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31445 I-10, Boerne, TX, 78006

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Dealership Info

Phone Numbers:Online Showroom Hours:
  • Mon - Sun12:00 AM - 12:00 AM
    (Always Open for Online Shopping)
Sales Hours:
  • Mon - Fri8:30 AM - 7:00 PM
  • Sat8:30 AM - 6:00 PM
  • SunClosed
Service Hours:
  • Mon - Sat7:00 AM - 6:00 PM
  • SunClosed
Parts Hours:
  • Mon - Sat7:00 AM - 6:00 PM
  • SunClosed
Service

Why Is My Mercedes-Benz Check Engine Light On?

why is my mercedes-benz check engine light  on?


Mercedes-Benz of Boerne invites you to find out why your Mercedes-Benz check engine light is on.

The check engine light warns drivers of possible engine issues or complete failure. There are lots of reasons your vehicle’s check engine light might turn on. It may be anything from a simple sensor failure, alerting you to do maintenance, or even to be looking for major issues that could cause engine failure. So, just because the check engine warning light turns on, it might not be a total disaster. However, if your check engine light comes on, we suggest bringing it to us for a full diagnostic inspection as soon as possible. Even if nothing feels broken, getting it inspected can mean the difference between having to replace the engine and a cheap repair.


The Gas Cap is Old

Loose Gas Cap

Something as basic as not replacing your gas cap or not tightening it correctly may cause a check engine warning light. The gas cap may need to be changed during your ownership. After 50,000 miles, you should consider replacing the gas cap. If you feel you need to replace your gas cap, we highly recommend genuine replacement parts from the manufacturer. Parts from DIY stores can work in an emergency, but nothing beats OEM parts.

Old O2 Sensors

O2 Sensors in Your Car are Bad

There are several sensors that give info to your engine to help it work more efficiently. However, incorrect readings from components like the mass airflow sensor or the O2 sensors can cause a check engine light. If the car seems normal, an old O2 sensor is the likely culprit. In this situation, it may mean the car is probably fine, but because the engine isn’t receiving the information, it triggers a warning. Even if your vehicle feels unaffected, you should probably get your car checked out immediately to rule out any potential more serious issues.

Bad Spark Plugs

Failing Spark Plugs

Spark plugs are essential to the efficiency of your engine. As the name implies, spark plugs give off a small spark of electricity, which then ignites the gas and causes an engine to run. Spark plugs have accurate tolerances for optimal performance, and if the spark plug setup is incorrect, it could cause a check engine light. Some symptoms of old spark plugs include lower fuel economy, less engine power, and your engine just doesn’t run smoothly.



Mercedes-Benz online car buying San Antonio  TX

Schedule Mercedes-Benz Service Near San Antonio

Mercedes-Benz of Boerne is one of the best places to get engine repair in the San Antonio area. We proudly service all makes and models of vehicles. Visit our location online or in person to schedule service and repair for your car or truck. Our friendly technicians are ready to serve you.

Mercedes-Benz of Boerne 29.7915419, -98.7496179.