Hello Leuts…. So it was clear today, without climate —> SWITZERLAND! That’s why I put the good piece into operation, but the noises that came there, ???????? So it’s like that, when starting, after the stand at the traffic light e.g., in the engine room a noise like: BLACK/SHIFT AT THE FUTURE or HIGH-TURNING BRUMMEN etc. When I switch off the climate, it is off or I drive backwards, is also nothing to be heard… Only when starting this HIGH-TURNING GERAUSCH…. listens but then again when I come to 3000 – 4000…!? For ideas or FACHWISSEN I would be really grateful!