I have a 2005 Mercedes Benz C180 Kompressor the yellow engine light on the dashboard came on - what can the cause for this be.
Don’t panic. Here are five of the most common reasons why your check engine light might have come on in your Mercedes-Benz.
Check Engine Light Mercedes-Benz
1. Gas Cap
While your gas cap might not seem like the most important piece of equipment in your Mercedes-Benz, it actually carries a pretty important role. It maintains pressure in the engine and prevents fuel vapors from leaking out. In some cases the check engine light will come on when the gas cap is not tightly replaced. We suggest that you unscrew the gas cap and re-tighten until it clicks, then allow the check engine light up to a day to reset. A loose, broken, or missing gas cap can cause your vehicle to start jerking and lower its efficiency. If the light remains on after a day, take in to the service garage.
2. Oxygen Sensor
The oxygen sensor in your Mercedes-Benz monitors the percentage of unburned oxygen in the exhaust. Over time the sensor can get covered in ash; therefore, reducing its effectiveness and leading to a decrease in gas mileage and an increase in emissions.
3. Catalytic Converter
Your catalytic converter reduces exhaust gases by converting carbon monoxide and other harmful materials into harmless ones. Most failures are down to faults with other items, but a damaged catalytic converter can mean your car will fail its emissions test.
4. Mass Airflow Sensor
The mass airflow sensor allows your car’s computer to know how much fuel is needed based on the amount of air coming into the engine. Faults can decrease efficiency, increase emissions, and cause your car to stall.
5. Spark Plugs and Wires
Spark plugs and wires are responsible for creating the original spark that initiates combustion within your Mercedes-Benz, but they can fail over time. If yours are faulty, misfires will occur.
Your Mercedes-Benz Check Engine Light is never something you should ignore. While these reasons might not sound too serious, they can develop into a much more complex issue over time. See your mechanic.
on Nov 20, 2018