Originally Posted by Mike Benvo
If you're talking about changing the "ALL" function to the residual heat, yes I can do that. I'm not even sure what the ALL function does. My 08 M3 says rest.
If you do that, do you lose the "ALL" function while the car is on? Or does it still function as the "ALL" button while the car is on and then perform the "REST" heat function when the car is off?