W202 Rear Indicator

Discussion in 'Electronics' started by Bunny55, Sep 7, 2011.

  1. Bunny55

    Bunny55 Member

    Messages:
    37
    Joined:
    Aug 30, 2006
    Location:
    Somerset
    Car:
    W202 Saloon
    If I had any hair left, this problem would have me pulling it out.

    Year 2000 W202 saloon.

    Nearside rear indicator is intermittent (no jokes please).

    I replaced the bulb and it lasted a day.

    Now to fix the problem I remove bulb, refit bulb, disconnect wiring from lamp cluster, reconnect and the indicator will work for a day or so and then pack up.

    I've read other posts about cleaning relays (where is it?) and indicator stalk being faulty, I don't think it's that as it's only the rear nearside bulb.

    If it's a dodgy earth, where is the earth bolted?

    Thanks

    Graham
     
  2. horgantrevor

    horgantrevor MB Enthusiast

    Messages:
    1,902
    Joined:
    Jan 14, 2011
    Car:
    w202 c43 & w210 E220 CDI estate w219 W221
    ok the relay is under bonnet the box above the fuses

    but it sounds like a bad connection ie;rust i would spray all connection with contact cleaner and then a light spray of 3 in 1 spray

    also maybe bad earth as you say ,the earth wires are brown in the mercedes w202 if you remove the left arch trim you will see a screw head with lots of brown wires at that point i would clean it near the rear arch in boot this can get rusty in some w202 that have retractable radio antenna but your should not a face lift but check
     
  3. OP
    OP
    Bunny55

    Bunny55 Member

    Messages:
    37
    Joined:
    Aug 30, 2006
    Location:
    Somerset
    Car:
    W202 Saloon
    Will check the earth points and report back.

    will also spray WD40 and see what happens.

    Thanks for the help
     
  4. Stratman

    Stratman MB Enthusiast

    Messages:
    4,708
    Joined:
    Jun 15, 2003
    Location:
    Sunbury
    Car:
    W203 C200 CDI '04Estate
    If the bulb has ever been replaced that could be the problem, as some bulbs fit better than others. The 'own brand' from a large orange motoring chain store have been known to be a little loose in the socket and cause all sorts of problems, including the melting of headlamp fittings.
     
  5. KillerHERTZ

    KillerHERTZ Administrator Staff Member

    Messages:
    16,999
    Joined:
    May 21, 2003
    Location:
    Cambridge
    Car:
    CLS63 AMG
    I had a similar problem a few years ago and my garage discovered a bad earth point.
     
  6. OP
    OP
    Bunny55

    Bunny55 Member

    Messages:
    37
    Joined:
    Aug 30, 2006
    Location:
    Somerset
    Car:
    W202 Saloon
    After checking the earth connection (fine) I removed the light cluster, took all the bulbs out, gave a dose of WD40, let it all dry, reassemble and now 3 days without a problem.

    Result, thank you.
     
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