Hissing sound issue from front suspension
Thread Starter
Newbie
Joined: May 2019
Posts: 1
Likes: 0
2012 S300
Hissing sound issue from front suspension
Hi Everyone,
i'm new to the forum and hope some one can help me based on the symptoms. My car is 2012 (S300) model. The dash displayed a warning message on the screen which i can't remember exactly but it was like "suspension fault". I cleared the fault and the message didn't come back again. The car drives fine. but i'm hearing a hissing sound when the car drives through the speed bumps. The hissing sound comes from the left front tire when i raise the car up only. when the car is lowered then the hissing sound does not come. however hissing sounds is loud regardless if the car is lowered or raised during the bumps. i'm keeping the car in normal height for now.
I've searched through the forum for the key word air leaks but didn't find anything related to my issue. Can you some one share the links for a similar issues or guide me to on how to troubleshoot so that i can take it to a the workshop but not the stealership since there is only 1 in my region. I'm sure they'll tell me to change all the 4 air-matic , air compressor , sensor and all the kit.
Thank you
i'm new to the forum and hope some one can help me based on the symptoms. My car is 2012 (S300) model. The dash displayed a warning message on the screen which i can't remember exactly but it was like "suspension fault". I cleared the fault and the message didn't come back again. The car drives fine. but i'm hearing a hissing sound when the car drives through the speed bumps. The hissing sound comes from the left front tire when i raise the car up only. when the car is lowered then the hissing sound does not come. however hissing sounds is loud regardless if the car is lowered or raised during the bumps. i'm keeping the car in normal height for now.
I've searched through the forum for the key word air leaks but didn't find anything related to my issue. Can you some one share the links for a similar issues or guide me to on how to troubleshoot so that i can take it to a the workshop but not the stealership since there is only 1 in my region. I'm sure they'll tell me to change all the 4 air-matic , air compressor , sensor and all the kit.
Thank you
Senior Member
Joined: Jul 2011
Posts: 328
Likes: 56
2012 S350 Bluetec 4MATIC; 2011 ML350; 2005 C230k;
It is most likely air suspension leak. New strut on ebay is $250. I'm going to replace front right on my 2012 S350 because hissing sound when vehicle is rised.
