CLS Coupe (C219) Discuss the CLS Coupe.

Airmatic compressor runs for short time when car starts, then shuts off.

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Old May 11, 2025 | 09:34 AM
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CLS55 AMG
Airmatic compressor runs for short time when car starts, then shuts off.

2006 CLS55 AMG

Vehicle is slammed to the ground because the valve block solenoid blew off the back causing a massive leak. Replaced that, thought all was good, but compressor will only run when car starts for short time (10-15 seconds) and then will shut off. Things I've checked:
1) All fuses under hood, in drivers side panel next to steering wheel, all fuses in trunk, all fuses under carpet on passenger side floor..all good.
2) There are 2 relays in under the hood in the fuse box I've checked and they are both pulling in.
3)Jumpering the air compressor out, it will run.
4) disconnected plug to the compressor, started car, and getting 14VDC for sort time, then shuts off back to 0VDC.
5) Disconnected plug to compressor, checked continuity between plug and relay in the back of the fusebox under the hood all good.

There is something telling the relay to stop sending power to the compressor and right now I don't know what that can be because this wasn't happening before. Perhaps I bumped something under the wheel well removing the wheel well cover, but RN everything is plugged in.

Anyone have any ideas?
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