Symptoms:

1. When headlamps are ON, and I press the brake pedal, SOMETIMES (but not always) the exterior lamp failure indicator comes on and stays on.

2. If I turn off the headlamps, the indicator remains on.

3. If I turn off the car and restart, the indicator will be off.

Even though all three brake lamps were working, I replaced them (I know that the indicator can come on when a lamp is about the to fail). But didn't help.

Any thoughts as to how to troubleshoot this? Other bulbs I could try replacing? I hate to pay someone to do this....I'd rather just put black tape over the indicator than pay even an half hour labor. But it is mildly annoying.

Thanks!

PS, this is on my 300D.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife