I have an 08 Dodge 2500 CQ 4X4 and use it with a camper. When the camper is on, I inflate tires to the desired psi, set to heavy load and away I go. The problem comes when I take the camper off and deflate the tires and reset to light load. I followed the manual instructions as follows:

1. Turn ignition to on
2. Deflate tires to recommended psi (on door jamb)
3. Reset to light load
4. Turn off key

When I start the truck, I get a low pressure warning light. Am I doing something wrong?

 

I did not know that the 08 2500 has TPMS, I have a 06 2500 and I haul, tow, and drive empty, on average I keep the stock BFG R/T at 50 PSI, rides rough empty, but works out the best for my useage.

I'm not answering your question, but the more thing a ma bobs a truck has the more freaked out every one gets when dash light warning lights worn of impending missel strikes.

I do like your truck !!