Question about 2004 Jaguar XJR-Series

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Air suspension fault light is on. What does that mean? Is it a big expense?

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Trust me;simply disconnect your battery for 10 minutes and reconnect it.this will reset your air ride system and more than likely it won't come back.that is exactly what they do at jag dealers and charge you god knowa how much.
good luck.
alis937

Posted on Jul 29, 2011

  • Reggie Coleman
    Reggie Coleman Aug 05, 2011

    the air module will always restore fault codes even after the neg and pos terminals are touched,thats just a temporary ploy to erase the mil display but it will come back.The module code fault is trigured by the reservoir pressure....if the pump located in the front left driver fender well is getting too weak to pressurize the retention tank then the fault code will display

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I have this same problem on my 2004 jag....McAllen Tx dealership want 1499 dollars to fix it! I said no.

Posted on Dec 11, 2010

  • Reggie Coleman
    Reggie Coleman Aug 04, 2011

    my suggestion is to 1st check the caping on the shocks...at times they will leak slowly on the caping...it will start as a weeping leak and you cant hear it....you can get some soapy water and lightly spray it around the enter deck mounts location under the hood where the air lines feed into the shocks...if you see air bubbles,then you can easily pack a towel in the leakage until you find a used shock or rebuilt one off ebay....But you fault light wont display a mil.The fault light only comes on when pressure is lost from the shock,or a static line has failed...causing one shock to lower to be lower..The CAN will trigure a fault code as the sensor detects body uneveness...

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8 Answers

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Turn engine on, without moving the car, turn steering wheel from one extreme side to another 4 times, message "air suspension inactive" should be over now (; ])

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