Monza Air Suspension Compressor Issue

Sounds rough! I had a similar issue with my Monza. Those air suspension compressors can be a pain. Before you go tearing everything apart, did you check for any obvious air leaks in the system? Sometimes a small leak can cause the compressor to overwork itself and eventually fail. Also, when you wiggled the connector, did you happen to check for any corrosion or damage to the pins inside the connector itself? Even a tiny bit of corrosion can cause a bad connection.

Good call on the corrosion! I didn't specifically look inside the connector. I'll give that a shot. As for air leaks, where are the usual suspects? I gave the air lines a quick once-over, but didn't see anything obvious. Are there any specific spots on the struts or compressor that are prone to leaking?

Yeah, definitely check those pins. On the leak front, the strut air fittings are common culprits, as well as the compressor itself. Honestly, chasing air leaks can be a nightmare. If you're not finding anything obvious, and you're getting compressor fault codes, it might be worth taking it to a workshop with the right diagnostic tools. They can usually pinpoint the problem pretty quickly.

Thanks for the advice! I checked the connector pins like you said, and they were indeed corroded. Cleaned them up, and the compressor kicked back to life... for about 5 minutes. Then it died again. Checked the voltage on the connector and there was none. Finally managed to trace the cable to a defective plug connection. Cost me 95€ to fix it. Lesson learned: always check the simple things first! Thanks again for pointing me in the right direction.