Wagon 4 matic e350 2009 with rear air suspension. The car doesn't start and has been sitting for a year , battery and suspension are good. Need to tow the car to the shop but the car is in high pitched driveway, need to raise the rear suspension, is any way to raise the rear air suspension, like jumping the wires on the compressor? Doesn't do anything with the ignition in on. I don't have the MB scan tool, Any suggestions? Thank you