OK, first post, tried looking through old threads and kinda got lost so sorry if this has been addressed and I missed it. I have a 2003 S500 with airmatic failure. Last year I had replaced the pump as the vehicle sat on the floor, just happened a 2nd time a few days ago! Except when at the dealer they had said the Airmatic Control Module is bad! I was told this would cost 2,200 to have repaired. I did some research after MB told me that the part number is 2205454132, however I have not found a single used one with that number but keep getting referred to 2205450532, basically my question is, which number is correct and also is the 0532 interchangeable with the one parts guy from MB told me (4132)? Any help would be great! Thanks

 

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