A friend just sent me a link to a blog from someone that bought a new Ram and determined there was a problem with the integrated trailer brake. Wondering if anyone else has come across this. With the trailer hooked up but no brakes applied, he could hear a hum coming from the brake controller. When he felt the trailer brakes, they were warm. He then tested the brake line from the truck and measured 1.28 volts. Should be zero. Wouldn't this be enough to cause the brakes to drag not to mention premature brake wear?
The dealer service department couldn't resolve it so he installed a Prodigy and measured zero without brakes applied.
Any thoughts?

Dave

 

It ain't right. The hum is the controller pulsing the brakes, as in applying them. Shouldn't do that with pedal up.