Question about 1999 Volkswagen Passat

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I have a 1999 VW Passat with 144K on it. The power windows, power mirrors, interior lights and the fuel tank release do not work. checked all the fuses and they appear to be fine. checked the control module under floor of pass. side and there was no moisture in the box or any signs of being deffective. Wiring to this module looked in great condition. Any ideas?

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  • hwysuper Sep 27, 2010

    how do I know if the stereo has an anti-theft code? I just purchased the vehicle used.

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  • Volkswagen Master
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Hi.

There are no other ideas, symptoms are those of a defective body control module. Other faults causing this problem are quite unusual (eg. bad grounding to fuse panel).
BCM (body control module) connector is tested using an Ohm meter to ensure each contact has continuity. The BCM itself is tested using a vag Com tool, available at the dealer or at a VW authorized dealer. Before replacing BCM or looking for other faults this are the steps to take.

Before doing anything else, try also disconnecting ground battery cable for five minutes to reset ECU and BCM. Ensure that you have the stereo anti theft code if required.

If reset does not work, then the BCM will probably need replacement. Go to the nearest VW garage and have it tested.

Regards.

Ginko.

Posted on Sep 27, 2010

  • Ginko
    Ginko Sep 27, 2010

    If you did purchase the car used, then you likely have anti theft code. VW mounted factory stereos with codes on most cars starting from mark 3 onward.

    Check if you have the code in documentation, if there is none, plan a visit to the dealer to calculate code, sooner or later you will need to disconnect battery, and if there is code, the stereo will ask for code when connecting back.

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