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Problems for specific Mercedes-Benz S500 years:

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Newest reported Mercedes-Benz S500 problems

 

Verified for the Mercedes-Benz S500

The rubber bond in the harmonic balancer can decay, which causes the balancer to move and work its way toward the timing cover. If the balancer comes into contact with the timing cover while the engine is running, it will fracture and damage the cover and potentially other surrounding parts. The harmonic balancer should be inspected at every service.

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Verified for the Mercedes-Benz S500

The electrical connector at the automatic transmission may leak fluid. Over time leaking fluid could migrate through the wiring harness and damage the transmission control module. If that happens a new harness and control module may be necessary to correct the problem.

8 Reports
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Verified for the Mercedes-Benz S500

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.

6 Reports
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Verified for the Mercedes-Benz S500

CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.

24 Reports
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Verified for the Mercedes-Benz S500

Problems with the pneumatic system can cause closing assist and door lock issues.

21 Reports
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Verified for the Mercedes-Benz S500

A coolant leak may develop form the Radiator due to degradation of its plastic components. Replacement of the failed radiator will be necessary.

6 Reports
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Verified for the Mercedes-Benz S500

High mileage vehicles may develop a leak from one or more of the transmission oil seals.

7 Reports
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Verified for the Mercedes-Benz S500

A fluid leak from the front of the vehicle may be a result of a worn steering dampening shock. Our technicians tell us that if a leak is noted from the dampening shock it should be replaced.

6 Reports
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Verified for the Mercedes-Benz S500

The relay which turns the airmatic suspension pump on may fail causing the pump to run continuously. This can result in failure of the pump motor or a dead battery as the pump motor will continue to run after the car is turned off. Also, Worn airmatic pump mount bushings can causes noises in the front axle while driving on bumpy roads or a buzzing noise while the pump is running.

18 Reports
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Verified for the Mercedes-Benz S500

As brake fluid becomes dirty over time, it can cause a failure of the anti-lock brake system (ABS) modulator assembly. Our technicians recommend a complete brake system flush every two years to help prevent this issue.

15 Reports
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Verified for the Mercedes-Benz S500

A cracked or broken heater core outlet housing can cause a coolant leak near the bulkhead (firewall). Our technicians remind us that coolant leaks should be repaired in order to avoid overheating the engine due to coolant loss.

9 Reports
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Verified for the Mercedes-Benz S500

One or more of the following steering linkage components may wear prematurely;  tie rod ends, drag link, or idler arm. Our technicians remind us the wheel alignment should be checked and adjusted if any of these items are replaced.

8 Reports
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Verified for the Mercedes-Benz S500

Internal and External engine oil & coolant leaks can develop from the head gasket and/or timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix which can result in severe engine damage.

6 Reports
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Verified for the Mercedes-Benz S500

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

1 Report
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Verified for the Mercedes-Benz S500

The brakes may begin to squeak at about the 50 percent wear point. This is due to the size and material used for the brake pads and rotors.  The brake rotor surfaces become uneven, causing a lip to form at the outer edge. This will generally require replacement of the rotors when the pads are worn (pad life varies depending on driving style and terrain).

19 Reports
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