So.. I build a workaround and I think its perfect.. It has been working for 1000km and I think there no problem anymore... My Solution: I buyed an second pressure switch.. the pressure switch is between the relai and ignition+, so I have automatically permanent 8 bar in the air tank.. But when...

Ok.. It's just raining right now.. I hope it will end in the near future

hehe I'm still allive and I will share the solution but I was not home last week and I didn't really have much time last week.. If the weather is okay, I will check all of that tomorrow :):) but first of all thanks to everyone to help me!

hmm.. I can't imagine that, but I will see it when I disassemble the fuse box. But I can only do it on the weekend because I don't have much time this week.

What are the cables for?

yep since 2019

I checked the wire connection between the fuse box and the ECU and I have below 0,5 Ohm, so the connection is good.. :/

wait wait wait there is nothing of that "see/feel/hear the relay operate" EDIT: it's still the same problem that the relay wont start to work

I already done that and nothing happened

oh okay.. Is this difficult to disassemble?

nope which white connectors? HAHA yeah the "gefickt" (in english: "fu ck ed") is absolutely brilliant ;D so you mean it help when I spray PCB Cleaner into the fuse box?

oh yeah that make sense thank you!

thanks ok what is an duff relay, I always associate duff with the Simpsons xD

nope yeah I know that it's ridiculus but yeah I know that problematic

haha good joke ;D so I have an relay tester and the relay works but I have done this before.. and nothing happened

Nanocom says all doors/tailgate are closed. I set the Jumper on R20 and it works The picture is copied from the internet.

The inhibit switch is working fine, says the nanocom

thats under output and that's what I always do. But I tried with a jumper as relay the compressor start..

okay.. I installed the old compressor, which was perfect except for the fact that it can no longer build up the pressure. The thermal switch works and it's still the same problem.. Nanocom says compressor is on but it isn't.

yeah thats what I have done.. but where is that switch located in the compressor?