Mercedes-Benz 500SEL Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz 500SEL

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Mercedes-Benz 500SEL 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.

Electrical Issues Due to Degraded Engine Wiring Harness

The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.

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.

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Mercedes-Benz 500SEL Questions

Engine lowers and I must press accelerator pedal almost to floor so I can pull (1 answer)

over. Shut off engine for about 60 to 90 seconds. Turn engine on and it returns to full power. Used to do this once or twice a year. Now it can be 2 or 3 times a day.
MB told me to follow this procedure in 1995.

Engine goes into limp mode and I must push the accelerator almost to the floor (1 answer)

I pull to the side of the road and shut the engine off for about 1 or 2 minutes and it restarts. What is the cause? I want it fixed. Used to happen once or twice a year. Now it happens about 3 times within a 30 mile, or less, drive.

How do i get into my 500SEL? My doors are stuck. (1 answer)

I have had my Mercedes for over 3 years and i have had few problems in the past with the doors but not like i am now. I have tried almost everything i know to get inside the car, nothin seems to be working. I have also changed the battery a few times. Any feed back will be helpful

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Mercedes-Benz 500SEL Reviews

My 1992 SEL 500 is a fantastic car rides and handles super nice.. Gas milige is terible.. but still love my car..I want to put it in storage.. toylex you just cant beat mercedez! so stop trying.
I own the fabled 500sel w140, it is a smooth ride!

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