2007 Mercedes-Benz C350 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2007 Mercedes-Benz C350 4MATIC

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2007 Mercedes-Benz C350 4MATIC Problems

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.

The Power Steering Fluid Reservoir Leaks

The power steering reservoir designed for the Mercedes Benz C350 4Matic commonly leaks power steering fluid causing a screeching sound when turning the steering wheel, especially when the vehicle is stopped. The power steering light may illuminate on the dash for more severe leaks.

This is caused by cracking in the plastic reservoir, or a hardened, brittle seal between the power steering reservoir and power steering pump.

Remediation involves replacing the power steering fluid reservoir, power steering fluid, bleeding the system of air, and replacement of the seal between the reservoir and power steering pump.

"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.

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2007 Mercedes-Benz C350 4MATIC Questions

The vehicle hesistates when I shift to reverse. (2 answers)

Whenever the car is shifted from park to reverse there's a noticably long delay before the transmission engages. Then I feel a "thud" and the car moves in reverse. This occurs whether my foot is on the accelerator or not.

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