my air suspension would only rise but not decrease, so this is what I did to fix it. No more faults with suspensio working a treat. fualt code C1A13-64 Pressure does not decrease when venting gallery.
Thx for the video! I am assuming this was a Hitachi unit? Do you think it is possible to unscrew the dryer unit and twist it off without removing the entire compressor unit off the vehicle?
