My guess is a fast turn signal means a bulb burned out. Thing is every light looks fine when testing. One of the rear license plate bulbs was out, I replaced it but the fast blinker remained.

Any advice on where to start? Is this most likely a burned out bulb? Is there something else to check? Any tips on checking the lights, in the rear I don't want to ruin any trim.

usually a fast blinker is a burned out bulb. how about the indicators
on the dash panel? had that happen on one vehicle and also had the
problem being the flasher unit itself.
charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Turn on the four way flasher and walk around the car. You should spot a dimmer bulb or inop bulb that way. could be a poor ground or faulty bulb.

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81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.

The side that blinks faster will indicate which side of the car to look for the bulb. Don't forget to check if all wiring is connected. I didn't have a burnt bulb, but I forgot to connect the plug for the tail light (after some tinkering), and true enough it told me something was amiss on the left side, which was the unplugged 6 pin connector for the tail light on the same side the turn indicator blinked faster.

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