cruise control kicking out

We're you driving into the wind or a strong crosswind?

I had the same problem with my 2009 Ram 3500 and the problem was fixed by replacing the "clock spring" in the steering wheel.

Are you using the transmission's tow/haul mode? Was the transmission shifting a every minute or 2?

I personally do not use cruise control when towing my TT. I like to let the speed fall a bit when going up slight hills and increase when going down - as much as traffic allows.

There is a recall to have the PCM reprogrammed for the cruise control. but that is for failure to deactivate. sometimes the cruise wont stay engaged if throttle position stays above a certain percentage.

https://www.cars.com/articles/48-million-chrysler-dodge-jeep-and-ram-vehicles-recall-alert-1420700111384/

Every cruise control I’ve had will “drop out” of cruise if the speed falls more than X number of mph below the set speed. It seems like you would WANT it to work that way. If the vehicle is unable to maintain the set cruise speed within a reasonable tolerance, maybe something is wrong and the driver should take over.

On my newer trucks, they will even drop out of cruise if I hit one of those potholes from heck that jar your teeth out. I try to avoid those of course, but sometimes...........

:):)

Could also be as simple as the switch on the brake pedal being out of adjustment.

zigzagrv wrote:
Could also be as simple as the switch on the brake pedal being out of adjustment.

That was indeed a problem with them some years ago. The switches weren't adjusted right (which required replacement) and going over a bump would cause it to activate the brake lights and kill the cruise.

OTOH, I would suggest that if your truck is working very hard, like bucking a head wind, that you don't use CC. I think it's better to slow down a bit rather than cruise at WOT.