Tekonsha P3; locking driver side brake at very low speed (driveway)

Simbionic

I’m about to go check and reset my brake controller to see if it corrects the situation. It worked fine for 2-3,000 miles (first year of owning Tab400 Boondock. 

Any thoughts/experience with this problem with P3?

ScottG

No firsthand experience, but if it is only locking on one side I'd check the trailer brakes first to make sure they operating properly and adjusted to the same drag.

The controller doesn't differentiate between left and right, so what you describe seems more a problem with the trailer than the P3. Of course, once you get the brakes properly adjusted, then you may need to fiddle with the controller a bit to restore proper function. 

Simbionic

Thanks! 

warbler_road

This started happening to me this summer and I readjusted the brake shoes and everything at a campground.

Come to find out: I had accidently turned on the Boost feature on my P3! So check that ...