Ian Brown

I have a 2007 ML63 AMG and the air conditioning just stop blowing cold air. no message on dash, blower, and all controls working as they should. The only AC code showing is an open circuit on the rear center ac control code is B10/7, any help to troubleshoot would be greatly appreciated. The AC pressure is good no leaks and the compressor did not make any whining souds usally associated with the compressor clutch issues.

Thanks
Ian B