I have a 2009 Dodge Ram 1500 what would cause the automatic lights, AC/Heater temp control, and Air direction modes switch, to all not work? The ac/heater fan still works and regular lights still work fine. Lastly, what started it is that my AC stopped blowing cold air and when I tried to recharge the system, all the things I've said that don't work being working again until the ac quits again then they all go out again. Anybody have any answer?

I have the same issue in my 2009 ram 1500. it is the heater control unit. the sun sensor on the dash sends a signal to the heater control unit and that sends information out via can-bus to control certain features including the auto headlights and AC functions you lost

Did you find out whay it was mi e is doing the same

I still haven’t figured out the permanent fix but I can pull one of the 10 amp fuses and put it back in and everything works for a while

Im having the same issue auto headlights not working .... ac....lights for control knobs and get that burning smell. Jave you figured the issue out Tim

Not that it's a permanent fix but I removed the 10 amp fuse and reinstalled like I read in other forums and everything works again. I'm sure soon it will be a trip to the dealer

What 10amp fuse do you pull?

did you guys ever figure out the answer for this issue because i'm having the same issue, autoheadlight come on and off when they want and the ac/heat and the vent controls are not working (whole climate control panel lights don't come on either ) HELP PLEASE

Continuity in all the fuses, removed 10 amp fuses listed for hvac and put them back. No need to spend money at this time. AC is working. My last recharge was last year, same for coolant. Will up date if error happens again

Continuity in all the fuses, removed 10 amp fuses listed for hvac and put them back. No need to spend money at this time. AC is working. My last recharge was last year, same for coolant. Will up date if error happens again Update: I bought a used climate control unit/module I will replace and update. Also with this issue my running lights stopped working. Will see if this fixed it.

Any update on this yet? I have 2010 ram sport and my auto lights won't come on. Less I do them manually. My climate control or defrost nothing works besides fan spees!

Yea it’s the climate control module. Go to a pick and pull spot and buy one for like 30 bucks. It should work. While you got that off you might as well replace all of your blower door actuators. This worked for me under 100 bucks and probably takes 30-45 mins.