Mercedes-Benz 300E Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz 300E

Mercedes-Benz 300E Problems

Failure of EHA valve may cause fuel/engine problems
Fuel leaks, erratic or rough engine operation, and fuel economy issues can be caused by the failure of a fuel system component called the EHA (electro-hydraulic actuator) valve.
High Usage Vehicles May Experience Ignition Lock and Tumbler Failures

Due to wear, high usage vehicles can experience ignition lock and tumbler failures. The ignition lock cylinder will generally require replacement to correct this concern.

Engine Problems Due to Distributor Cap and Rotor, Bad Ignition Wires, or Valve Cover Gasket Leaks

A rough running motor or lack of power can be caused by a failed distributor cap or rotor, ignition wires (or their resistors), or valve cover gasket leaks. If the valve cover gasket leaks, oil can pool where the ignition wire resistor connects to the spark plug. The resistor can fail and the spark plug may not fire because of a short circuit through the oil.

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Mercedes-Benz 300E Questions

Low beams not working? (1 answer)

how to clean cruise control unit (1 answer)

cruise control wont maintain speed

What might cause stalling while idling ? (1 answer)

Starts with some delay initially and has stalled on highway when traffic ls moving slowly or at a stop and go condition

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Mercedes-Benz 300E Reviews

Everything is great except when taking off at a dead stop, it tends to feel like it's not gonna make it then, wham, she takes off barks 2nd gear and goes. And that is with a striaght 6 cyl
Having problems with it starting in the morning when it is cold...
I have this Mercedes-Benz 1990 3000E all of sudden out of no were, the car was on park went to put in reverse the park car would not move! Had no signs of tranny problems at all! No leaks at all! car runs awesome until this! mileage is 168000! What could this be?

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