2003 Mercedes-Benz C230 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Mercedes-Benz C230

2003 Mercedes-Benz C230 Problems

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.

Camshaft Adjuster Solenoid Failure

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.

Mass Air Flow Sensor Failure Causing Poor Fuel Economy and Check Engine Light On

The mass air flow sensor can fail, resulting in poor fuel economy and Check Engine Light illumination.

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2003 Mercedes-Benz C230 Questions

Where is the Crankshaft Position Sensor located for my car? (1 answer)

The other day. The wife parked the car at work.

She said it did not want to start. I checked it out and brought my OBD reader. It threw out some codes of concern initially for the CAMSHAFT Sensors.

I had it towed to a nearby shop and they said the CAMSHAFT POSITION SENSORS had some oil o...

benz c230 has coolant in the transmission pan cant tell where its coming from (1 answer)

Front seat won't move; stuck in farthest back position (2 answers)

I have to drive with a pillow behind me

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2003 Mercedes-Benz C230 Reviews

I am buying a 2003 c230 at a local dealer for 7000.00, they are having the valves done and the guy said it would run 1800 and split the cost with me or he would just wholesale it. It is in great shape otherwise. The compression runs 160-160-160-100, with cyl # 1 being the issue.....is this common at 100k mi?
The right and left front blinkers have both gone out, been replaced and now the right front blinker is not working!!! Other than that I LOVE THIS CAR. It feels like a little tank compared to the Toyota I used to own. The Dealership will way too expensive so I use a private mechanic. So far, the only problem I've encountered is the blinkers. I did replace the battery at 46,000 miles.
I bought my c230 after driving a sporty Acura RSX type-S for a couple of years. The comfort was the first thing that I noticed. The seats are accommodating and the electronic seat adjustment for both driver and passenger is a great addition. The ride is smooth for such a sporty car, and the transmission shifts with little hesitation. Smooth is what I have to say about the driving experience. If...

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