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Windshield wipers don't work
There are a couple possibilities. The electric wiper motor has failed or blew a fuse, or the problem is in the wiper transmission linkage. When the plastic parts of the transmission are worn, the linkage can come apart. Grab a...
Automatic door locking system issue
A Mercedes of your model year use a combination electric/vacuum door lock system. The fuse was for the electrically powered vacuum pump only. The rest of system uses rubber vacuum lines which leak when old. You can replace them one...
Problems with shifting from neutral to reverse
It sounds like the shifter linkage from the shift lever to the transmission has become worn, or is out-of-adjustment for some other reason. Have a trained professional, like one from YourMechanic, inspect the shifting trouble and adjust or repair the...
Loud buzzing before the engine cranks
This sounds like the starter solenoid - the part of the starter assembly which acts as a high-current power relay for the starter motor - has worn or burned contacts. This makes it tougher to get adequate power to the...
Starting problems when the engine warms up
It's possible you have a leaking fuel injector - which is losing the residual fuel pressure in the fuel line. The fuel leaks into the cylinder, but leaves you with a partially filled fuel line. Diesel fuel injectors, when working...
Preglow indicator light on
Your car has a diesel engine. Diesel engines have no spark plugs, they rely on ultra high compression of the fuel, which is injected at precisely the highest air pressure in the cylinder, to ignite on it's own based on...

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