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Mercedes-Benz 420SEL Repair and Maintenance Costs

A guide to repairs, service, and maintenance costs for your Mercedes-Benz 420SEL

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The national average repair and maintenance cost for a Mercedes-Benz 420SEL is between $802 and $980 per year. Repair and maintenance costs vary depending on age, mileage, location and service provider.

Mercedes-Benz Repair Estimates
Car
Service
Price
1990 Mercedes-Benz 420SEL Location: Both Sides
Ball Joint Replacement - Upper
$784 - $1211
1990 Mercedes-Benz 420SEL Location: One Side
Wheel Bearing Replacement - Front
$317 - $416
1990 Mercedes-Benz 420SEL Location: Both Sides
Exhaust Manifold Gasket Replacement
$749 - $954
1990 Mercedes-Benz 420SEL Location: Upper
Radiator Hose Replacement
$120 - $162
1990 Mercedes-Benz 420SEL
Valve Cover Gasket Replacement
$106 - $207

Mercedes-Benz 420SEL Problems

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.

Incorrect Idle Speed Due to Stuck Idle Air Compensator

It is not uncommon for the idle air compensator to get stuck in one position, resulting in the engine idle speed (rpm) being too high or too low. Replacement of the failed compensator may be necessary to correct this concern.

AC Not Cold Due to Leaking Hose

A refrigerant leak may develop from one or more of the AC hoses. Proper leak detection procedures should be followed if refrigerant loss in encountered. Replacement of any leaking hoses will we required to restore proper AC operation.

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Mercedes-Benz 420SEL Reviews

great car!! still a head turner after almost 20years.. have owned my 91 420sel now for 5 years and still performs, looks, handles and drives like brand new with only 150k...maintenance can be costly..GREAT Highway cruiser..no cup holders :( .. last of the big(long) dinosaurs..
THE HANDLING REALLY NICE THE VENT DOES NOT OPENING TOOK ME FOR AWHILE TO GET AC ON ALMOST 1991 S CLASS HAVING PROBLEM WITH CRUISE CONTROL SWITCH IT'S DOESN'T WORKING SOME TIMES DOES.I'VE GOT BAD FUEL PUMP ON BOTH LEAKING TO REPLACED COST ME $500.000.
what other automobile would you even consider that has 150k miles and still cost $5k or better..and get a consistent thumbs up!

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