[TravellerChris]

Any update PXR.1 as my car is currently undergoing all what your car has gone through. What did you find out at the garage? Mine will raise when the diagnostic computer is used to raise it but it won't raise at the same time as it cuts out but when done independently it raises the airbags but comes down as soon as engine is turned off. I have changed the outlet solenoid valve, the dessicant chamber and beads are dry but only thing I have not tried is order a new relay. Also I think the contributor that said it may also be indicative of a low battery may have a point as I am getting that message on the dash too. That said, I have not been able to drive the car since it dropped on chassis in June. I do run the engine sitting periodically though. Any views?

 

[TravellerChris]

hi.At the first garage the diagnostic machine stated “transport mode active”. That sometimes is an indication that the car battery is old. However, I have replaced the car battery a couple of years earlier and she knew that wasn’t a problem. No error codes were found. It was suggested I go to a garage that specialises in BMWs. They found a loose electrical connection to the release solenoid. Once that was reconnected, they found no error codes. the suspension now races and falls successfully. I showed the mechanic my old relay switch. He said it it had certainly burnt out and I’ve done the right thing to replace it. It seems odd that your car drops when the engine turns off. Have you found out where the air is being released from? Is that from the release solenoid? Is it from the air bags? Is it from the tubes to the airbags, is it from somewhere else on the compressor?
good luck.

To be honest, I don't know where the leak is coming from or if there was indeed a leak but my guess is, it is the compressor unit. Well, I have replaced the air bags and a new relay but still sits deadpan on the chassis. I ordered a new compressor too but I was sent one not compatible with my car. The funny thing though is, when I was under the car taking out the compressor, I noticed F07 on the panel plate however, my car log book says F11. Also when I put the identity code from the old compressor to order parts, it comes up with F11. Has anyone ever had the same issues or observation? Anyway, that's beside the point.

I have ordered a new block valve which I will install on the old compressor to see if that works pending the replacement for the one not compatible arrives.
I am just hoping that after installing either the new block valve or new compressor, I won't experience what you went through despite you installing everything new. Thank you for reply.

 

[TravellerChris]

Hello PXR.1, I am finally happy my suspension issues resolved today. I ordered a new compressor from Germany and as soon as I fitted it, my car chassis function restored! This is after a course of diagnostic treatments from changing the outlet solenoid valve, then the intake solenoid valve,, new air springs and then ordering new relay but nothing worked until I changed the whole compressor. It has been a journey of knowledge and learning which, without the good input and advice from fellow Bimmer owners here, I would still be in the wilderness over my car chassis issues. Thank you!