Catalytic converter failure is common and may cause a Check Engine Light to illuminate.
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Most reported 2005 Mercedes-Benz C55 AMG problems
Oil Leaking From Oil Level Sensor
An engine oil leak may develop from the oil level sensor. Replacement of the leaking sensor will commonly correct this concern.
3 Reports
Harmonic Balancer May Fail and Damage Timing Cover
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
"Crank no Start" Due to Failed Crankshaft Position Sensor
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.
3 Reports
The Differential May Develop Leaks From the Seals or Cover
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.
2 Reports
ABS Modulator Failure Due to Dirty Brake Fluid
The anti-lock brake system (ABS) modulator assembly may fail due to dirty brake fluid. Our technicians recommend a complete brake system flush every two years in order to help prevent this problem.
2 Reports
Rough Shifting of Automatic Transmission
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.
2 Reports
Engine Oil Leak From PCV Vent Housing and/or Engine Inspection Plate
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.
2 Reports
Tire Wear Caused By Worn Front Thrust Link Bushings
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.
2 Reports
Knocking Noise Over Bumps Due to Worn Sway Bar Link Joints
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.
2 Reports
Spark plug wires causing misfire
Bad spark plug wires can cause misfires; the Check Engine Light may illuminate.
2 Reports
Hold down nut for front strut may bacome loose
The hold down nut for the upper front strut area can become loose, causing a knocking noise. This can be repaired without removing the strut assembly.
2 Reports
Replace air filter when replacing failed mass air flow sensor
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.
2 Reports
Dead Battery Due to Failed Seat Control Module
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.
2 Reports
CD Changer May Suffer From Internal Mechanical Problem
The CD changer may suffer from an internal mechanical problem. Replacement of the faulty unit is generally required to correct this issue.
2 Reports