E46 2002 325 Rear light fault

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  1. E46 2002 325 Rear light fault 
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    When I start up my car (2002 e46 325 sport) the warning light saying the rear offside light has a fault lights up but none of the bulbs are out, I have swaped all the bulbs and cleaned all the contacts on that side including the ones on the boot and number plate but it still comes up fault, but not all the time sometimes I start it up and there is no fault. I did notice tonight when I was opening the garage door that the cluster on the offside is not as bright as on the near side, I did try swapping the bulbs from side to side but no differance. Any ideas?
     
     

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    Have you checked the wattage of the bulbs out?
     
     

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    That's a good point Ronnie but I'd expect there to have been a difference when they were swapped from side to side.

    What about removing the cluster and checking the bulb is making good contact? If it seems there is slight movement or dirty contacts between bulb and bulb holder then the bulb may be breaking contact on occasions or not getting full current to the bulb therefore not emiting as much light as the otherside.

    May be worth replacing the bulb completely with another new bulb?

    Would that be a possibility? It's just a thought.
     
     

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    Also how many rear sidelights are illuminated on yours?
     
     

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    Quote Originally Posted by A20 RYM View Post
    That's a good point Ronnie but I'd expect there to have been a difference when they were swapped from side to side.

    What about removing the cluster and checking the bulb is making good contact? If it seems there is slight movement or dirty contacts between bulb and bulb holder then the bulb may be breaking contact on occasions or not getting full current to the bulb therefore not emiting as much light as the otherside.

    May be worth replacing the bulb completely with another new bulb?

    Would that be a possibility? It's just a thought.
    Good advice here.
    Replace the bulbs and fully clean the contacts in the bulb tray using IPA or similiar

    I would also advise checking there is no damage to the wiring that leads up to the bulb tray (behind the boot carpet_)
     
     

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  9. The Following User Says Thank You to Ronnie For This Useful Post:

    davymole (07-06-2010)

  10. e46 False Rear Light Warning 
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    Guys,

    I could'nt wait to get on here and tell you about my solution to a what has been a nightmare problem.

    I've had false readings from my OBC saying that i have rear lights out, after checking them and checking them it appeared that the fault was the earth connection, it had basically burnt out. Having visited the BMW main dealer & Independent Specialist's who by the way arn't all sweetness and light !!!! the general consensus was that i required a whole new lighting loom !!!
    Not being electrically minded i moaned a bit before booking the car in to the "specialist" only to find out that the "specialist" was unable to resolve.
    From here i even thought of selling the car as the light display seems to be getting more and more in my face.
    On the way home i noticed a small back street auto electricans, i nipped him told him the problem and within 10 minutes he had the lights off, repaired and resolved for the mighty sum of £15 !!!! keep your eyes pealed theres some proper cowboys out there.
     
     

  11. The Following User Says Thank You to R8 OBG For This Useful Post:

    davymole (07-06-2010)

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    This is usually what happens.....

     
     

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    Very useful R8, especially the photo.
    I have same problem. What colour is earth wire, as I might try to do it myself
     
     

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    Quote Originally Posted by stanlee View Post
    Very useful R8, especially the photo.
    I have same problem. What colour is earth wire, as I might try to do it myself
    It's brown, you will be able to tell from comparing your plug with the one in the picture anyway
     
     

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