Troubleshooting Hayes Genesis Brake Controller That Applies Minimum Braking During Sudden Stops


I have noticed that during braking, the LED display will never read a number beyond the minimum power setting. For example, I have minimum set at 25, and during the course of driving, and doing sudden stops, I have noticed that I do not see this number go above the minimum. I have my maximum braking set around 65 or so. Am I supposed to see this display rise to the maximum number of 65 in this case... if the brake controller is applying that amount? Should I switch it to a current mode to actually view what is being sent?


Expert Reply:

It sounds like your Hayes Genesis Brake Controller # HA81790 is not sensing the deceleration of your truck and trailer so it is not applying more than the minimum braking power when you apply the brakes. During sudden stops you should see the controller the maximum braking power you designate. This typically means that your brake controller is not mounted correctly.

Because this controller operates with an internal inertia sensor, it must be mounted between -35 degrees and 90 degrees in the vertical plane. The Genesis must be mounted on a level horizontal (side-to-side) plane and must be lined up with the direction of travel for the internal sensor to function properly.

I also attached a link to an FAQ article on brake controller installs for you to check out.

expert reply by:
Jameson C

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