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Forget about bulky boxes under the dash or tangled wires. The Curt Echo In-Line Bluetooth Brake Controller connects through your 7-way and pairs to your phone using the OneControl app. Once paired, you adjust braking power, sensitivity, and manual override right on your screen. It even saves multiple trailer profiles so you can switch setups fast. If your Bluetooth connection drops, it keeps working with the last settings for safe, consistent braking.
This controller installs right at the rear of your vehicle using USCAR connectors—no splicing or drilling required. The compact box mounts under the bumper with zip ties or adhesive pad and doesn’t clutter up your cabin. A built-in 3-axis accelerometer allows mounting at any angle and automatically senses direction of travel for smooth proportional braking.
With its internal accelerometer, the Echo matches trailer braking to your vehicle’s deceleration—light pressure for gentle stops, firm pressure for quick ones. That proportional response eliminates the push-pull feeling of time-delay controllers and reduces wear on tires and brakes. It works with electric trailer brakes on trailers with 1 to 4 axles (8 brake assemblies).
This unit is built to handle the elements with a waterproof enclosure, reverse polarity and short-circuit protection. It’s compatible with ABS brakes, cruise control, low-voltage wiring, and PWM systems. The base measures 5-1/8" wide with brackets, 4-1/4" wide with plug, and stands 1-7/8" high—small enough to stay out of sight but tough enough to handle years of towing.
The OneControl app ties everything together. Use it to manage this brake controller or pair separately sold add-ons like True Course sway control (C94VV) and Tire Linc TPMS (C54VV). With everything on one screen, you get real-time feedback and a complete view of how your trailer is performing—all from your phone.
Customer Satisfaction Score:
80% were satisfied with this product
20% of customers were not satisfied
Ratings & Reviews
Works great! If you don't like the echo mobile awkwardly sticking out of your plug, this is the sleeker alternative.
A great easy system that works on my Tacoma. Took 20-30 minutes to mount and install. Worth every penny spent.
Fast-N-Easy install. Takes a bit of experimenting to Dial-In the settings, but totally worth it. Well pleased with my purchase. Highly Recommended.
The hardware is excellent and the installation was extremely easy. When it's working, it works great! The original software wasn't that great and was a little flakey. It's been updated to a new app, which seems a lot better now. Still hate that I have to log into an app to tow my trailer tho.
Super easy to install. Use the bluetooth pin on the box. Works great and remembers your settings.
Great item. Great shipping.
Works perfect and easiest installation
Bluetooth connection is great and the app use is easy
Easy install. Works very well.
This product is not compatible with my Ford F-150
Product works great. Easy to control and fine-tune. I received an open box product, though, which was not discounted or mentioned on the product page, and all securing/fastening hardware was missing.
Locks up trailer breaks no matter what you have it set too
I bought this cause I thought it would be something good in my truck. I didn’t have to drill in the dashboard. I was excited for it didn’t use it for quite a while, but I had it when I went to go use. It could never find the seven pin kept saying it was not connected when it was deleted app reinstalled app, same thing and you don’t have any customer service since they switched the owners
I have enjoyed this product for a year now. It was easy to connect and setup. It works as it should. The app can be a bit of a pain but I still give it 5 stars.
This was installed on a 2022 Toyota Tacoma
I use it to brake a Winnebago Hike 100 RV
Installation was very easy and clean.
Operation is also very easy. You need to adjust the maximum output and sensitivity to fit your automobile and trailer.
The b
A good way to verify operation is to try stoping over gravel.
Just a quick update - here's what worked (or will as soon as I get the Volvo factory module programmed):
This writeup is for the Stealth hitch #SH87FRT, installed with the Curt Echo #C79DR
The existing Stealth cable for Volvo SPA chassis (like the 2017+ XC60) is designed for a 'clean install' on non-trailer brake installations.
The Curt Echo model #C51180 _will not work_, since it would cause the 7pin trailer connector to protrude to nearly ground level.
The Curt Echo #C79DR can be used, but requires the supplied Stealth cable to be modified to add USCAR 7 pin connectors connect to the Echo controller.
Using an USCAR extension cable (like this one from online store), cut the cable approximately in half. (NB - I'm sure y'all can supply)
Strip back the ends of all wires on the extension cable, and attach butt splice connectors to the newly stripped leads.
Unwrap the cloth tape from the Stealth supplied cable, approximately 8-10" from the large Volvo plug, and find the loose end of the blue wire.
Cut approx 6" from the blue wire.
Cut all 6 wires remaining in the Stealth cable.
Strip the ends of all 6 wires, plus the blue wire end.
Splice the wires from the MALE extension cable to the Volvo module end of the Stealth cable. Follow the color coding except: a)there is no blue wire coming from the module, so that will remain unused. b)the purple wire will match with the red wire in the extension cable.
Repeat for the Female side of the extension cable. There is now a match for the blue wire, so all 7 pins will be used.
Plug the USCAR connectors into the respective connectors on the Curt Echo controller cable, and connect the cable to the control module.
Attach the control module as per the Echo installation instructions.
Had it for a year and really like its functionality!. Being a first time camper trailer owner I’ve been quite nervous about how the Rik handles on the road and this breaking system seems to function very well with respect to the needs of the camp trailer and my jeep gladiator.
Product was easy to install, plug in play into harness. Works great, but you may lose connection with brake controller sometimes during operation, but settings are saved and brake functions without connectivity. The only draw back from losing connectivity with brake controller is the emergency brake button capability for swaying or unstable trailer. Great product and I would purchase again.
I can see how it's plug & play for vehicles (trucks) normally equipped for towing, but I needed to cut off the ends and splice wire connections to get this to work with my 2023 Subaru Crosstrek. Overall it works well, although you become dependent on your phone and the phone app while driving. There was some hiccup with the official app in early 2024 when Curt transitioned app support to their parent company (Lippert), but I solved my issue with one email to their customer support.
This works well, but if I could go back in time, I probably would have purchased a wired brake controller.
Excellent product. Easy to install. Works wonderful. I completely recommend.
It’s very easy to install and use.
Just installed the curt echo but haven’t been able to test it as I haven’t hooked up a trailer yet. The attached images show that this controller is basically hidden under the bumper and it plus in behind the factory 7pin connector.
I love this trailer brake controller because it’s completely hidden, and integrates like it’s OEM. No bulky controller to mount under the dash. It all works via Bluetooth connection.
Only thing I dislike is the price, which is why I gave it 4 stars. This is about 2X the cost of the nice Tekonsha P3, but the nice thing is it can be easily transferred to another vehicle. I plan to keep this Curt Echo with me even if I sell my vehicle.
Notice, Curt makes two versions of the Echo controller. This is the one you want.
Scott
1/5/2024
A year later I’m very happy with this Bluetooth trailer brake controller. No question this is the only real option for a modern vehicle, as you don’t have to drill holes and mount anything under the dash. It was very easy to setup, and was totally plug and play. Price is very high compared to the previous generation of brake controllers, but it’s worth it. This is the way.
Great trailer brake! Installed myself in under a 45 mins.
Safely stops my loaded 14' utility trailer on wet and dry
roads.
Received my inline echo brake control module, installed fairly quickly took a bit to sync the system though, time will tell if it truly works like advertised installed on my F150
After installing this brake controller and speaking with etrailer and Curt, turns out it doesn't work on my Ford truck. I asked etrailer to please update their description. So maybe it works and maybe it doesn't, but it does not work on my Ford truck.
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.
Lazer S.
9/9/2025
That shouldn't be happening. This usually indicates an electrical or installation issue rather than the sensitivity setting itself. With this also being plug and play, I doubt it is an installation issue, but it does need to be mentioned. Here is a few things I would check: -Test for shorts on the vehicle 7-way and trailer 7-way. -Test each trailer brake for shorts. -Make sure each trailer brake has its own separate ground. -Try the Echo on another trailer to isolate if the issue is trailer or controller related. -Update the Curt Echo app (sometimes firmware updates fix calibration bugs). If all that is good, you may have gotten a defective one. It's rare, but it does happen. If that is the case, let me know.