2006 4x4 QC Hemi, limted slip, auto. My brake/ABS lights come on when I tow. Then when I am done towing, in a day or so they will go off and remain off until I tow again and the cycle repeats. Doesn't matter what I tow. It happened with my 3000 pound camper and also my 1000 pound boat.

Gonna probably replace the rear axle speed sensor since at one point I did see the MPH needle drop for a split second then return to normal and when the lights are on, cruise does not work (assume speed sensor related) but thought I would see if anyone had any more insight.

I searched but could not find anything relating it to towing only.....

 

Hmmmmmm that's very interesting.
I couldn't think up why that could be happening, except if the tone ring was somehow flexing under load or something????
Post up what you find please?
Al.