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No big box sticking out to bang your knee. The Curt Echo Under-Dash Bluetooth Brake Controller tucks the main unit out of sight beneath the dash, measuring just 3-3/8" long x 3" wide x 7/8" thick. It stays secure with included adhesive and zip ties, leaving your interior uncluttered and modern. You control everything from your phone while enjoying a clean factory look.

Everything you need for trailer braking is right in your hand. Through the OneControl app, you can adjust max output, set braking sensitivity, and apply manual override—all via Bluetooth. A bright brake output ring shows how much power is applied, and settings stay stored even if Bluetooth disconnects. The app runs on Apple 5.0 and newer or Android 4.3 and newer devices. Save multiple trailer profiles so you’re ready to go no matter which trailer you hook up.

The built-in 3-axis accelerometer senses how fast your tow vehicle slows and sends matching power to the trailer brakes. Tap the pedal lightly and the trailer eases in; brake hard and it digs in firmly. This proportional setup works with trailers with 1 to 4 axles (8 brake assemblies) using electric trailer brakes. The result is even, confident braking that protects tires, pads, and peace of mind.
Installation takes minutes thanks to the custom-fit adapter that plugs directly into the factory brake control port under the dash. Once connected, pairing the Echo to your phone via Bluetooth takes about five seconds. An LED on the unit turns blue when paired and green when calibrated, giving you a clear visual cue that you’re ready to tow.
Reverse polarity and short-circuit protection guard both your trailer and wiring system. Diagnostic LEDs on the main unit make troubleshooting straightforward if you ever need it. Once you’ve saved your brake settings in the app, they remain active even if your phone disconnects—so braking stays consistent every mile of the trip.




Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Ratings & Reviews
arrived before I expected. Finding the prewired brake plug on my 2015 tundra was a pain. This wiring adapter made it possible to complete the job.
The Curt Echo is now on my Nissan Armada and works perfectly. It was an easy hookup with the supplied harness and does its job.
Outstanding product is everything we expected from easy to connect and display in the truck. Great to have when necessary too.
Don’t even know it’s there, set it and forget it.
I like this controller mainly for its sleek design and it blends into the dash of my Tacoma. It works right out of the box and I’ve rarely had to adjust the setting manually. It sometimes lights up weird when not in use but works fine. I’d purchase again.
I grabbed this cable to connect my Curt Spectrum brake controller to my 2017 Toyota Tundra tow package cable. Worked great. The Tundra cable was located immediately behind the panel to the right of the steering wheel with the auto LSD button and Tow/Haul button (if equipped). My truck had a blank instead of tow/haul button.
This is the old obsolete model of Curt Echo which has to be installed under the dashboard. The newer version, which attaches to the electrical system in the rear of the vehicle, is superior and now preferred by most trailer owners. The above version should be taken off the catalog.
VERY easy install. As mentioned in other reviews the hardest part is finding the factory plug in for a 2017 Tacoma. Toyota tucked it way in the back behind a wire bundle. Picture attached for reference.
This is my first proportional brake controller. Stopping is much smoother without sacrificing safety. Communication by bluetooth makes for a clean installation.
This controller took me literally 15 minutes to install with the required pigtail and my Rubicon with factory towing package installed. When I initially downloaded the app and connected, it actuated and locked the brakes. I simple deleted the app and reinstalled and everything worked normal.
I picked this Curt brake controller As it is specifically wired for my 2017 Toyota Tacoma which already has the tow package. When I finally found where to hook it up in my truck I realized I needed C51455 part which is the female end .. they gave me another 15 inches of extra wiring so I can mount the controller by my right leg as I drove.. and the great thing about this experience I called on a Sunday afternoon got a hold of A person ( Shawn B) Who was very helpful and knew exactly which part I needed .
I highly recommend using e trailer
As alway, etrailer had exactly what I needed to do the job simply, effectively, and as the best price. What more can you ask for?
Was not aware this device draws on the battery constantly. I don't daily drive my truck and have had to replace the battery twice in one month due to being drained below the point where they could be recharged. $[XX] later and this controller removed, I've not had any problems with the battery
This brake controller has to be unplugged when not in use or it drains the battery in a few days. I had to have a electrical test done in my vehicle ($XXX). The etrailer tech said the test was done incorrectly. The Chevy dealer claims it was accurate. I’m left with a problem.
Needed a brake controller I could rely on because I was pulling my camper to a site at the top of a 25% grade within a few days. Unit plugged right into the harness for the factory brake controller (with the adapter cable) on my 2014 Ford F-150,and worked perfectly. Bluetooth connectivity works through the app (rather than through the phone's "settings" icon),and connects instantly. I'm very pleased with this product.
As first time truck and pop-up trailer users, we initially purchased a cheaper brake controller that required drilling the dash. This is a new truck, so we decided to switch and spend more for the Bluetooth. etrailer was easy to work with for a return, and the Bluetooth brake controller is fantastic - so easy to use with our new trailer!
I really wanted a trailer brake controller that I didn’t have to stick an ugly knob/box hanging off my dash. This was my solution and it works perfectly. Plugged right into my Honda Ridgeline existing plug, and easily connected to the app on my phone. Nice setup.
I was looking for a trailer brake controller that did not require a permanent mounting to the dash or center console of my 2020 Jeep Grand Cherokee Trailhawk. I initially considered the wireless bluetooth controller from Curt Echo that plugs directly into the 7-pin outlet next to the tow hitch. However, reviews from individuals that tow RV trailers identified that particular option prevents the 12v battery on the trailer from charging off of the TV while connected. This would limit the RV utilization during long trips involving boondocking.
The Curt Echo under-dash controller seems to solve that problem and uses the same user interface as the Curt Echo.
Easy to install and operate; problem solved!
Easiest install ever !
Plug and play. App is easy understand and use.
My favorite is with the app and on selected active profile you can see the amount of brake amount is being applied to the trailer when the vehicle brakes are applied. I also install the manual override button. FYI: you don’t need the app on your phone open for the controller or the manual override button to work. Also another nice feature of the manual override button is the size about the size of a quarter, uses a CR2032 battery and the battery level is displayed in the app.
The hardest part of the job was finding the pre-installed connector on the Tacoma. It is tucked in behind a wire bundle so you have to know where to look. Once found, simple plug and play.

Pat V.
8/3/2020
Works very well.
This was relatively easy to install under the dash of our 2021 Jeep Grand Cherokee, especially since ours has the factory Trailer Tow Package and therefore an existing pigtail connector ready to connect to the brake controller. The Curt wiring adapter made it super easy to connect the Brake Controller to the vehicle's wiring harness. The controller was easy to calibrate and worked seamlessly while we're towing a rented trailer. We used a dedicated (older) cell phone to operate it while we're towing to avoid any potential interference from other apps rather than using our regular phone on which we receive phone calls texts, etc. This was our first time towing a trailer and this easy-to-use Brake Controller helped make us feel safe and comfortable. Highly recommended.
I bought this connector for my new Toyota Tacoma after moving the Brake Controller from my traded in Jeep. I had hardwired the Jeep, but this was a direct connector and was much, much easier to install. The Curt brake controller and this cable make an excellent combination to control the brakes on my Casita. The only flaw is that Toyota hides the factory end under the upper left side floor-well cover and was hard to find. Not etrailer's fault. Also, I have bought several items from etrailer and the customer service is always superb, as are all of the item descriptions and videos on the products they carry. Great place to get what you need for your vehicle.
I purchased an adapter to go between my brake controller and the factory wiring in my 2015 Tundra (C51455), I have not installed it yet. I will review it when it is installed.

Dave
7/29/2016
The wiring adapter I purchased worked perfect and the install was simple, thanks
Do not buy either the Curt Under-Dash or plug-in Wireless brake controllers until Lippert fixes the phone app. I’ve used both happily with the old ECHO Smart Control app. I could use the remote manual button with the phone app not even running. As one would reasonably expect the button talked to the controller directly via Bluetooth. The new OneControl Auto app must be running and in the foreground to use the manual remote! And the most recent version of ECHO Smart Control is non-functional, it just tells you to install OneControl Auto.
The break controller worked seamlessly. Profiles are easy to set up and it has very reliable Bluetooth connectivity with my phone. Installation was really easy on my Honda Pilot!
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Kevin
9/6/2016
Flawlessly