Towing? There's an app for that. This brake controller connects to your phone with Bluetooth so all your settings are right in your hand. The plug-and-play unit mounts under your dashboard, out of sight and out of your way. Great Prices for the best trailer brake controller from CURT. Curt Echo Under-Dash Bluetooth Brake Controller w/ Custom Harness - Up to 4 Axles - Proportional part number C57GJ can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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CURT Trailer Brake Controller
- C57GJ
Highlights
Custom Fit for Your Vehicle: Works with your vehicle's existing wiring.
Smooth, controlled stops: Proportional braking syncs trailer and vehicle for even deceleration.
Clean, hidden setup: Under-dash mount keeps the controller out of sight and off your knees.
Simple smartphone control: Bluetooth pairs with the OneControl app to adjust output and sensitivity.
Tow multiple trailers easily: Save and switch between profiles for different trailers in the app.
Quick plug-and-play install: Custom harness connects to factory wiring with no splicing required.
Features to know about
Clears Up Dash Space: Hidden Under-Dash Design
Big brake boxes can clutter the cab, but this one mounts out of sight. The Echo’s main unit tucks neatly under the dash—just 3-3/8" long x 3" wide x 7/8" thick—keeping your interior clean and knee room open. It uses a plug-and-play custom harness, so there’s no splicing or dangling wires. Once installed, it blends in completely while still doing all the heavy lifting behind the scenes.
Controls from Your Phone: Bluetooth and OneControl App
No knobs or extra screens needed. Pair it once through Bluetooth and use the OneControl app on your smartphone (Apple 5.0+ or Android 4.3+) to manage everything—brake power, sensitivity, and manual override. The big orange button in the app acts as your manual brake control for quick corrections or emergency stops, and you can check brake output through the ring indicator on screen. Even if Bluetooth drops, it keeps running safely on the last settings you saved.
Hard stops or light taps—the trailer follows right along. The internal 3-axis accelerometer senses how fast your vehicle is slowing and applies matching force to the trailer brakes. That means smooth, even braking across 1 to 4 axles (8 brake assemblies) whether you’re using electric trailer brakes. It keeps tires from locking up and eliminates that push-pull feeling on downhill grades.
Quick To Swap and Setup: Multi-Trailer Memory Profiles
If you haul more than one trailer, this controller makes it simple. The app lets you store multiple trailer profiles so each one has its own preset brake output and sensitivity. Just swipe to select the setup you want before heading out. That’s a big time saver when switching between rigs—no need to recalibrate or start from scratch every trip.
Fast Plug-In Install: Ready To Tow in Minutes
With an adhesive pad, zip ties, and custom harness included, setup is straightforward. Plug into your vehicle’s factory tow port, pair with your phone in about five seconds via Bluetooth, and let the LED go green after calibration. Mount it at any angle—the accelerometer automatically detects direction—and you’re ready to tow with confidence.
Specs
Application
Application: trailers with 1 to 4 axles (8 brake assemblies)
Compatible with: electric trailer brakes
Dimensions
Main unit dimensions: 3-3/8" long x 3" wide x 7/8" thick
Smart Device Compatibility
Smart device OS requirements: Apple: 5.0 and newer
Smart device OS requirements: Android: 4.3 and newer
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.
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.
4. Sensitivity Level: This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the max output level.
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.
Warranty
Brake controller: Limited lifetime
Wiring harness: Limited 1-year
Note
Bluetooth connection: If Bluetooth connection is lost, the brake controller will continue to function safely, using the most recently programmed settings.
Compatibility: This brake controller is not compatible, but will not interfere, with Apple CarPlay or Android Auto.
Installation kit: If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake controller installation kit (ETBC7 - sold separately).
What is Proportional Braking?
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.
51190 Curt Echo Wireless Trailer Brake Controller - Under Dash - Smart Phone Bluetooth Connection - One Control App for Brake Controller - 1 to 4 Axles - Proportional
51534 Curt Quick Plug Brake Control Adaptor Harness
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl) phthalate, which is known to the State of California to cause cancer, and Di-n-butyl phthalate, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov
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We had the chance to install a brake controller in a similar Ranger as your 2021 model and when using standard brake controller wiring like with the # C51515 to install the Curt Echo Mobile # C27JR the yellow/orange goes to the black wire, the blue wire is going to go to the blue wire, the white wire is going to go to the white wire, and the violet with white stripe goes to the red wire. view full answer...
Generally when the Curt Echo Under-Dash # C27JR says the 7-way is disconnected but it isn't, the issue is actually the 7-way is problematic, either on your vehicle or trailer. I'd check to make sure the 7-way on both does not have bent pins, or corroded or damaged in some way. view full answer...
Hi Robert; it looks like your 2023 Jeep Grand Cherokee 4xe doesn't have a brake controller port since you don't have the tow package. This means hard wiring the # C27JR is your only option for installation. If have a plug and play wiring harness I would return it to whoever you bought it from. view full answer...
Hey Arek, so it looks like Curt is the only brand of Bluetooth brake controllers but they do have two different types.
They have the super popular Curt Echo Wireless Brake Controller # C51180 which just plugs into a 7-way and is controlled via the app, or the Curt Echo Under-Dash Bluetooth Brake Controller w/ OneControl # C27JR with the adapter # C51515.
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Hello Dan, thanks for reaching out. The best way to add a 7-way and brake controller to your 2017 Hyundai Santa Fe with an aftermarket 4-pin is by using the Universal Installation Kit # ETBC7. This kit contains everything you need to upgrade the 4-flat to a 7-way, including all of the necessary wires for a brake controller.
For the brake controller, the Tekonsha P3 # 90195 is what I recommend. It is easy to use and reliable. You can wire it in using the included universal pigtail.
What... view full answer...
The standard Curt Echo # C51180 does use the same technology as the Curt Echo Under-Dash # C27JR, but whenever I've heard about the pairing issue being a problem it causes settings to become erratic rather than just being a struggle to find the correct setting. You can try uninstalling and reinstalling the app to see if that makes a difference but I believe you'll see a better benefit from going into a parking lot with your Volvo XC90 and Airstream and testing out how different sensitivity... view full answer...
If you only bought the adapter the first thing you're going to need is an actual 4-way on your 2010 Honda Odyssey. The # 118438 will plug into the connection point in your rear cargo area. Once this is done, you can plug the 4-way end into your 7-way adapter to carry over the signal functions for your trailer.
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The Curt Echo Under-Dash Bluetooth Brake Controller # C27JR will provide you with one of the easiest installations as the Pigtail # C51446 will connect it to your factory wiring. And unlike other controllers there is no dash mounted controller or knob so everything simply gets secured under your dash. Then you will control the settings for it with your smart phone using the OneControl app. view full answer...
Yes, the Stealth Hitches Hidden Trailer Hitch Receiver w/ Towing Kit # SH25VR is a fit for your 2023 BMW X5 with the M Sport Package. This comes with the hitch, wiring, a ball mount for towing, and then the accessory receiver to use for a bike rack or cargo carrier-type accessory so you should be good to go!
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Hey Brian, thanks for reaching out!
The Curt Echo Under-Dash Bluetooth Brake Controller # C27JR is a plug and play installation via the Wiring Adapter # C51455. The "play" part kind of depends on what your 2018 Toyota Tundra is equipped with.
If you have the factory 7-Way then you're good to go. If you have the factory 4-Way then you need the Hopkins # 37185, and if you don't have any factory wiring at the back of your truck you need the Wiring # ETBC7 kit.
Let me know if you have any... view full answer...
Hey Danny, thanks for reaching out!
I recommend using the Curt Echo Under-Dash Bluetooth Brake Controller # C27JR which will plug into your 2024 Mazda CX-50 using the Adapter # C32FV as long as your CX-50 has the factory tow package. I really like this brake controller because you adjust your settings via an app on your phone and then the controller remembers the settings and remains up under your dash so it doesn't affect the look of your vehicle at all.
If your vehicle doesn't have... view full answer...
Hey William glad the good word is getting out! So to add a brake controller you are going to need to first add the Universal Installation Kit for Trailer Brake Controller # ETBC7 which will utilize your existing 4-pole and add everything else needed to add a brake controller.
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There are a couple key differences between the Curt Echo Mobile part # C51180 and the Echo Under Dash # C27JR with the install harness part # C77BR. If you wanted the absolute easiest install that literally takes seconds go with the Echo Mobile as it just plugs into an active 7-way. That's it's biggest strength. The downside is that it's reception isn't as solid as the other option and it's a little more vulnerable being just plugged in outside of your vehicle.
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Hey Jon, so in theory the inline Echo Mobile part # C51180 and the under dash part # C27JR should perform the same but we have found that the under dash version works a lot better so it would be the way to go. Overall performance and connectivity just is more consistent. It's also not easy for a thief to potentially steal like the C51180. Which to install it in your 2023 Honda Ridgeline all you would need is the part # C51392 and you'd be set. view full answer...
I can understand your hesitation about drilling a hole in your brand new dash, I'd be a little leery of that myself.
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It sounds as though the Curt Echo # C51180 along with the power draw from your trailer is overloading the circuit on your 2023 VW Atlas with the factory tow package. You may be able to resolve your issues by checking to see what other circuits are drawing power from your 7-way and disconnecting those that are not necessary.
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We have exactly what you need so you can tow your trailer with the 7-Way using your 2017 Honda CR-V!
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I highly recommend going with the Curt Echo Under-Dash # C27JR for your 2023 Honda Passport since it installs with the Custom Wiring Adapter # C51392 under your dash and then you use an app on your phone to monitor and adjust your trailer brakes.
I also recommend picking up the Manual Override Button # C83HR so you can tow your trailer phone-free and still maintain access to the manual override function of the controller in the event of an emergency.
Attached are some review videos for... view full answer...
Absolutely!
When the Curt Echo Wireless Brake Controller # C51180 was first announced I was a little skeptical of the Bluetooth connection myself. The release actually went fairly smoothly and while they've had a few issues since then, I'm confident in promoting this controller as Curt has been able to iron out any bugs with their app.
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There currently are no plug and play kits available for your 2016 Porsche Cayenne. We do offer the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat # 119250KIT. This won't require you to splice into your taillight connections as it utilizes sensors to detect the activation of the light. You will be required to run power and ground wires as well for this 4-Way kit.
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It sounds like you might be interested in a trailer brake controller for your 2023 Honda Ridgeline and if that's the case we have some great options. I recommend the Curt Echo Under-Dash Wireless Brake Controller part # C27JR since it just simply plugs in under the dash so there is no drilling into the dash or knocking your knees each time you get into the truck. It would make for a plug-in-play installation when using the Curt Custom Wiring Adapter for Trailer Brake Controllers part #... view full answer...
For a basic but great brake controller the Brake EVN # TK63VR would work well in your 2013 Nissan Frontier. It would install to the factory wiring of your vehicle with the part # 3050-P which plugs in under the dash. It comes with hardware to easily attach to the console as well.
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I recommend the Redarc Tow-Pro Elite Brake Controller # RED44FR for your 2022 Ram 2500. This will connect with the Plug and Play Wiring Harness # 331-TPH-020 to the under dash connector. I prefer this controller over the Curt Echo # C27JR with the Adapter # C51458 and factory options as it gives you more adjustability and is easily controlled with the dash mounted control knob.
While the Curt is easy to install you have to control everything from your smart phone including adjusting braking... view full answer...
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