Why Does the Light on a Primus Brake Controller Stay On When Vehicle is Off

Updated 01/07/2016 | Published 01/06/2016

Question:

Should a very small red light stay on after the vehicle is turned off.the light is only about the size off a plan head and stays on even after the vehicle is turned off.

asked by: Emil

Helpful Expert Reply:

The indicator of a brake controller will stay on for several minutes after the vehicle has been turned off and exited. If you leave the vehicle undisturbed the controller will go into sleep mode and the light should go off. However, even if it did the amperage draw of the LED light is so miniscule that it would take months to drain a vehicle battery. Which by then the battery would be dead from inactivity.

expert reply by: Jameson C