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Thread: Sound of leaking air from left rear suspension

  1. #1
    Join Date
    Apr 2022
    Location
    Ct
    Posts
    4
    My Cars
    2017 BMW 740 XI

    Sound of leaking air from left rear suspension

    Recently I have noticed that after I turn the car off there is a sound of leaking air from the left rear suspension (behind the tire) it can last for 5-10 minutes after the car is turned off. The car is not sagging and there are no warning lights. When you turn the car off the car does lower a bit in the rear, I assume this is the air suspension adjusting.

    This sound has been there for a few weeks with with no sagging or warning light. last week the car was bottomed out and i took it to the dealer and they had the air suspension replaced (under warranty) after the fix the sound of leaking air went away temporarily however it has not come back.

    The car has gone back to the dealer 2 times and they can not find any issue with the suspension or identify what the cause is.

    Would appreciate any thoughts on what might be causing this sound

  2. #2
    Join Date
    Apr 2021
    Location
    New York
    Posts
    15
    My Cars
    2014 BMW 740Li xDrive
    Quote Originally Posted by 87155 View Post
    Recently I have noticed that after I turn the car off there is a sound of leaking air from the left rear suspension (behind the tire) it can last for 5-10 minutes after the car is turned off. The car is not sagging and there are no warning lights. When you turn the car off the car does lower a bit in the rear, I assume this is the air suspension adjusting.

    This sound has been there for a few weeks with with no sagging or warning light. last week the car was bottomed out and i took it to the dealer and they had the air suspension replaced (under warranty) after the fix the sound of leaking air went away temporarily however it has not come back.

    The car has gone back to the dealer 2 times and they can not find any issue with the suspension or identify what the cause is.

    Would appreciate any thoughts on what might be causing this sound
    Sounds like bad shock absorbers in my opinion.

  3. #3
    Join Date
    Apr 2022
    Location
    Ct
    Posts
    4
    My Cars
    2017 BMW 740 XI
    we replaced the the Air Spring Strut 2 weeks ago.

  4. #4
    Join Date
    Apr 2022
    Location
    Ct
    Posts
    4
    My Cars
    2017 BMW 740 XI
    I went to record the sound for the Dealer and placed my had behind the wheel to record, What i noticed is that the car lowers a tiny bit as the air bleads out. Its not noticeable unless you have your hand there. The air spring strut was replaced, there are no warning lights on the car yet it is still leaking air of some sort.

  5. #5
    Join Date
    Jul 2012
    Location
    Dallas, TX
    Posts
    504
    My Cars
    2001 BMW 750il Sport
    Air line is cracked. It will burn out your pump if don't fix it soon.

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