Last week the AC on our '99 500sl stopped working when the car was at low speed and at idle. No codes on the AC system. With help from a MB list, narrowed it down to the aux fans not coming on as the probable cause. Can anyone help troubleshooting why they won't work? The aux fan fuse is good. I assume there is a pressure or temp switch that is not working, a broken wire, and I've read about a rheostat on some MBs, but don't know what to look for or where in the engine bay. Any help is appreciated.
Pete