Mercedes-Benz 300SL Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz 300SL

Mercedes-Benz 300SL Problems

Leaks at Compressor, Hose Manifold, or Evaporator Core May Cause Poor AC Performance

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.

Cracked Driveshaft Flex Discs May Cause Driveshaft Movement/Vibration

A vibration felt through the center floor of the vehicle can be caused by cracked and/or shredded driveshaft flex discs, resulting in excessive driveshaft movement. If not repaired, damage to the driveshaft center support bearing, transmission, or differential can occur.

Premature Tire Wear Due to Cracked Lower Control Arm Bushings

The lower control arm bushings can wear and crack, leading to irregular and premature tire wear. Worn Ball joints can also cause similar tire wear problems. I some cases it may be necessary to replace the lower control arm, including bushings & ball joint to correct this concern.

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Mercedes-Benz 300SL Questions

Where are the fuses located (2 answers)

1991 300 sl has spark ignition fuel compression is in time cranks but wont start (1 answer)

was running great parked for a week would not start. replaced distributor cap and rotor, cam and crank position sensors. ecm and ezl checked all fuses has correct fuel pressure showed code for oxygen sensor which was also replaced along with ignition switch. mechanic has gave up on vehicle

How do I change the check engine light (1 answer)

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Mercedes-Benz 300SL Reviews

air conditioner not cold blowing cool
my 1991 300 sl was experiencing symptoms of running fine when cold, and breaking up and stalling when engine got warm. changed crank sensor, no fix, still getting stuck on many occasions. car wold only start when it cooled off. thought it had to do with some kind of temperature sensor..changed fuel filter, and the problem went away. driven hundreds of miles trouble free now..car often sits for ...
My 1991 SL mercedes is a beautiful car. When it sits for a long period, once driven, it cuts off. The car will start after sitting a couple of hours. Restart car and drives fine.

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