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

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

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.

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 500SEL Questions

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

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

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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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