Dear Members,

A few days ago, when I switched off my car, there was a loud noise(Like a hammer Drill!) from the front bumper and after 10 minutes ended up by smoke, and when switched on "AIRMATIC, VISIT WORKSHOP" on screen

After a day the car was not lower at all, so I guess no leakage

I purchased the Compressor and relay(@£190.87 +VAT & £22 + VAT) and took it to a Mercedes specialist and repalced the airmatic pump and relay and it works (up & down) but have a drilling noise sometimes (not in hammer mode!!),

a friend told me to check the relay again, and I noticed that the guy who replaced the relay, made a mistake and instead of the Airmatic relay, he changed with another relay!!!
Now I changed the correct Relay but still that noise exist, (now it is only when the compressor works, about 10 seconds)

My questions are,
Could the faulty relay damaged the compressor in just two days( about two hours of driving)?
Assuming the answer to first Q is negative, is there any other parts that needs to be replaced, any valves, etc?

Old Compressor



Many thanks
Mike

 

dear massssoud,


give a good noogie to that technician.

if the relay got the same configuration, no damage is done.

it is normal for the compressor to have the humming noise, but not the drilling noise.

drilling noise means that the spring/rubber damper position is not properly installed and therefore have contact between compressor and bracket.

 

Many thanks for the reply,

I will take the car to another mercedes specialist garage and will post the outcome here

 

Hi...I have a almost constant humming noise coming from under my hood close to my right front wheel well on my 2002 s500. It sounds just like an air comporessor (I assume it is just that for my air suspension) but I don't think it should turn on constantly and make so much niose. I mean people will stare at the car when i drive by and ask me what the noise is..it is that load. Been going on for a couple of months now. Is this a bad compressor? Could I replace it myself? Where can I get one? I assume there is an air compressor for each "side" of my car but not sure.

Thanks!

 

Seems like you have an air leak. Check this and other forums for help on the airmatic system. All info is there.

Rgds
Odd