Hi, yesterday I switched off my car without any problems – today I wanted to go off when after about 1 km loud metallic scratching noises came from the front left wheel box. So back and car changed. When I came back, I picked up the Phaeton with car lifter mode, the wheel was unscrewed – brake caliper and disc had to loose until the stone between the brake disc and the protective plate behind it fell out. Everything was assembled again, I had to realize that the car goes so deep that I can’t get the car lifter out. With the help of a 2nd car lifter I have the then also recovered … but the Phaeton lies at the front left deep. In the display comes the message “Failor chassis workshop”. He no longer pumps up. Now fix with VCDS and delete errors – it is a fact in the control unit 34 (Niveauregulation) the error “Regulation off” inside. Problem: it cannot be cleared! The compressor in the rear says no sound. How can I solve the problem?