Mercedes-Benz C320 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz C320 4MATIC

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Mercedes-Benz C320 4MATIC Problems

"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.

Spark plug wires causing misfire

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

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.

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Mercedes-Benz C320 4MATIC Reviews

I like this car a lot and like to learn things I can do to maintain my own vehicle. I have had my 03 c320 4matic wagon for 4 years now. I bought it with 80k on it and it now has 120k. The radiator has a defect that leaks coolant into the transmission cooler and causes the transmission to buck because of the water and glycol in the tranny fluid. Recommended fix is to get an after market radiator...
Feels like I got a lemon car. I bought the car when it had 46 thousand miles on it. When I hit 60 thousand everything started to go wrong at once. The rear sun visor motor burned out, the air flow sensor went bad (caused my car to not be drivable), both front axle inside boots sheared off, both control joints went bad (causing the car to wander extremely to each side while turning to the point ...
So far, so good. Except for a rather flimsy, hard plastic door handle for the front doors, everything else is first class. Comfortable, yet sporty ride, durable construction, reliable engine.

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