various codes and what they mean. For instance, if the display shows "n.c." this means that the controller has sensed that it does not have a connection to the brake circuit on the trailer. This can be due to the trailer being disconnected,...
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  • How Does Tekonsha Primus IQ Brake Controller Install on 2013 GMC Sierra 1500
    The install of the Tekonsha Primus IQ part # TK90160 that you referenced does not require a custom install harness as your truck does not have a plug under the dash and instead has blunt cut wires that you'd just have to wire directly to the controller. Check out the install video link I attached to this page that shows how a similar Tekonsha brake controller installs on a similar GMC Sierra as yours.
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  • Troubleshooting Brake Controller That's Actuating Brakes When Unplugged
    You're saying that you still have trailer brakes even though the controller's been unplugged? If that's the case, then there is a short in the trailer connector on the vehicle or on the trailer that's allowing power to bleed over from a different circuit to provide power to the trailer brakes. If the short isn't located in the connectors, it's likely on the trailer. Closely examine the connector on the vehicle and on the trailer. If you see any green or white corrosion on either connector,...
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  • Installing Tekonsha Primus IQ Trailer Brake Controller on 2003 Chevy TrailBlazer with Factory 7-Way
    If your 2003 Chevy Trailblazer came equipped with the factory 7-Way connector at the rear, there is not a plug present under the dash that would work with a plug-in adapter, however all the needed wires are already run. This means that in order to install a brake controller like the excellent Tekonsha Primus IQ # TK90160 that you mentioned, you will just need to connect the brake controller wiring to the vehicle wiring that is found under the dash. This isn't quite a "plug and play" installation,...
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  • Adjusting The Tekonsha Primus Brake Controller
    The Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional # TK90160 has a dial on the left to adjust the brake settings when the boost settings are turned off. The boost settings are selected with the blue button. I've attached the installation details that walk you through the initial setup as well as the function and also have a video to assist.
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  • O.L. Error Code Occasionally on Tekonsha Primus IQ Brake Controller
    The OVERLOAD error message you are experiencing is caused by a high current draw from the brake circuit. In other words, there is a short somewhere in your brake output circuit. Typically the problem can be found at the trailer connector, on the brake output circuit on the trailer, or at the wiring connection at the brake magnets if a trailer was connected. Start by examining the trailer connector on the trailer and the vehicle. Make sure that there is no damage or corrosion and that the...
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  • Troubleshooting Tekonsha Primus IQ TK90160 Having N.C Code When Connected To New Travel Trailer
    The n.c code you are getting on your Tekonsha Primus IQ Trailer Brake Controller # TK90160 means that it is not detecting that a trailer is connected. This error code has a few different causes but all are related to the trailer side of the equation, with the exception of your 7-way connector having corrosion or debris causing it to not make a solid connection. I recommend starting with checking the 7-way connector on your 2016 Chevrolet Colorado for corrosion or debris first as it is...
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  • Where is Best Place to Ground Brake Controller
    The best place to ground a brake controller will be back to the negative post of the vehicle battery. I attached a picture that has a diagram of how brake controllers install.
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  • What Does NC Message Codes Indicate on Tekonsha PRIMUS Trailer Brake Controller
    On the Tekonsha PRIMUS Brake Controller, # TK90160, a message that reads nc means no trailer is connected. It should show nc when the manual override is pressed and no trailer is connected. The single dot indicates that the boost feature is not on. Two dots means that the boost feature is on. I have included a link to the installation details for the brake controller that includes a chart of the various codes the PRIMUS can display.
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  • Meaning of .C. Display on Tekonsha Primus Brake Controller
    The .C. you're seeing on the display of your Tekonsha # TK90160 Primus Brake Controller indicates that there's a trailer connected and that the boost feature is turned on. To turn off the boost setting, press the boost button located above the LED display a few time until the decimal point after the C goes disappears. If your trailer isn't plugged in, and you're seeing that display the most likely culprit is a dirty or corroded trailer connector on the vehicle side.
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