Trailer brake disconnected message - Diesel Bombers

Go Back  Diesel Bombers > Dodge Cummins > 6.7 Liter Dodge Cummins 07.5-12
Trailer brake disconnected  message >

Trailer brake disconnected message

6.7 Liter Dodge Cummins 07.5-12 Discussion of 6.7 Liter Dodge Cummins Diesels

Trailer brake disconnected message


Old 12-06-2017, 12:11 AM
Thread Starter
Join Date: Oct 2010
Location: Traverse City MI
Posts: 7
Thanks: 0
Thanked 1 Time in 1 Post
Default Trailer brake disconnected message

2010 Cummins
Every 3 to 5 minutes I get a ding and a message trailer brake disconnected". Get this on 2 trailers, both work fine hooked to a buddies Ford. Cleaned plugs, hook together snug, ground checks out. My brother has the exact same with his fifth wheel hooked to his 2017 Ram. Any ideas?
Reply With Quote
Old 06-16-2018, 06:34 PM
megacabby's Avatar
Join Date: Jun 2018
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts

I had this Trailer Disconnected message many times immediately after a car wash or going through heavy rain regardless of trailer in tow.

Took it to one dealer and they used a 12v tester and advised it was fine as long as there is current. Took it to Action Truck in Whitby, Ontario and the tech tested each and every wire and noticed there was current but, the current was not consistent when the 7 Way and 4 Way wiring harness was moved.

Turned out that the connection for the 7 Way and 4 Way located by license plate of the rear bumper was corroded.

Smooth sailing ever since after having the 7 Way and 4 Way connection was replaced and properly sealed.

Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.