So a couple of weeks ago, the front dash fan in my ML stopped working. I checked all the fuses and relays and all look good. I brought it to my local Mercedes repair guy who ran diagnostics on it, but they failed reading the climate control section.

The rear fan does turn on, all of the other controls appear to work correctly, and cold air does blow out of the vents as long as I'm moving. That leads me to believe that the AC sensors are working, just not the blower.

Has anyone seen this, have any information on how to troubleshoot this issue or at least the removal of the fan so that I can have it tested?

Any and all help would be appreciated.

Steve