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Boot lights not working

Discussion in 'A4/S4 forum(B5 Chassis)' started by jgttdi, Feb 3, 2013.

  1. jgttdi
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    jgttdi Member

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    Hi everyone, my A4 saloon boot lights are not working, there is two lights on the boot and I have changed the bulbs but not working. I have also checked the fuses but the fuse for the interior lights is ok and the rest of the interior lights are working just not the boot ones. I have also locked the car and unlocked it on the remote with the boot open but still no joy.

    Any help would be great.

    Thanks J
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  2. MaverickTDi
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    MaverickTDi Member

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    Try unscrewing the bulb holders from the outside of the car, pull forward and make sure wire connections aren't broken, failing that remove the plastic trim on the inside of the boot, where you would access the wiper motor, and look to see if the electrical connector is inserted fully and/or damaged. For both lights to not be working is unlikely and if you have changed both bulbs and checked fuse I'd say it's something common to them both like connection issue.

    Hope this helps.
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  3. jgttdi
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    jgttdi Member

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    Thanks for the reply but it's the two interior bulb holders in the boot itself, I have checked the connections onto the holders and they look ok, is it possible that theres a wire broken that powers both the holders? Or the boot latch is faulty not recognising that the boot is open causing the lights to stay off?

    Thanks again
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  4. MaverickTDi
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    MaverickTDi Member

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    I do apologise, what a biff! However, having had time to think about your problem made me realise that my boot light doesn't work either, but I played around with the switch on the light panel itself and it worked, may sound a stupid suggestion, have you tried that? I'm not 100% what tells the light to come on, could be the boot latch?
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  5. jgttdi
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    jgttdi Member

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    Boot lights still not working, its the lights inside the boot not the number plate lights, any ideas?

    Thanks J
    #5
  6. Arrkon
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    Arrkon Midlands regional Moderator

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    Check the switch on the inside of the boot latch. they quite often fail. :)
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  7. spartacus 68
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    spartacus 68 Member

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    Micro switch in boot lock? Got the same issue with my Avant. Bulb works fine when interchanged.

    Had similar issue with door and puddle lights not coming on and traced that to micro switch in passenger door. Quick clean and refit (stripping out door card was a bit of a bu**er) and hey presto... lights!

    A multimeter is useful for this job if you haven't got one. :yes:
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  8. jgttdi
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    jgttdi Member

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    Right so I have stripped the boot lid down and the micro switch for the boot lock and that works ok, so looked at the terminals on the micro switch on the boot latch and they were slightly corroded so cleaned them up and still no joy??
    Last edited: Mar 1, 2013
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  9. spartacus 68
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    spartacus 68 Member

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    Hmm? :readit:

    Not sure if your car has a comfort control module located under the passenger seat? Read a few posts about puddle and door lights not coming on and was traced to this unit?

    If you have a multimeter - would be interested to know what reading is on light connections or simply '0.0'
    #9
  10. spartacus 68
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    spartacus 68 Member

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    Did this job on my own car today. Stripped the rear trim out, then removed the lock and the activator mechanism (barrel lock). Sprayed everything with WD40, let it soak in, dried off, the a little grease on the mechanism and reinstalled. Check wiring connections for any corrosion. Lights now work.
    #10
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  11. jgttdi
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    jgttdi Member

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    The boot lights now work :yahoo: I removed the boot latch again and stripped it right down, I removed the micro switch and found a small piece of plastic fell out, I cleaned the micro switch with contact cleaner and rebuild, the boot lights now work!

    I think the piece of plastic that fell out must of been stopping the switch contacting the latch.

    Anyway I'm happy now as the lights work :rockwoot:
    #11
  12. TrisLC
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    TrisLC Member

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    Ive noticed mine are a little temperamental so I give this a go myself,

    Thanks and congrats
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