1990 Mercedes-Benz 500SL Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 500SL

No_car_image
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
Get a Repair Estimate For Your 1990 Mercedes-Benz 500SL
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
Repair Estimates

Never overpay. Check prices with our estimator

1990 Mercedes-Benz 500SL
$
123
to $
203
1990 Mercedes-Benz 500SL
$
450
to $
719
1990 Mercedes-Benz 500SL
$
2,886
to $
5,502
1990 Mercedes-Benz 500SL
$
108
to $
138
1990 Mercedes-Benz 500SL
$
108
to $
138

1990 Mercedes-Benz 500SL 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.

Emissions-related ports in cylinder head may clog

Ports in the cylinder head related to the emissions air injection and EGR systems can clog; the cylinder head should be removed and the ports cleaned.

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.

See More Problems (26)

1990 Mercedes-Benz 500SL Questions

I have a 1976 450-SL;what might be the problem causing a steam &antifreeze leak? (1 answer)

I have a 1976 450-SL that came out of 7yr storage. The oil, gas, plugs, antifreeze looked great. I hooked up a battery and it started right up. I let it run 5 or so times, 30min at a time each week. The last time I started it up I forgot I left it running say an hour or so. When I remembered I fo...

Approx. cost to replace drive belt and drive belt tensioner (1 answer)

starting to squeak on acceleration. tension unit is broken

My car now is hard to start now when u missed the first time...too many cranks (1 answer)

I jet don't trst that place where I went...my only complaint then was the hesitation so they fix a gasket that cost me around $2,000 and 2 distributor caps and EH which costed me $348.00 alone

See More Questions (24)

1990 Mercedes-Benz 500SL Recalls

Recall 93V067000
DURING THE REMOVAL AND INSTALLATION OF THE AIR FILTER HOUSING WHILE SERVICING THE VEHICLE, IT IS POSSIBLE TO MISROUTE THE PREFORMED VACUUM HOSE AND DAMAGE THE CHECK VALVE IN THE VACUUM HOSE. IF THE CHECK VALVE IS DAMAGED, LOSS OF SUFFICIENT BRAKE POWER ASSIST WILL OCCUR.

See More Recalls (1)