Car is a 1997 S500 coupe.
This problem started a few months ago, I would accelerate, the lcd's in the controller's fan speed would drop to one bar, blower would cut out, and about 60 seconds later, it would return. In the beginning it only did it once or twice a day, only during acceleration. I also noticed that when I started the car, it would start out on one bar for about 60 seconds before returning to the speed the car was turned off with.

The problem has now intensified.....it does it everytime I accelerate, sometimes when I decelerate....often times when I hit a bump, and sometimes when I turn left or right.....on a bad day, the fan speed display will flicker....one hint with this thing, when it is acting up, if you open and close the passenger door, it will also cause it.

So far I've replaced the voltage regulator and changed all climate control fuses. I've read that there are error codes that can be pulled, but have only seen instructions on the older modules with the wheels. any help would be greatly appreciated.

Thanks in advance.