Mercedes-Benz 300SE Repair and Maintenance

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

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Mercedes-Benz 300SE Problems

Engine Oil and Coolant Leaks Resulting in Fulid Intermix

Internal and External engine oil & coolant leaks can develop from the head gasket and/or timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix which can result in severe engine damage.

Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor

Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.

Poor AC Performance Due to Refrigerant Loss

A refrigerant leak may develop from one or more of the following AC components: AC compressor, hose manifold for the compressor, or the evaporator core. The loss of refrigerant can cause poor AC performance. Our technicians tell us that proper leak diagnoses should be performed in order to determine the cause of any refrigerant loss.

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Mercedes-Benz 300SE Questions

How to replace the radio? (1 answer)

I need to replace the radio without messing the car up.

My MB is a 1988 300se with 14K miles .when timing belt needs replacement? (2 answers)

My compressor is not engaging (1 answer)

I changed the blower motor an resistor now my compressor want engage but it was before i changed out the part an no fuses are blown how to get it to engage again.

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Mercedes-Benz 300SE Reviews

I love my Mercedes Benz SE 300. The only problem i had are with the window regulators (Front Passenger, Rear Passenger). They was both working but didn't work with the one touch option because the gears was strip. mjg429mach1@yahoo.com Richmond,VA
Love this car, I have owned many cars over the past 45 years.This one with the exception of a few small problems has been the best. 193,000 miles, still running strong,looking great, and getting compliments.no one believes the age and the comfort is beyond compare.I'm sold on M.B.
Car is garbage. Wiring harness falls apart. All of them need to be given, not sold, to scrap yards.

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