Mercedes-Benz 400SE Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz 400SE

Mercedes-Benz 400SE Problems

Coolant Leak Due to Cracked/Broken Heater Core Outlet Housing

A cracked or broken heater core outlet housing can cause a coolant leak near the bulkhead (firewall). Our technicians remind us that coolant leaks should be repaired in order to avoid overheating the engine due to coolant loss.

Faulty Mass Air Flow Sensor Causing Erratic Engine Operation and Poor Fuel Economy

A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.

Premature Tire Wear Due to Cracked Lower Control Arm Bushings

The lower control arm bushings can wear and crack, leading to irregular and premature tire wear. Worn Ball joints can also cause similar tire wear problems. I some cases it may be necessary to replace the lower control arm, including bushings & ball joint to correct this concern.

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Mercedes-Benz 400SE Questions

Going up a hill with the accelerator to the floor my car struggles? (1 answer)

After finally reaching level ground it then takes off. In August I had work done on the front end. This started occurring after that.

Going up a hill with the accelerator to the floor my car struggles? (1 answer)

After finally reaching level ground it then takes off.

how is the drivers door panel removed (1 answer)

how is the driver door panel removed

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