Mercedes Check-Engine Light On?Posted on March 9, 2019
If you’ve ever had the displeasure of noticing your check-engine light come on in your Mercedes, then you’re well aware of how discomforting and stressful it can be. Mostly the uncertainty of what could possibly be wrong is what upsets drivers the most upon illumination of the check-engine light. It’s important to keep in mind that the check-engine light could signify a number of different things going on with your Mercedes car, so before you panic, take some time to read this article to get a better understanding of what your Mercedes may need.
The Diagnostic Process
Since there are several different possible reasons why your Mercedes’ check-engine light is on, it’s first important to find a Mercedes specialist near you who can properly diagnose the problem. This will save you time, money, and energy in attempting to remedy the issue. The diagnostic process is a critical first step to take, and here’s what it traditionally looks like:
Interpreting emitted codes
Using specific equipment, your Mercedes specialist will essentially plug a computer into your car to read the codes that are being emitted by the onboard computer, telling the check-engine light to illuminate. This helps them find the exact area of your vehicle that requires attention or servicing.
Rule-out other potential causes
Since your Mercedes is a very complex machine, there are multiple parts within the diagnosed area that could be causing the issue. It is essential that your Mercedes specialist take the time to rule-out all the possible causes to avoid making unnecessary repairs, and of course, to ensure your safety.
Possible Reasons for Check-Engine Light Illumination
The cause of your check-engine light could be more severe, or it could be totally benign, ranging from costlier to totally free ways of fixing the issue. Here are the most common reasons why Mercedes’ check-engine lights come on:
Worn spark plugs
As time goes on, your Mercedes’ engine naturally requires repairs and replacements. One part that is anticipated to wear out over time is the spark plugs, or glow plugs. In a Mercedes car, glow plugs are critical for the combustion/ignition process. If they fail, it can take a serious toll on your performance and engine health.
Your Mercedes is equipped with several different sensors that help improve its efficiency and performance. Two sensors that could fail and lead to a check-engine light coming on are the MAF (mass airflow) sensor and the oxygen sensor. These two components maximize engine performance by optimizing fuel/air mixtures. If something goes wrong with these components, you might notice stalling, misfiring, or other serious side effects alongside a check-engine light illuminated.
Checked your gas cap lately?
Just as there could be some serious problems causing your check-engine light to come on, there could also be a simple issue taking place, such as a loose or ill-fitting gas cap.
What You Can Do Now
It can be both aggravating and terrifying when you notice your check-engine light come on – it usually creates a surge of anxiety and dread, and that’s perfectly normal. To combat your anxiety and stress in the long run, it’s essential to follow a few steps to get your Mercedes the best care possible:
- Don’t ignore the problem – bring it to a Mercedes specialist right away
- Pay attention to other accompanying symptoms to report to your specialist alongside check-engine light illumination
- Ask questions about your shop’s diagnostic process – don’t assume they’re experts in Mercedes, be sure to ask about their qualifications as well
- Avoid driving your car until the problem is fixed
- Follow routine maintenance plans found in your owner’s manual to avoid engine difficulties in the future
If you’re looking for a Mercedes specialist nearest to you in the Winter Park and Orlando, FL, areas, check out the Mercedes professionals here at Green Garage – we have earned our community’s respect and patronage because we pay attention to details, have extensive experience and skill working with Mercedes cars of all types, and always make it a point to put our clients’ satisfaction and safety first. To learn more about our shop or to schedule a diagnostic appointment, please feel free to directly call one of our Mercedes specialists today.
* Mercedes Logo image credit goes to: franz12.