Problems for specific Mercedes-Benz C240 4MATIC years:

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Most reported 2005 Mercedes-Benz C240 4MATIC problems

 

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.

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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.

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Verified for the Mercedes-Benz C240 4MATIC

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

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Verified for the Mercedes-Benz C240 4MATIC

A dead battery can be caused by a faulty seat control module that does not properly shut down.  Spilling liquids on the front seats can cause these modules to fail.

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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 CD changer may suffer from an internal mechanical problem. Replacement of the faulty unit is generally required to correct this issue.

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Verified for the Mercedes-Benz C240 4MATIC
The heater case for the center vents can crack near the stop sensors. If the stops break, the control motor will not know when to stop and will run continuously.
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Verified for the Mercedes-Benz C240 4MATIC

A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.

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