Meaning of .C. Display on Tekonsha Primus Brake Controller

Updated 01/23/2021 | Published 01/21/2021

Question:

Brake controller My brake controller screen just got a.C.on it and I’m not sure what that is

asked by: Jay T

Expert Reply:

The .C. you're seeing on the display of your Tekonsha # TK90160 Primus Brake Controller indicates that there's a trailer connected and that the boost feature is turned on. To turn off the boost setting, press the boost button located above the LED display a few time until the decimal point after the C goes disappears.

If your trailer isn't plugged in, and you're seeing that display the most likely culprit is a dirty or corroded trailer connector on the vehicle side.

expert reply by: Mike L