How do I know if my tekonsha brake controller is working?

Check that the light on the top right of the controller is green. If the light is not green, the controller is not connected to the trailer or there is no power or ground to the controller. Check that the trailer’s electrical connector is fully seated in the tow vehicle’s receptacle.

Why is my brake controller not working?

Brake controller loses connection to battery ground. Ground wire was not connected to negative battery terminal, ground area does not have solid connection to ground. Ground connection to negative battery terminal is loose. Ground wire has been damaged and exposed wiring is touching a metal area.

How do you test a factory brake controller?

Press down on the brake pedal while watching the brake controller. The display on the controller should light up and hold a relatively steady reading, which should not vary by more than 1/10 of a volt up and down. It may be necessary to turn the ignition key to the “On” position for this step.

How do I reset my tekonsha brake controller?

You can reset the controller by unplugging it for 15 minutes. However that should not be needed if you just need to adjust the output power. Just use the buttons on the left of the controller to select the output voltage you want.

Why does my trailer brake controller stay on?

Expert Reply: Most brake controllers will stay active for several minutes after the vehicle is turned off and then will eventually go into sleep mode. The small LED light draws such a small amount that it would it would not cause your battery to drain.

How do I turn off tekonsha P3?

Expert Reply: The Tekonsha Prodigy P3 Brake Controller, # 90195, does not have an on and off switch. It will go into sleep mode after several minutes of no activity. The power draw when it is in the sleep mode is so negligible that it will not discharge the battery.