Problems for specific Mercedes-Benz C240 4MATIC years:

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Newest reported 2003 Mercedes-Benz C240 4MATIC problems

 

Verified for the Mercedes-Benz C240 4MATIC

Catalytic converter failure is common and may cause a Check Engine Light to illuminate.

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Verified for the Mercedes-Benz C240 4MATIC

Bad spark plug wires can cause misfires; the Check Engine Light may illuminate.

3 Reports
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Verified for the Mercedes-Benz C240 4MATIC

The mass air flow (MAF) sensor tends to fail. The engine air filter should be replaced when the mass air flow sensor is replaced; a dirty filter can allow debris to damage the new sensor.

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Verified for the Mercedes-Benz C240 4MATIC

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance. Communicating these specific symptoms to your technician can save diagnostic time.

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Verified for the Mercedes-Benz C240 4MATIC

Irregular and premature tire wear can be caused by the front thrust link bushings cracking and causing excessive movement in the suspension. The thrust link bushings are fluid-filled (to help reduce vibration), so if they crack, they will leak oil.

4 Reports
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Verified for the Mercedes-Benz C240 4MATIC

The heating, ventilation and AC (HVAC) heater box is susceptible to mildew buildup. This can result in a musty odor from the HVAC system, most noticeable when the system is first turned on.

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Verified for the Mercedes-Benz C240 4MATIC

An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the front of the engine.

3 Reports
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Verified for the Mercedes-Benz C240 4MATIC

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.

3 Reports
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Verified for the Mercedes-Benz C240 4MATIC

The electrical connector at the automatic transmission may leak fluid into the wiring harness. If not repaired, the oil will migrate through the wiring harness and damage the transmission control module. A new harness and control module may be necessary to correct this problem.

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Verified for the Mercedes-Benz C240 4MATIC

It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years in order to help prevent this problem.

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Verified for the Mercedes-Benz C240 4MATIC

A repetitive clicking noise from behind the center area of the dash panel is usually caused by a broken stepper motor actuating arm. The actuating arm controls the direction of air flow in the climate control system. Disassembly of the center console will be required to access and change the broken arm with the updated, reinforced part.

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Verified for the Mercedes-Benz C240 4MATIC

Inside grab handles, the upholstery on the center console cover, and door trim panels can delaminate. Most commonly replacement of the affected part is necessary.

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Verified for the Mercedes-Benz C240 4MATIC

Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).

4 Reports
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Verified for the Mercedes-Benz C240 4MATIC

The sway bar end link joints may wear and cause a knocking noise over bumps. Loose or warn links should be replaced to correct this type of noise.

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Verified for the Mercedes-Benz C240 4MATIC

High mileage or older vehicles commonly develop leaks from the differential seals and/or cover. Our technicians recommend a complete reseal of the differential unit whenever these leaks are repaired.

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