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Mercedes-Benz C Class Common Problems and Solutions

MAF sensor failure

Problem:

The MAF (Mass Air Flow) sensor failing can cause insufficient power and lack of acceleration. It is recommended that you replace the MAF sensor on this vehicle every 50,000 miles. The MAF sensor is able to sense how much air passes as well as the temperature of that air. This allows the fuel injection system to control the fuel mixture to compensate for cold weather and high altitude driving.

Models affected:

Solution:

Although it is recommended that you replace the MAF sensor every 50,000 miles, this issue can sometimes be resolved by cleaning the MAF sensor with some MAF sensor cleaner. If this does not work, you will need to purchase a replacement sensor. Watch the video below to see how to clean the MAF sensor:

Difficulty level

3

Part you need

Mass Airflow Sensor

Part required

Mass Airflow Sensor

Get a quote for Mass Airflow Sensor

Squeaky boot

Problem:

If you are hearing a squeaking noise when opening and closing the boot then this is caused by the boot hinges not being lubricated enough.

Models affected:

Solution:

You will need to lubricate the boot hinges to resolve this issue. You can simply use some WD40 to do this.

Difficulty level

2

Headlight bulb failure

Problem:

The headlights on the third generation of the C-Class are gas discharge headlights. The bulbs on these headlights are known for letting in moisture, which can result in the bulb becoming defective.

Models affected:

Solution:

Fitting a replacement bulb will fix the headlights, but even with the replacement bulb fitted it can still be susceptible to moisture.

Difficulty level

3

Folding mirror problems

Problem:

The electric folding mirrors on the C-Class are prone to problems. They are especially known for a loud creaking noise when folding away, but can also have issues with not folding away at all. The creaking noise is caused by a problem with mirror wheels.

Models affected:

Solution:

You will need to fit a replacement wheel to resolve the issue, but if the mirror is not folding at all then you may need to purchase a replacement folding mirror mechanism. We can help you find this part at a very low price.

Difficulty level

4

Reading these common Mercedes-Benz C Class problems should help you find out what is wrong with your Mercedes-Benz C Class – or just what to look out for in the future. We’ll also give suggestions on what to do if your Mercedes-Benz C Class does have one of these issues.