W212 rear air suspension

[Jam80s]

Just a quick question my car has been parked just over two weeks and I returned to find the rear of the car very low, after starting the engine the rear raised up as the suspension was charged up, now the question, is this normal or could I have a slight leak?

 

[alexanderfoti]

Hmm 2 weeks is borderline, you probably have a slight leak, especially if the car was very low.

 

[Jam80s]

It was very low on the drivers side and not quite as low on the near side, or so it seemed.

 

[John Laidlaw]

Sounds like a leak somewhere

 

[steveq]

Assuming you have an S212 with rear self levelling suspension, you could check for air leaks in the the pipework. Use soapy water and look for bubbles.
If they are both dropping at different rates then it is probably the air bags themselves that are starting to leak.
The compressor is working hard to raise the car and will eventually burn out.
I would suggest that if you see that it has noticeably dropped after a few days of non use it is time to change the suspension units.