Mercedes Engine Light: What Does It Mean And Why Check It?

If you own a luxury car, you probably appreciate all the luxurious features that come with it. However, owning this car requires you to pay close attention to its maintenance. One important aspect is the check engine light. The engine light is designed to notify drivers of potential problems that might not be too obvious. 

If the engine light comes on and you don't know why it can be extremely frustrating. This article outlines the main reasons for an engine light check and how these issues can be fixed.

The Gas Cap Isn't Properly Tightened

If your engine light is on, one of the first things you should check is the gas cap. Believe it or not, many car owners forget to tighten their gas caps after refueling. 

If the gas cap isn't tightened properly, it can cause fuel vapor to escape. This will in turn generate more emissions and reduce the fuel efficiency of your car. The issue will then trigger the engine light to turn on since the car's computer system will think there's a problem with the fuel system.

The good news is that this issue is usually an easy fix. Simply tighten the gas cap until it clicks, and the engine light should go off.

The Mass Airflow Sensor Is Dirty

The engine light can also come on if the mass airflow sensor is dirty. The mass airflow sensor measures the amount of air flowing into the engine. If it's dirty, it can cause the engine to run lean. This means that there's not enough fuel being delivered to the engine, which will trigger the engine light.

The mass airflow sensor is located in the air filter box. You can try cleaning it with compressed air or a special cleaner. If the engine light doesn't go off after cleaning the sensor, then the sensor might be faulty and will need to be replaced.

A faulty sensor can also cause your car to stall or have difficulty starting. It can cause serious damage to the engine if left unrepaired, so it's best to take your car to a specialized mechanic as soon as possible.

These are just a few of the main reasons for an engine light check. Luxury cars have sensitive engines, so don't attempt any DIY fixes unless you're absolutely sure of what you're doing. The wrong repair can cause even more damage, especially if other underlying issues exist. 

Contact a local auto shop, such as All German Auto, to learn more.