1990 Mercedes-Benz 300SEL Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 300SEL

1990 Mercedes-Benz 300SEL Problems

"No start" Caused by Failed Fuel Pump/Relay

The fuel pump and/or fuel pump relay can fail, causing the car to crank over but not start. Proper diagnoses will be necessary to confirm if the pump or relay is at fault.

Expansion valve may get stuck
The expansion valve can get stuck and is difficult to replace.
Leaks Develop at Differential Seals/Cover on High Mileage/Older Vehicles

Leaks may develop from the differential seals and/or cover on older or high mileage vehicles. Our technicians recommend a complete reseal of the differential unit when these leaks are addressed.

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