Question about 1992 Mercedes-Benz 190

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Check engine light on

I am in the process of buying a 1992 Mercedes 300 E. I have only had the car 3 days and have no service records or manual for that year. The car has performed well until today when the check engine light came on. As I am unfamiliar with this car, I am concerned that it is serious and possibly costly. I would appreciate any advice.

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  • 21 Answers

Disconnect negative battery cable for 15 minutes, then replace. This will re-boot the computer. See if light comes back on. I assume all fluids have been checked?

Posted on May 25, 2009

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