Where can the fault be?

Discussion in 'Electronics' started by goldenii68, Aug 7, 2011.

  1. goldenii68

    goldenii68 Hardcore MB Enthusiast

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    Help!!

    My bulb failure indicator lamp came on last night, I have checked all the bulbs and all seem to be working ok, it also came on today when I had no lights on, all 3 brake lights appear to be working, the light doesn't come when I start the car, it comes on only when I'm driving so 'where can the fault be ?':dk:
     
  2. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    Number plate bulbs?
     
  3. OP
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    I checked them too Olly:(
     
  4. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    Wait until the warning appears again and check all bulbs. Remember the rear sidelights have two per side.
     
  5. OP
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    Will do, if its not the rear sidelights, where next to check?
     
  6. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    Check the correct wattage of all the bulbs. It will probably be the rear bulbs though.
     
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    I forgot to say I've got led sidelights and numberplate lights, both sets appear to be working ok, they are the error free canbus ones, you dont think however ......?
     
  8. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    Maybe?
     
  9. rascalmaster

    rascalmaster Hardcore MB Enthusiast

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  10. OP
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    Even if they are working and had them for about 5-6 months ( and made sure they were the canbus error free ones) and they were off when the light came on today .........?
     
    Last edited: Aug 7, 2011
  11. OP
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    Oi, this is serious, it weeks to sort out my ESP/BAS light and open walet surgery to boot, I have precious little hair to pull as it is, I can't bear any warning lights coming up:eek: (its not a dig just lighthearted banter:D)
     
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  12. rascalmaster

    rascalmaster Hardcore MB Enthusiast

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    pmsl

    Hope you get everything sorted mate!
     
  13. OP
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    Me too, nothing more annoying than a niggle in your pride and joy you can't sort quickly! :wallbash:
     
  14. GP801

    GP801 Hardcore MB Enthusiast

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    Bulb does not have to have blown. The system will pick up a bulb in imminent danger of failing. I think it measures change in resistance. One is probably about to go - usually a rear sidelight or brake light.
     
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    goldenii68

    goldenii68 Hardcore MB Enthusiast

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    Wow! In my c200 when that light came up, it was normally a brake light one that had failed, best get some of both types soon :thumb:
     
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