Did this occur after installing the fog lamps?

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.

ps2cho, it's odd that the Lamp Out warning light illuminates as soon as you start the engine unless you have your foot on the brake pedal. The warning light normally illuminates when braking if one of the brake lamps (including the rear deck) is burnt out, or when you turn the headlight switch and one of the driving lights/head lights is burnt out.

Check the base of all lamps in both rear clusters. Sometimes a portion of the base will flat-spot and cause problems with the Lamp Out warning light. Be sure to use Osram Sylvania replacement lamps of the correct wattage. Pep Boys sells Osram Sylvania replacement lamps in our area, but other automotive stores probably sell them too.

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Fred Hoelzle