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Thread: Automatic Dimming interior rear-view mirror

  1. #1
    Join Date
    Jun 2009
    Location
    Canberra
    Posts
    97

    Automatic Dimming interior rear-view mirror

    Hi All,

    Mine automatic dimming interior rear-view mirror seems does not work sometimes. I mean, sometimes I can see the head light of the rear car is green shown on the mirror but sometimes does not and as normal bright.

    When I was picking up my car, the dealer told me that I can adjust the level of dimming. How can I adjust that? I can't find such information from the user manual.

    Many Thanks
    Platin Grey Skoda Octavia Scout Premium

  2. #2
    Join Date
    Jul 2005
    Location
    Victoria
    Posts
    998
    if it was available it should be in the manual. i thought the mirror does it on its own depending upon how close the car is behind you.
    1974 1300 Beetle, 1997 Golf GL, 2003 New Beetle Cabrio, 2014 Audi A4 quattro

  3. #3
    Join Date
    Aug 2009
    Location
    Brisbane, QLD
    Posts
    39
    the mirror is just on or off.

    Mine has never let normal light through. Take it back to the service department as it's warranty.

    _Dru.
    <VW Passat R36 Sedan>

  4. #4
    Join Date
    Jan 2009
    Location
    NSW Australia
    Posts
    270
    I've had that happen a few times on mine.
    Generally I just turn it off then on, then give it a few minutes and it progressively darkens down.

  5. #5
    Join Date
    Jun 2009
    Location
    somewhere
    Posts
    30
    hmm mine seems to work fine, maybe take it to the dealer to have a look at it
    Volkswagen Golf MK7 R Wagon Wolfsburg Edition Lapiz Blue

  6. #6
    Join Date
    Jun 2009
    Location
    Canberra
    Posts
    97
    Thread Starter
    well, I have tested it today under sunshine.

    I put my finger at back sensor (facing windscreen), the mirror does dim. However, if I covered my finger at front sensor (facing me), the mirror seems does not dim. Is that normal?
    Platin Grey Skoda Octavia Scout Premium

  7. #7
    Join Date
    Jul 2009
    Location
    Sydney, NSW
    Posts
    203
    Quote Originally Posted by ox518 View Post
    well, I have tested it today under sunshine.

    I put my finger at back sensor (facing windscreen), the mirror does dim. However, if I covered my finger at front sensor (facing me), the mirror seems does not dim. Is that normal?
    Yes. The sensor facing the windscreen detects whether there is daylight or not. By covering it, the mirror thought it was night time therefore automatically dimmed the mirror a little. The sensor facing you senses whether there is bright light or not -- ie:the headlights from the cars behind are reflecting and shining into your eyes. When it senses the extra light it dims the mirror further. If you cover the windscreen side with your finger and shine a torch onto the mirror side sensor facing you, you should be able to see what I mean.

  8. #8
    Join Date
    Jun 2009
    Location
    Canberra
    Posts
    97
    Thread Starter
    After sunset I went out had a driving. I think it still does not work 100%.

    If I covering the back sensor, the mirror will be darker after a few seconds. But it will back to normal after a few seconds being darker.

    Maybe need to take to dealer have a look.
    Platin Grey Skoda Octavia Scout Premium

  9. #9
    Join Date
    Mar 2007
    Location
    Hobart
    Posts
    382
    Quote Originally Posted by ox518 View Post
    .

    Maybe need to take to dealer have a look.
    Good luck. Mine has never worked - yet the dealer tells me it's normal. Hence I've disable the bl**dy thing.
    2018 Golf GTI, Manual - gone.
    2017 Golf 110tsi Trendline, manual (gone - gladly)
    2007 Golf GTI, Manual, (gone - sadly)
    1978 Golf GLS; 1972 Superbug, (memories)

  10. #10
    Join Date
    Jun 2007
    Location
    Sydney
    Posts
    540

    Quote Originally Posted by ox518 View Post
    After sunset I went out had a driving. I think it still does not work 100%.

    If I covering the back sensor, the mirror will be darker after a few seconds. But it will back to normal after a few seconds being darker.

    Maybe need to take to dealer have a look.
    If you put your finger over it and it goes darker its working. It doesn't work in the daytime unless its overcast or the light behind you is extremely bright. It goes back to normal when you tested it because you're letting more ambient light in bt taking your finger off - that' s normal.
    Check the angle of your mirror ? clean the sensor?

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