To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Uneven or jerky braking can make towing stressful. The Curt Echo under-dash controller uses a built-in 3-axis accelerometer to sense how your tow vehicle is slowing down and applies the trailer brakes in exact proportion. That keeps everything smooth and balanced no matter how hard you stop. It works with trailers that have 1 to 4 axles (8 brake assemblies) and supports electric trailer brakes so your setup stays consistent on every trip.
Big brake boxes under the dash get in the way. This one mounts completely out of sight—just 3-3/8" long, 3" wide, and 7/8" thick—so there’s nothing to bump your knees or clutter your interior. The main unit sticks in place with an adhesive pad or zip ties, and the custom harness plugs straight into your factory port. No splicing, no drilling, no bulky hardware hanging down. Once it’s mounted, an LED light confirms when it’s paired and ready.
Instead of reaching for buttons under the dash, you manage everything right from your smartphone through Bluetooth. The OneControl app lets you set maximum brake output, fine-tune sensitivity, hit manual override, and even save multiple trailer profiles. You can swap between setups by swiping left or right—perfect if you tow different rigs. The app runs on Apple 5.0+ or Android 4.3+ and stays connected without needing cellular data once paired.
The Echo’s diagnostic LEDs help you troubleshoot at a glance, while built-in reverse polarity and short-circuit protection keep your wiring safe. If Bluetooth ever disconnects, the controller keeps working with the last settings you programmed so braking performance never skips a beat. It pairs with other OneControl systems like True Course sway control or Tire Linc tire monitoring (each sold separately) for an all-in-one towing setup managed from your phone.
Getting this controller up and running is quick thanks to the custom plug-in adapter harness designed for direct connection to your vehicle’s brake control port. Just mount the box under the dash, plug it in, pair via Bluetooth, and let it self-calibrate. Once the LED turns green, your trailer brakes are synced and ready to go—no special tools or rewiring required.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Customer Satisfaction Score:
83% were satisfied with this product
17% of customers were not satisfied
Ratings & Reviews
I’ve bought several items in the last year from etrailer. The service and duality never disappoint!
Shipping was super quick, showed up two days earlier than expected. Easy to order and the website is easy to use.
The instructions are a little confusing. Curt provided an instruction manual that leads you to believe you need additional components to complete the install. It’s a general instruction book and needs to clarify the diagrams aren’t necessarily accurate when buying specific components.
It was a very simple install. Only problem I had was getting my fat fingers in the right position to install the adapter harness into place. Took maybe 3 minutes though. Web site said it wasn't compatible with my truck, so I called. After a short wait Jesse came on. He was extremely patient as I explained my problem and had me fixed up in just a few minutes. The shipment arrived 2 days early wich is rare these days. Very pleased for sure.
Worked great. Helped me to trace down a wiring issue with my wiring on the truck and then worked perfectly and controlled some of the heavier loads and was easy to use.
Sherry was extremely friendly and very helpful when I had questions about the correct fit for my truck. She got me the information I needed and took my order and the parts shipped the same day. I was amazed at how fast I got my order.
Easy to install once you dig out its connector from under the dash. H Ave the unit completely hidden.
The brake controller video was very helpful. I made my choice, ordered it and received free of confusion. Thanks go to etrailer.
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.
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.
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. $[XX] later and this controller removed, I've not had any problems with the battery
This brake controller has to be unplugged when not in use or it drains the battery in a few days. I had to have a electrical test done in my vehicle ($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!
Fit my 2025 Santa Cruz perfectly
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.
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!
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