Mercedes-Benz 500SEL Repair and Maintenance

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

Select your Mercedes-Benz 500SEL's year to get more detailed information:

Mercedes-Benz 500SEL Problems

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.

Tandem Hydraulic Pumps May Leak From Either Section

Some models have tandem hydraulic pumps—one section for power steering and the other for suspension adjustment. These pumps are prone to leakage from either section.

Window Regulator Failure is Common

One or more door windows may stop working due to a failed window regulator. Replacement of the failed regulator will be necessary to correct this concern.

See More Problems (30)

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

See More Questions (38)

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!

See More Reviews (2)