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Thread: Fault on D3

  1. #11
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    Quote Originally Posted by ctgiles84 View Post
    I am thinking it is the air suspension continuosly leveling and the battery is dying. Will test a few more things.
    If the suspension is continually settling whilst parked then there's a leak somewhere but levelling downwards does not consume much power, only enough to open the corner air valves occasionally. Maintaining height with the engine running uses the compressor but if the voltage is too low then no height increases will be allowed, not the lowered safe mode which is triggered by a fault generated by the ABS ecu, eg the HDC fault. HDC requires some other systems (eg gbox and TC as Sniegy suggested) to be fully functional so any fault in those will disable HDC.

    You need to see what fault codes are being stored. It may indeed be caused by a failing battery but not due to the suspension levelling.
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  2. #12
    NavyDiver's Avatar
    NavyDiver is offline Very Very Lucky! Gold Subscriber
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    Quote Originally Posted by ~Rich~ View Post
    Check:
    Battery condition - including when under load.
    Alternator - correct output.
    Brake light switch.
    Brake light bulbs.

    Hopefully it's a simple fix.
    X 2
    Replace the brake, trail lights and blinkers with LED to avoid future problems See http://www.aulro.com/afvb/d3-d4-rrs/...l-blinker.html

  3. #13
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    There are so many things this could be and it will be last fix that corrects it
    I had similar problems that increased over time but didnt have the suspension drop. For me it was a failing starter motor.

  4. #14
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    So i have got to the bottom of why i was getting faults on the D3. My second battery is dead so when it was connected it was draining the main battery causing a voltage drop. so time to buy a new second battery. thinking optima. Any suggestions?

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