Now that I've slowly but surely solved issues with my son's college car, it's time to tackle this nagging problem that we've had from the day we bought the car 6 months go. (I even have this issue with my '91 300sl- still on my to-do list).

When I open the driver's door to get in, the interior light doesn't come on. All the other doors turn their respective interior lights on. I've already swapped door plunger sensors with the passenger side, but still the same issue.

I'm thinking this is a common fault. Because of the number of times that the driver's door is opened, some part must be in need of repair.

What is the cause and how do I fix this?

Thanks.

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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio