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Thread: Interior/Courtesy Light

  1. #1
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    Default Interior/Courtesy Light

    Hi all, not sure if this is the correct section, if not i apologise in advance.

    Now, to the fault.

    I have a basic Vectra with only the front interior courtesy light (the big main one next to the alarm sensors) i dont have map lights, a rear interior light or door mounted courtesy lights,

    so, when i open a door the only light which comes on is obviously the front one. Anyway, until recently when i opened any of my 4 doors the light came on and I got the wee "car with door open" display inside my rev counter (54plate prefacelift) which was fine.

    However, now when i open my rear drivers door, if i only open it very slightly i.e. just off the catch the interior light comes on as does the rev counter display, however if i open it any further, i.e. fully open, the interior light goes off and the door open display in the rev counter disappears, the same as it would do if the door were closed, so im guessing maybe somethings broken causing the sensor to think the door is closed.

    any ideas guys?? cheers

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    Regular Member Ste's Avatar
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    Default

    The first place to look is the rear door lock. This is where the switch is located to trigger door open. And of course the wiring.

    Firstly try opening the rear door fully and using a screwdriver, close the latch in the door lock to the first and then second latch positions and watch for anything happening. Then reverse by pulling the handle and restricting the latch movement. Remember to 'open' the lock by pulling the handle before you try to close the door.

    By doing this, you are isolating the lock mechanism from wiring problems caused by door movement.

    It could be the door wiring harness to body plugs too...

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    Default

    sorry mate, none of that makes any sense to me.

    I thought the light was controlled also by a push switch on the pillar, which when the door was closed pushed on the switch turning the light off, and when open let the push switch come out the way thus turning the light on, but cant find any such switch on the vectra like i can with my mk4 Astra.

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    Ex Vec-C Admin ed taylor's Avatar
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    Default

    No on the Vectra the "push button" so to speak is incorterated in the door mechanism, rather than how it was on your Astra.

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    Default

    anyone else any ideas, really need this sorted and would rather not pay a dealer megabucks to do it if i could do it myself.

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    Regular Member Robsey's Avatar
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    Default

    the long and the short is that the most probable fault is in the rear door lock mechanism...the switch gear detects the position of the lock.
    if this becomes mis-aligned then it can overshoot it's correct postion, and thus turn the interior lights on and off in the wrong positions.

    If you are a competent technician / engineer, then it needs the mechanism to be checked and repositioned / re-alligned.

    If in doubt, take it to an auto electrician or a clued up mechanic.

    better still, ask if there is a knowledgeable forum member in your area who could look at it and possibly fix it or diagnose the true nature of the fault.

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