W220 S500 noisy Airmatic pump!

[mattyv33]

Had this for a while now, wondering if anyone has experienced similar.

After about 3 weeks of owning the car it started making a really load groaning noise from the drivers front wheel - it comes on intermittently and seems to stop with a hissing noise when speed drops under 20mph. It is really loud and comes on at random times - if I press the airmatic button to raise to maximum height it takes 15-20 seconds which I have read means the pump is working OK. Anyone have an idea what it could be?

Would be grateful for any input!

Cheers

 

[Auto-mobile]

Chances are the pump has blown the back off itself, it exposes the piston is extremely noisy but still work as a pump.

 

[mattyv33]

Oh right, is there an easy way to access this and can it be put back on?

Thanks for the reply!

 

[Auto-mobile]

You will need to remove arch/under plastic trims to gain access, new pump time really unless your handy with a drill and tap and the end cap is still floating around. It riveted on originally and the rivets rot out.