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Most controllers hang under the dash where they bump your knee or clash with newer interiors. This unit mounts fully out of sight beneath the dash so nothing sticks out. The main box measures just 3-3/8" long x 3" wide x 7/8" thick and uses an adhesive pad or zip ties to secure it anywhere. Once mounted, you control everything from your phone—no extra knobs or screens on the console.
No buttons or modules to reach for—just open the OneControl app on your Apple (5.0 and newer) or Android (4.3 and newer) device. Through Bluetooth, you set max braking output, adjust sensitivity, and even hit manual override right on the screen. The app displays a ring showing how much brake power is applied and lets you save multiple trailer profiles so your settings are ready the next time you hook up. If Bluetooth drops out, the controller keeps working with your most recent settings, so you’re never without braking.
Jerky stops disappear thanks to true proportional braking. A built-in 3-axis accelerometer senses how fast you’re slowing down and sends matching power to the trailer brakes. It works automatically at any mounting angle and supports trailers with 1 to 4 axles (8 brake assemblies), with electric trailer brakes. The result is smoother, balanced braking that protects tires and pads on both rigs.
Setup takes just a few steps with the included custom-fit harness—plug one end into your factory tow port, the other into the Echo unit, and you’re connected. No cutting or hardwiring required. LED indicators on the box show status for pairing and troubleshooting, while built-in reverse polarity and short-circuit protection keep the system safe. Calibration happens automatically once it’s plugged in and paired, getting you towing in minutes.
If you pull different trailers or share towing duties, you can store multiple brake profiles in the app. Each saves its own max output and sensitivity settings so switching setups takes only a quick swipe on your phone. It’s ideal for anyone managing more than one trailer—set it once, save it, and tow with confidence every time.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
Installed the controller under the dash out of the way. Downloading and setting up the app was easy. I have set a profile for my trailer loaded and empty. This is a nice feature.
The app stays open while driving, so the manual brake button is visible, and easy to access, if needed.
GOT MY CURT BRAKE CONTROLLER WITH EASY CONNECT FOR MY JEEP GRAND CHEROKEE ,EASIEST AUTO PART I HAVE EVER HAD TO INSTALL.BUT MY VEHICLE WAS SET UP WITH THE TOW PACKAGE..
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.
Don’t even know it’s there, set it and forget it.
Perfect fit for my 2016 Jeep Grand Cherokee. 5 minute installation.
Definitely a must for installing the Curt Echo under-dash brake controller in a Jeep Grand Cherokee. No wire splicing required; plug-n-play!
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.
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.
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. $[XX] later and this controller removed, I've not had any problems with the battery
Worked perfectly to connect our Curt Brake Controller to our Jeep Grand Cherokee's wiring harness. Nothing to cut or trim.
This brake controller has to be unplugged when not in use or it drains the battery in a few days. I had to have a electrical test done in my vehicle ($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.
All great products and fast shipping. I had a small problem and tech support answered my question immediately. Saved over $250 dollars over dealer prices and with instruction videos installation was a snap. etrailers has become my go to for hitches and accessories.
Thanks, You Guys are the greatest.
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.
Great customer support on the front end to make sure I got the right part. Great support on the back end to make sure I was satisfied. Even to the extent that now one year later, I am on a tick file to make sure my experience continues to be great! It sure has been great and I look forward to more advice and purchases from E Trailer.
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.
etrailer has great videos for installation and information which works well for your personal application. Cable hidden under dash.
Bill A.
4/7/2021
Still like it.
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.
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!
Easy setup. So far working as intended.
I purchased this harness primarily to get the plug for my 2023 Grand Cherokee L Overland (with tow package). I had an Odessey brake controller with a cord for a Ford truck. The black fitting on this cord is identical to the plug coming from my brake control (both male plugs) so some splicing is required to utilize my old controller. I had difficulty locating the plug in my Jeep and could not locate photos or video of the plug location in the WL platform (current model Grand Cherokee). I have attached photos of where to locate the plug. It was a bit more forward and wrapped up with black electrical tape as shown in my photo.
If the black plug matches your brake controller, this should work perfectly for you.
Tom
6/27/2025
It still works as it should.
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Victor
4/2/2019
Traded the 2016 Grand Cherokee for a 2018, brake controller and wiring adapter fit perfectly again and has been performing flawlessly.