Mercedes ML 320 W164 Control Valve and DTC 9006
Updated: Aug 9, 2021
Today I got a call-out to an ML 320 W164 , the new owner had just recently bought the car and the aircon did not work. It turned out to have a shorted A/C Control Solenoid Valve, shorting out power to ground. As this was an electrical failure, it was safe to install a new Control Valve into the Denso Compressor and complete the Aircon Regas.
It is important to note that Mercedes has a 'special' Control Valve that has an internal diode - many aftermarket control valves and aftermarket compressors might come without the diode, causing a trouble code DTC 9006 "Component A9 ( AC Compressor ) has Short Circuit" error, and the HVAC controller will shut off the compressor.
To complete the Aircon Repair, Mercedes requires an adaptation procedure, which teaches the HVAC controller the working range of the new Control Valve.
To book this repair for your car in Perth, Rockingham or Mandurah, please text your details to 0417999478 or complete an Online Booking, choose Inspection, and leave a note about the required repair.
All repairs include a 12 month warranty
Mercedes ML320 Aircon Repair | atmechanical | Perth, Rockingham and Mandurah Mercedes ML320 Control Valve Repair | atmechanical | Perth, Rockingham and Mandurah Mercedes DTC 9006 Compressor A9 ( AC Compressor ) has short circuit | atmechanical | Perth, Rockingham and Mandurah Mercedes Compressor Adaptation | atmechanical | Perth, Rockingham and Mandurah