legsrgv
New Member
Hi all, so I own a 2015 CLS 220 bluetec with 44k miles , it has the rear self levelling suspension not the airmatic, just recently I have seen the rear suspension sagging quite badly, I have had both rear wheels of and checked airbags and air lines, no leaks at all, the compressor and manifold appear ok with no leaks, on further inspection I have found that both sides are losing 1mm every 15 seconds when shutdown, when I start the car the compressor kicks straight in and inflates the airbags, I carried out same test with engine running and results where the same 1mm drop every 15 seconds, all I can think it could be is the Manifold, does this make sense, on the self levelling suspension I think this is the only common part for both airbags to allow them to lose air at the same time, thanks for your time everyone