My friend just bought a 1999 c-280, and he mentioned that a little wrench lights up on his dash when he starts it. He doesn't have the owners manual, so he can't define it. Is this the service light or something? Thanks.

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1989 300E 144K

It is probably due for service ie. oil and filter change. I believe it is called the Flexible Service Schedule or FSS. The car determines the length of time between servicing based on driving and operating conditions.

Yes, it is the service reminder. There is a reset procedure for it in the owner's manual. He can get a copy from M-B or ebay.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz

What they said. At first it will show the miles until service is due then will go off and show the regular display. If you ignore it then it stays on all the time.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra