Newbie to the forum but not new to suspension problems. So had issues previously with my E class dropping overnight. Changed the air bags 3 months ago and working fine since. Now, vehicle stays up overnight but over the last 2 days when I start to drive the vehicle drops and doesn’t rise unless I stop and leave it for a while. Before I go to main dealer I’m hoping I can make some simple changes to rectify it but currently at a loss

 

So just back from diagnostics. Have an air leak that means that while the car is being driven it’s difficult for the compressor to maintain pressure. Seems to be the airline of valve as the bags hold pressure overnight. Booked on for further testing Monday. Also now got an issue with the bonnet closed sensor but that’s another story

 

Best of luck with that