Does a Trailer Brake Controller Drain Battery When Vehicle is Off

Updated 03/28/2017 | Published 03/25/2017

Question:

does the brake controller draw any power when the vehicle is turned off

asked by: Rob T

Expert Reply:

Trailer brake controllers such as the Prodigy P2 # 90885 will draw an extremely tiny amount of power when the vehicle is off, but this is only what it takes to illuminate the small LED light. This power draw is so small that it would take several months for the power drain on the battery to be of any concern. Since this does not matter in typical use you do not need to worry. If you were to store the vehicle for a long time you could simply unplug the controller to eliminate all power draw.

expert reply by: Adam R