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Problems for specific Mercedes-Benz 300SL years:

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Most reported Mercedes-Benz 300SL problems

 

Verified for the Mercedes-Benz 300SL

The electronic throttle assembly may suffer an electrical failure. It is often cheaper to send the valve to a service center for repair that to purchase a new part.

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Verified for the Mercedes-Benz 300SL
The part that attaches the distributor rotor to the camshaft can break; the starter will still crank, but the engine will not start.
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Verified for the Mercedes-Benz 300SL

The cooling system hoses may fail unexpectedly. The hoses can look good on the outside, but the rubber can degrade and erode on the inside. If not carefully checked, the hoses can burst at any time.

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Verified for the Mercedes-Benz 300SL

The lenses for head lights may become opaque (cloudy or hazy) as a result of sun exposure. This can reduce the effectiveness of the lights. Our technicians tell us plastic polishes can improve the clarity of the lenses, but replacement of the lamp housings is necessary to regain full intensity of the lights.

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Verified for the Mercedes-Benz 300SL

The emissions air injection pump can seize, causing a loud squealing noise followed by smoke from the drive belt. If the engine is not turned off, the belt will break, turning on the alternator/battery warning light.

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Verified for the Mercedes-Benz 300SL

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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Verified for the Mercedes-Benz 300SL

A worn steering dampening shock can cause a fluid leak at the front of the vehicle. If a leak is noted from the dampening shock, our technicians tell us that it should be replaced.

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Verified for the Mercedes-Benz 300SL
A knocking noise from the front end can be caused by cracked strut tower bushings.
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Verified for the Mercedes-Benz 300SL

Vehicles with automatic level control that ride harshly in the rear (no give in the suspension) may have one or both dampening actuators which have failed. It is commonly recommended the actuators be replaced in pairs.

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Verified for the Mercedes-Benz 300SL

The bushings for the shifter lever wear out to the point where they break and fall out. This causes excessive movement (loose feel) in the shifter lever and a clanging-type noise when changing gears.

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Verified for the Mercedes-Benz 300SL

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.

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Verified for the Mercedes-Benz 300SL

The climate control system can fail or perform erratically due to internal problems with the climate control button electrical contacts. Replacement of the climate control assembly is commonly required to correct this problem.

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Verified for the Mercedes-Benz 300SL

The head lamp wipers are easily damaged, especially by automatic car washes.

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Verified for the Mercedes-Benz 300SL

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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