What Difference Between Max Output and Sensitivity Setting for Curt Echo Mobile Brake Controller

Updated 08/18/2020 | Published 04/29/2019

Question:

Hello, I just installed this brake controller on my 2019 Explorer and have to admit that I am a little confused by the max out vs sensitivity settings. Do you have a recommended starting point for the settings assuming that the trailer is ~4000 lbs. and is dual axle? Any suggestions on tuning it in? With my old Prodigy P2, Id adjust the gain so that when I braked, it was similar to when the trailer was not attached. How do I do that with this controller?

asked by: John S

Expert Reply:

The difference between sensitivity and max output for the Curt Echo brake controller part # C51180 is that max output is the max braking power the controller would put out if it felt like it needed to apply them as hard as possible. So this needs to be the setting that gives you the max braking power before the tires of the trailer lock up. Sensitivity is how reactive you want the controller to be to vehicle braking. Once you set the max output you then tweak this setting so that the trailer brakes apply as smoothly as you apply the vehicle brakes.

Here's how Curt recommends you set both of these:

Starting with the output adjustment, drive forward on a dry and level paved or concrete surface. At approximately 25 mph, apply the vehicle's brakes. If trailer braking is insufficient, increase the max output setting in the brake control application. If the trailer brakes lock up, decrease the max output. Repeat this process until stops are firm, just short of lock up.

Once the output is set, adjust the sensitivity by driving forward at approximately 25 mph and press the brake pedal. The vehicle and trailer should make a smooth stop. If the stop seems slow and more aggressive braking is desired, increase the sensitivity level through the brake control application. If the stop seems too
aggressive, decrease the sensitivity level in the application.

Make several stops at various speeds and adjust the sensitivity until stops are smooth and firm. Slight adjustment to the output control may also be desirable.

expert reply by: Jameson C

Steve

7/30/2020

2020 range is stopped, start to roll and reapply brake pedal the brakes temporary lock up then release. Happens also happens when trying to back up. System seems fine after it unlocks from this momentary lock up. What could be the issue? This started after a 3 hour tow.

Jon G.

8/7/2020

When you reapply the brake is it like an emergency kind of situation where you are at a red light, thought it turned green, but then had to hit the brake again? If you hit the brake again quickly then the Echo could be sensing that quick stop and applying the brakes like that. Same with reverse. Are you coming to a full stop or shifting into reverse without stopping? Also, is it like your brakes lock up for a few seconds or you're just getting an initial resistance?

Steve

8/7/2020

@JonG I had barely touched the break pedal when the trailer breaks locked up. Not putting any pressure on the trucks break pedal. Took the setup to Airstream, they contacted Curt. The resolve was that the Echo need to first be plugged into the tow vehicle 7 pin connector them plug in the trailer cable to the Echo.

Jon G.

8/18/2020

Glad you were able to figure it out!