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    Ross-Tech Employee DrPeter's Avatar
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    Level Control Bleeding/Charging

    Hello, from time to time we get asked, "How do we lower/raise or fill/drain the Air Suspension system?

    - This may be necessary if you are about to perform any Air Suspension system work and you want to drain the system of any dangerous air pressure.

    - It also is handy to know this procedure when filling the system, after a repair or to test for leaks.

    Please use this procedure with care, it should work on the Audi A8, Q7, A6 and the VW Touareg, Phaeton and the Bentley Continental.

    Hope this helps,

    drpeter


    Level Control Bleeding/Charging

    - Bleeding -

    Note: The bleeding procedure will lower the vehicle, proceed with caution and refer to the factory repair manual for proper repair information, warnings and cautions!

    Prerequisites:
    - System is fault free
    - Vehicle is NOT in Jack or Transport mode
    - Vehicle is on flat level ground
    - Engine running if vehicle is outside or in well ventilated area or use a battery maintainer

    If the Security Access code does not work, try Login or Coding-II

    [Select]
    [34-Level Control]

    [Security Access-16], [Login-11] or [Coding-II]
    [08367]

    [Basic Settings-04]
    Enter:
    Group 020 = to Bleed Pressure Accumulator
    Group 021 = to Bleed Front Axle
    Group 022 = to Bleed Rear Axle

    Field-4 will display the current pressure
    Note: System will time out after 60 seconds, the procedure maybe repeated as necessary to achieve the desired system pressure.

    - Charging -

    [Select]
    [34-Level Control]

    [Security Access-16], [Login-11] or [Coding-II]
    [08367]
    [Do it!]

    [Basic Settings-04]
    Enter:
    Group [023] = to Charge Pressure Accumulator
    Group [024] = to Charge Front Axle
    Group [025] = to Charge Rear Axle

    Field-[4] will display the current pressure
    Note: System will time out after 60 seconds, the procedure maybe repeated as necessary to achieve the desired system pressure.



    Wiki page created for this information:
    http://wiki.ross-tech.com/wiki/index...eding/Charging
    Last edited by Jef; 05-02-2019 at 03:54 PM. Reason: added Prerequisites

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