Mercedes-Benz 500SEL Repair and Maintenance

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

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.

Insulation Degrades on Engine Wiring Harness and Leaves Conductors Exposed

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

My car starts and runs but when car gets hot it wont start. (1 answer)

I have taking the car to different mechanics and they cannot find the issue. My car starts but when I drive it say an hour and gets hot, and turn it off, it will not start. I have to let it cool off to get back home. lol

Rear brakes problem, Third light works , but not the lower left/right (1 answer)

The third brake light works but not the left/right lower brake lights

Rear night lights will not come on when light switch is turned on. (1 answer)

Head light do work when turned on, just the rear light are off

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Mercedes-Benz 500SEL Reviews

I own the fabled 500sel w140, it is a smooth ride!
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.

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