Why am I Getting a Trailer Disconnect Message Warning Light

Published 04/06/2022

Products Featured in This Question

Dielectric Grease for Electrical Connectors, 2 oz.

(1503)

$11.93

LCD Digital Circuit Tester

(28)

$27.11

Question:

Trailer connection warning keeps coming on and there’s nothing wrong with connection. How do we get the warning to keep from coming on?

asked by: Errin O

Expert Reply:

If you are experiencing a "trailer disconnect" error message, the most common reason for this is a rusty/corroded trailer connection between the tow vehicle and the trailer. In order to rule out this possibility, I recommend checking the outside and the inside of the connector plugs for any whitish/greenish material. For further protection, you can use the Dielectric Grease for Electrical Connectors, 2 oz. # 11755 to prevent future build-up.

Another possibility is that there is a short on the brake assemblies and magnets. In order to conduct the voltage measurements for the brake magnets, I recommend using a tester like the # PTW2992.

expert reply by: Bob C