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Passenger window has mind of its own!

Raveydavey Feb 21, 2010

  1. Raveydavey

    Raveydavey New Member

    Hi all,

    Am owner of an a4 2.5 tdi S reg, which I have had for a few months now and have a bit of an issue whereby I park and lock the car and return to find the passenger window fully open.

    Now this has happened twice and both times in busy areas. Once in shopping centre car park and other at a busy garage near town.

    At first I thought it was me keeping my finger on the unlock button but if I do that it unlocks and both front windows open. Not sure what is happening and wondering if I should just diconnect the passenger window electrics.

    Bit worrying to leave your car and come back later to find a window fully open.

    Anyone had the same or know of anything similar?

    Thanks in advance.

  2. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Clutching at straws, but perhaps theres some dampness in/around the central locking pump causing it to act oddly?

    As you say though, the signal from the locking ecu goes to all four windows, so it seems strange to me.

    I've just had a look at the diagram, and it seems that the window motor itself contains an "ECU" of sorts. This recieves a feed from the ignition switch, as well as a permenant live, and then recieves the signals from the window switches, and the central locking ECU. Perhpas there is something wrong with this?
  3. tufftee

    tufftee New Member

    Hi All I have had this problem twice myself!
    Now i won't walk away from the car after locking it until i have checked the windows
    Both times it happened to me it was raining heavily
    and i am guessing that when you open the drivers door to get out a small bit of rain water seeps into
    the switch?
    just my guess?
  4. Oranoco

    Oranoco Well-Known Member

    Mine's done it as well but I only had the drivers side window down about 2". I know it was up when I walked away from the car but the following morning it had dropped. Did it about 4 times but then never repeated it. Very odd

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