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  1. Trailer Brake Controller
  2. CURT
  3. Proportional Controller
  4. Up to 2 Axles
  5. Hidden
  6. Smartphone Display
Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional

Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional

Our Price: $289.95
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Trailer Brake Controller

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Bluetooth-enabled brake controller lets you monitor and control your towing directly from your phone. Create multiple trailer profiles and tweak your settings in the app. One step, plug-and-play installation into your 7-way. Great Prices for the best trailer brake controller from CURT. Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional part number C51180 can be ordered online at or call 1-800-940-8924 for expert service.
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CURT Trailer Brake Controller

  • Proportional Controller
  • Up to 2 Axles
  • CURT
  • Hidden
  • Smartphone Display

Bluetooth-enabled brake controller lets you monitor and control your towing directly from your phone. Create multiple trailer profiles and tweak your settings in the app. One step, plug-and-play installation into your 7-way.


  • Activate your trailer brakes in proportion to your vehicle's braking
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
  • Control and monitor your towing from your smartphone with the OneControl app
    • Adjust sensitivity and max power output
    • Press the manual override button in the app to control trailer sway or stop in an emergency
  • Transfer between vehicles easily - great for mix and matching your fleet of trucks and trailers
    • 1-Step set up: plug in and go
    • Quickly switch between settings for different vehicles and trailers, saved as a profile in the app
  • Troubleshoot any problems with the LED lights on the plug-in unit
  • Enjoy convenient towing for years to come with a long-lasting system
    • Weather-resistant with internal components sealed off from moisture
    • Compatible with ABS brakes, cruise control, low-voltage wiring, multiplex wiring, and PWM systems
    • Built-in reverse polarity and short circuit protection
  • Install in 1 plug-and-play step - no tools, no splicing, no wiring
    • Plug unit in between your 7-way trailer connection
    • Included strap helps secure the unit in place
  • Includes plug-in unit, instructions, and quick reference guide
    • Bluetooth PIN for initial pairing to your smart device located in quick reference guide
  • Pair with other OneControl systems for convenient control of your trailer in one app
    • True Course (C94VV - sold separately) prevents sway
    • Tire Linc (C54VV - sold separately) monitors your tire pressure and temperature
  • Assembled in the USA


  • Application: trailers with up to 2 axles (4 brake assemblies)
    • Compatible with electric or electric-over-hydraulic trailer brakes
  • Plug-in unit dimensions:
    • Length: 6-5/8"
    • Vehicle-side width: 1-5/8"
    • Trailer-side width: 2-7/8"
  • Smart device OS requirements:
    • Apple: 5.0 and newer
    • Android: 4.3 and newer
  • Limited lifetime warranty

Note: If Bluetooth connection is lost, the brake controller will continue to function safely, using the most recently programmed settings. This brake controller is not compatible, but will not interfere, with Apple CarPlay or Android Auto.

One-Step Installation

The Curt Echo is unique for its plug-and-play installation. With no wiring, modules, or knobs to install, setting up the Echo is a breeze.

Curt Echo Wireless Brake Controller Installation

The main unit plugs into the 7-way at the rear of your vehicle and provides a port for plugging in your 7-way trailer connector. Use the included strap, found inside the cap, to secure the Echo in place. It will help ensure a constant connection between vehicle and trailer.

That done, download the OneControl app on your Apple or Android smartphone and wirelessly pair the unit to your phone via Bluetooth, following the in-app instructions. It should take about 5 seconds for them to pair. Once paired, the LED light on the unit will turn a solid blue. Plug in your trailer's 7-way and let the whole system calibrate for another 5 seconds. When the LED turns green, configure your desired trailer brake settings in the app and save it as a profile. Then you're ready to tow!

Note: See's exclusive 7-way upgrade kit for brake controller installation (ETBC7L - sold separately) if you don't already have a 7-way plug at the back of your vehicle.

Control Your Towing with Your Smartphone and an App

Besides the crazy-easy installation, the Echo is unique for giving you control of your towing through your smartphone. You can set the maximum braking output, adjust the braking sensitivity, apply the manual override - all from the OneControl app.

Completely wireless, the Echo connects to the app via Bluetooth. You can save multiple towing profiles in the app, a big plus if you have a fleet and want to be able to just select a pre-set configuration and get towing. And don't worry; after you've downloaded the app, you don't need to have data on to use the app with the brake controller. You'll be able to receive calls and texts and access your other apps.

User-Friendly OneControl App

Simple, intuitive, and user-friendly, the OneControl App makes it wicked easy to manage your settings and control your trailer.

how does the One Control app work

1. Manual Override

This big orange button in the middle of the app is your manual override. Press and hold the button, and the brake controller will smoothly apply the trailer brakes without applying your vehicle's brakes. This is perfect for stopping sway or controlling your trailer's momentum in an emergency.

Curt Echo App Manual Override Button

Quick tip: Put manual override right at your fingertips by adding this button (C83HR - sold separately) to your dash. The app must be running for the button to work, but it can be in the background while you use other apps on your phone. The button has an adhesive pad for a quick-stick installation and includes an easily replaceable battery.

2. Brake Output Indicator

The outer ring gives you a visual indicator of how much power is being applied to the trailer brakes. This is determined by your max output setting.

3. Max Output

Braking output is the maximum amount of power that will be applied to your trailer's brakes. How much braking output you need is determined by the weight of your trailer; a heavier trailer will need more power to bring it to a stop.

To set your maximum braking output, tap this button and increase or decrease using the + and - buttons. You want to set the braking output as high as you can without locking up the brakes. Once you've set up the brake controller the first time, you shouldn't need to adjust the settings until the trailer load changes, you switch trailers, or road conditions change.

4. Sensitivity Level

This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the max output level. This is a great adjustment to make when you're towing a heavy load and the trailer will need more umph to bring it to a stop so it doesn't push your vehicle forward.

Just like max output, if you need to change your sensitivity level, use the + and - buttons. If your vehicle takes too long to come to a stop, increase the setting. If it stops too abruptly, lower the setting. You may also need to adjust the sensitivity based on your own preferences, or when the trailer load or road conditions change.

5. Vehicle Hazard Lights

If you turn on your vehicle's hazard lights, there's a chance the trailer brakes will pulse on and off as the lights flash. Turn this setting on any time you activate your hazard lights to prevent this problem.

Save Multiple Trailer Profiles

Curt Echo App saves multiple trailer profiles

Get on the road faster by saving your settings. With the app, you can add and store multiple profiles for both trailers and vehicles so that your preferred settings will be ready to go as soon as you hook up. This is perfect if you own a fleet and don't want to have to reset the controller every time you swap out trucks, trailers, or drivers. You'll have the ideal settings saved and waiting for you. To switch between profiles, just swipe left or right.

OneControl: One-Stop App for Towing

If you like the idea of monitoring your trailer from your phone, the other OneControl systems could be a great fit for you.

The Curt True Course (C94VV - sold separately) is an advanced Bluetooth sway control system that automatically triggers the trailer brakes (independent of the vehicle's brakes and the brake controller) when it detects dangerous trailer movement. The Curt Tire Linc (C54VV - sold separately) Bluetooth TPMS monitors the temperature and pressure of your trailer tires. All of these systems use the OneControl app so you can manage all of them in the same place on your phone.

LED Status Indicator

troubleshooting Echo brake controller

The LED indicator light on the top of the plug-in module will show you when the brake controller is connected. You can also check the LED for simple diagnostics when you need to troubleshoot.

Weatherproof Construction

Is the Curt Echo weatherproof

Because the Echo mounts outside the vehicle, it's designed for maximum weather resistance. The unit is filled with an epoxy resin that seals off the internal components from moisture and the elements. The Echo also has a soft locking tab for connecting to your 7-way plug that reduces vibration and helps ensure a constant connection.

Proportional Braking

What is proportional Braking

The Curt Echo 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 Echo uses an internal 3-axis accelerometer to sense 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 ensure that your trailer slows at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.

51180 Curt Echo Wireless Trailer Brake Controller - Smart Phone Bluetooth Connection - One Control App for Brake Controller - 1 to 2 Axles - Proportional

Item # C51180

Installation Details C51180 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional - C51180

Average Customer Rating:  4.5 out of 5 stars   (1461 Customer Reviews)

Bluetooth-enabled brake controller lets you monitor and control your towing directly from your phone. Create multiple trailer profiles and tweak your settings in the app. One step, plug-and-play installation into your 7-way.


I like the fact that I have a proportional brake controller I can stick in my glove box. It doesn’t have to be hardwired to the vehicle which is nice because I can use it on different applications. This one is definitely a plus over time delay brake controllers.



After an initial issue and replacement, the product has worked very well. Having an adjustable proportional controller that you can throw in your glove box is pretty handy. It’s response time is very quick.

2014 Dodge Ram Pickup

The factory brake controller on our 2014 Ram 3500 would never give us good braking for our 5th wheel. The best voltage that the controller would provide to the electric brakes was just under 10 volts; and that was at full settings. Dealer said that this year vehicle never would give more voltage.

This etrailer brake controller was not only easy to set up, it does a fantastic job stopping our trailer.

Finally peace of mind towing.

James B.


Still works great. Nice to have confidence in the ability to stop as necessary in any circumstances.


We have been using the Echo wireless brake controller for about a year with our little travel trailer. In general it works well, no problems with the installation or connection to our phones. There is a little rubber strap that supposedly keeps it attached to the vehicle, but it is pretty useless. We keep a bunch of 1cm wide zip ties in the car in order to secure the unit to our car.



The echo wireless works well. It is easy to setup for different trailers or road conditions. The new software update improves connectivity. The little safety strap that it came with is long gone, and it was useless to begin with. I just keep a bag of zip ties in the car to secure the echo to the cars seven pin connector.

Etrailer Expert

Mike L.


@Mark That's a nice solution!


Received my Curt Echo wireless brake controller promptly, with thanks to the etrailer folks for excellent service. App download, install, and setup was simple and straightforward. The unit paired seamlessly with my BMW X5 factory 7-prong connection, with no need for an extra power line. Once plugged in and the app synced, the unit calibration was easy, and the manual brake function button worked fine. Basically, the unit worked just as needed.
Only tiny issue which came up was that after several days on the road, the small post on the rubber strap which stretches around the unit to secure it broke off, rendering the rubber strap useless. A simple velcro strap will serve the same purpose, no worries. (That’s why only 4 stars.)
All in all, a great product.


Electronics work perfectly, but finding it difficult to keep the trailer cable attached to the controller. I also don’t trust the unit to stay connected to my car plug using the rubber strap provided with the brake controller. It’s too stretchy it seems, becoming unhooked easily. Overall very happy that this product was invented and works as advertised. Improve the ability to securely connect the unit to the car and trailer cable to the unit, I would give 5 stars.

Toyota Echo

I have owned the Curt Echo WBC for one year now and have been impressed with the versatility of the product. I use it with multiple trailers and vehicles. My only ding is making sure to provide support for the contoller as it is heavy for the plug in and I'm always concened that it will vibrate out. So far, that has not occured.


Works perfect with Jeep Wrangler and Rp od!



Still doing great and have recommended to friends .

Etrailer Expert

Mike L.


@Tommie That's outstanding, thanks for the recommendations. We really appreciate that!


This controller has worked flawless for me. I’ve used it on a 2009 Lexus RX350, 2022 Lexus RX350, and 2022 Lexus GX460. Never an issue connecting or operating. My father, on the other hand, has the exact controller for use with his 2018 Ford F-150, and has had many issues with connection and operation. I love it’s modularity and simplicity.



Still using this controller frequently, even though my GX has a pigtail for a wired controller. This is just so simple and quick to plug in when I need it, and take out when I don’t. Zero flaws, zero hiccups, zero issues.


Customer service response is prompt. Order arrived quickly. I’ve attached, synced, and tested the controller on my 2020 Tacoma, pulling my 16ft travel trailer. Lights and app indicate it is working. I’m still testing adjustments, as I’ve never used a brake controller. I saw some reviews that complained about brake pulsing at low speeds. I have NOT experienced this problem. Manual actuation works well at low speed. Information says app must run in the foreground. I’m trying to determine what that means. Can I open the app and switch to another app, or does the app need to stay on constant display?

Etrailer Expert

Brooke M.


Yes! The app should be the one on constant display on your phone screen; the one you are viewing. It looks like the reason is if its running in the background, if you have a different app on display while towing, it can cause delays in breaking times. Best to be safe and just run the OneControl Auto app when towing.

2015 Chevrolet Colorado

Overall, I like the way the unit operates, with the Bluetooth portability. It’s easy to move from vehicle to vehicle. I also know it works, as I encountered a hard braking incident in traffic, and everything responded as hoped.

The build quality suffers, as the little rubber strap and hook to “fasten” it with quickly broke. I replaced it with a stainless nut and bolt, and hook it around the fold down cap to keep it in place. Otherwise, I’d rate it a higher!


Had it working within minutes of taking out of the box. Controller works well. it remembers the last setting which is helpful. I was able to set up an profile for driving the highway and a separate profile for when I am backing up (don't need as much brake).

Glad the unit had strap, although it is a little difficult to secure and does need to be checked.



3.5 great years. No issues. Then Yesterday I was forced to move to a new app to communicate with the controller. This is NOT cool. New app was difficult to connect. Then I find out I must have location services turned on for it to work. This is an invasion of my privacy just for me to control my trailer safely. App has to be running and in the foreground - what on earth???? I want to be able to use my phone, run maps etc. Basically the ability to use my controller as I intended when I spent my money has been taken from me. I feel robbed.

Toyota Echo

It’s a very nice product. I drive a 2022 MB gls450. If I recall correctly, the car didn’t provide power to the Echo for setting the Bluetooth pairing. I used a short Curt cable to “fool “ the car. It would have been nice if this would have been built in to the Echo

Chevrolet Tahoe

A great controller. It was simple to setup and use. I love the ability to use it in different vehicles ---- and no wiring hassle. Plug and play, make a couple adjustments and it worked like promised. I have showed it to several friends, who were totally amazed, had no idea there was a product like it out there. Towing a 18ft enclosed trailer with a Tahoe presently.


I love the ease of use and simplicity of it, however.
I use it on my pusher MH and it will not keep connectivity. I think it's because of the distance and obstacles.

I would highly recommend this product for a pick up application.


Brake controller works well, but I would like to see a more substantial connection to the power socket on the car. Velcor is provided, but I would prefer something that ties to the car's frame. The way it is, I feel like the controller could fall off on a rough road.


The Echo is a convenient trailer brake. It's easy to set up and use every time I hook up my trailer. I use Bluetooth from an old smartphone mounted to the left of of my steering wheel so I can keep my cell phone free.

The only problem is that the rubber strap kept getting un latched from the rubber pin. So I just use two bungee-balls to keep the ECHO connected to the car harness and the trailer plug. (see Photo)

2019 Honda Ridgeline

The Curt Wireless brake controller installed easily on my 2019 Honda Ridgeline for towing my 24' travel trailer. It worked well on the one occasion that I had to use it. Nice to have the visual in the app on how the brakes were being applied.


Works amazingly well after the brief learning curve. You just can’t over think the process and do it. What a difference not having to install a brake controller on a new vehicle. I would buy it again.


So far it's doing exactly as it was designed to do. Only issue is that stupid rubber strap. It has a button on it and as I was trying to loop this thing over the plug door, it flew off. Why would you make one removable? In any case, I put a zip tie around it. I was lucky to find the button on the ground and tried it again only for it to fly of once again. I like the controller how it works and it's simplicity

2019 Chevrolet Traverse

Great product! I use it with our 2019 Chevrolet Traverse to tow our RZR/Trailer. Once set up works flawlessly. One critic....its a little expensive.


Got delivered in a timely manner was in great condition. Just activated it this morning. Followed instructions ran into trouble when connecting to it with the app. It needs to be connected to your trailer as well to activate it so it can be located when searching for it. Setting it up was ok after that. I hooked it up and moved around some while using breaks on truck. Used the direct break on phone to see if it would stop, it did. Will use it sometime after I figure out the truck towing settings, sensors.


This product has been excellent. The connectivity is immediate, even without opening the app. My bluetooth button has always worked simply. The colored lights are simple and communicative. I love the ease and lack of setup.

On the flap, the corner of the thumb tab has broken off. Seems within regular wear and tear for towing.

2021 Ram 1500

Took a little patience but it paired. Added a little wd40 to trailer 7way...and everything works! The baseline setup was perfect for my single axle travel trailer.


Initially wouldn’t connect to iPhone but after uninstall/reinstall of app it was fine. After literally traveling around the entire US I have to say it was a blessing with plug-and-play simplicity and total control over braking parameters. The phone lost Bluetooth connection a few times while traveling but the controller maintains the program so no big deal. For me it was nice to see the braking rate on the phone graphic. GREAT PRODUCT! 5 stars!


As long as you follow the directions for hooking it up precisely, it works marvelously. Especially, if like us, no OEM brake controller was available for our Jeep Grand Cherokee.

I give it a low rating, however, because it is made very cheaply. Just from regular use (plugging it in and unplugging it), the unit cracked, and then after 1-2 more uses it completely fell apart. See the pictures.

Etrailer Expert

Jenny N.


I wanted to let you know that the controller does have a 1 year warranty and I have sent the warranty return instructions in a separate email to you.

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  • Recommended Brake Controller For A Camper That Will Be Rented Out
    If your 2008 Subaru Outback Wagon didn't already have the 4 Flat, then I recommend going with the Tekonsha T-One Vehicle Wiring Harness # 118461. In my experience I have found these to be longer lived products. It is a little more expensive, but it is the one I would go with. Once that's on, I recommend going with the # ETBC7L. This will only need the power wire run and will let you use a brake controller that will not be wired into the cab of your Outback. With what you are wanting to...
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  • Everything Needed to Tow a Trailer with a 2017 Lexus RX 450h
    For just the electrical side of things for your 2017 Lexus RX 450h we have the Tekonsha T-One # 118252 as long as you have the factory tow package. This gives you a 4-Way for the basic trailer light functions. One you have installed the T-One harness the next step is to install a 7-Way. For this we have the Upgraded Wiring Kit # ETBC7L. This includes everything that you need for a fully functioning 7-Way and a brake controller. Since the wiring on your RX 450h is a bit more complex than...
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  • Curt C51180 Echo Wireless Brake Controller Drains Vehicle and Trailer Battery
    I spoke with the folks at Curt regarding the issue you're experiencing. The vehicle battery wouldn't drain unless there's a power draw or a short in the wiring somewhere on the trailer. In order for both the vehicle and trailer batteries to go completely dead, there's got to be a dead short somewhere. I'd recommend revisiting how the batteries are wired on the trailer. The 12V accessory circuit from the trailer should tie in to the positive trailer battery terminal, and the negative trailer...
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  • Recommended Brake Controller for 2016 BMW X5
    It sounds like you already have a 7 way connector installed on the back of your 2016 BMW X5, so you've already got everything you need to use a brake controller-except the unit itself. I recommend using the Curt Echo Mobile Brake Controller # C51180 since it will easily install by plugging into your 7 way connector and provide you with proportional braking for your trailer. This unit is controlled by your Bluetooth enabled smart phone that requires either iOS 8.0 or newer, or Android 4.4...
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  • Will an Old Tekonsha Prodigy RF Interfere with a Curt Echo
    The Curt Echo Wireless Trailer Brake Controller - 1 to 2 Axles - Proportional # C51180 does not require any wiring and will not experience interference from RF since it uses Bluetooth technology. The brake controller plugs in line with your 7-way trailer connection and is operated using your smartphone. As for your old Tekonsha Prodigy RF, I would recommend removing it so you don't have to figure out how to secure the unused 8 foot 7-way cable. It is attached with 4 screws so it should...
    view full answer...

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Used Picture for Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional

Condition: Like New

Notes: May have damaged packaging or minor cosmetic blemishes.

Our Price: $183.95
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