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
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
Will check the earth points and report back. will also spray WD40 and see what happens. Thanks for the help
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.
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.
