Would anyone here happen to have a wiring schematic for the airmatic compressor? Im trying to figure out which plugs do what to the compressor. I have dealt with the chaffing wire thing but have fixed this problem and cannot get the compressor to start. Have checked all fuses and relay in engine compartment, but have not checked the fuse under the passenger side footwell.
I would like to see a schematic before going into the footwell. Thanks for any help.

 

My apologies for not helping anyone here, I just joined this forum. Im not sure if I could help anyone that much anyway. The only real thing I have done to my benz is, fuel pump, both headlights, auxiliary battery, and fixing the chaffing wires on the compressor. The reason people join these forums is to get advice from experts like you. I do most of the work on my vehicles myself to save money like most people do that can wrench a bit, but I simply need help to figure out this problem with the pump not turning on. I have already checked all the fuses and relays relating to the airmatic system and did pull and bench test the compressor which is working fine. Before I put everything back together in the passenger side footwell, i wanted to make sure I did not miss something there? Thanks

 

Thanks Plutoe, Thats what I was afraid of. When I pulled the fuse in the foot well and saw it wasn't blown i knew I had bigger problems because I dont have access to that kind of tool. Again thanks for your help and I will update if I get it fixed to let you know what it was.

 

Well Im happy to report that after all the things I did to try and shock the compressor back to life with no results, I pulled the plugs out of the BCM in the footwell and waited a few minutes then plugged them back in, the compressor started running and filled all the bags and struts to the proper levels. Everything is working fine again. I hope these little tips help someone else that have been having problems with there Airmatic not waking up.

 

Well, that was short lived. I came out this morning and the car was bottomed out in the rear. The compressor came on when we opened the door but it didn't run for long. Now the only side thats down is the rear driver's side. I quess its time to visit the workshop. I have no clue why it would work fine yesterday and not today. Time to open up the wallet.

 

did you check the valve? it provides the air supply to the air bags. it is located near the compressor.

 

Yep, checked that the plugs were in good shape, no chaffing or broken wires. Like I said, it came to life the other day and filled all the bags. Wife then drove the car the rest of the day without any issues. No leaking or anything, then the next morning she was parked in our driveway that's a little uneven and the rear was down a little bit on the right side. She opened the door the compressor came on for an instant and then shut down. Now the left rear is down and the right is at normal height and compressor will not activate. So now I have normal height on all three wheels except the left rear. Im totally stumped. Thanks for everyone's reply's on this.

 

You have a rear air spring leak.

 

Would that leak be preventing the compressor to activate?

 

So, i dug back into the wheel well and sat down on the ground next to the rotor and activated the trunk with the fob while i wiggled around the plugs going into the compressor and it was turning it on and off while i did this. Apparently there is a short somewhere in these plug wires. Now I just have to figure what one is the culprit. I had just got done soldering all the bad wires back together and thought that was the problem but i guess its not letting me off that easy. I will post if I figure this one out.