1. 2012 Gran cherokee Overland air suspension not working

    Hello,
    The air suspension is not working on my 2012 Grand Cherokee. It doesnt sound like the compressor is even turning on and I have checked all the fuses that refer to the air suspension system. The system is in the lowest position with the front wheel wells almost touching the front tires. I purchased a subscription to the Haynes manual which as it turns out is a total POS. Can anyone provide a comprehensive schematic of the electrical system or suggest any potential causes?

    Thanks in advance,
    Steve

  2. #2
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
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    Re: 2012 Gran cherokee Overland air suspension not working

    A factory service manual is what you want. The cheapness of others draws you until you realize that is what it is.

    Searching....



    Never look down on anyone unless you are helping them up - Jesse Jackson
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  3. #3
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
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    2012 Gran cherokee Overland air suspension not working



    Newer models needs to be reset.

    Resolved by doing the following.
    Disconnect the positive battery cable for 5 minutes.
    Pull out the following fuses:
    F05 Air Suspension Comp*
    F50 Air Suspension Mod*
    F87 Air Susp/TT
    Insert all the fuses you just pulled out.
    Reconnect the positive battery cable.
    Turn on the Jeep.
    Let it warm up for 8 minutes.
    Test the Quadra Lift system by changing the ride height.



    Never look down on anyone unless you are helping them up - Jesse Jackson
    Last edited by JPNinPA; 09-14-2020 at 09:28 PM.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  4. #4

    Re: 2012 Gran cherokee Overland air suspension not working

    I tried the reset procedure this morning and now every time I try to manipulate the ride height the message "Please wait, air suspension system cooling down" is displayed in the gauge cluster and the ride height still doesn't change. There doesn't appear to be a leak, it seems more like the compressor doesn't even turn on.

  5. #5
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
    Posts
    5,523

    2012 Gran cherokee Overland air suspension not working

    Have you checked for codes? Is the check engine light on?

    In this video there seems to be a scan tool that may help you diagnose the issue.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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