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What Does the Check Engine Light Mean?

One of the most commonly misunderstood lights or indicators in your 2012 Mercedes-Benz CLS 550 is the check engine light. The check engine light is part of the onboard diagnostics system, and displays in a few different ways. It can say "Check Engine", it can be a symbol of an engine, it can even be a combination of both. This light flashes in either an amber or red color and is part of the diagnostics system found on your vehicle. Onboard computers increasingly have controlled and monitored vehicle performance since the 80s and do a variety of things for your 2012 Mercedes-Benz CLS 550. Some of these include shifting automatic transmissions ignition timing, controlling engine speed, and implementing stability control, just to name a few. With that being said, the check engine light can represent a variety of contrasting things. It can be as simple as your gas cap being loose or as exacting as engine knocking. If your check engine light is on in your 2012 Mercedes-Benz CLS 550, contact Plaza Motor Company. Contact Plaza Motor Company today! Our Mercedes-Benz service department can help you find out what code is turning your check engine light on or diagnose why your check engine light is flashing.

Check Engine Light Service 2012 Mercedes-Benz CLS 550

What do you do when you’re driving along in your Mercedes-Benz CLS 550 and promptly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Mercedes-Benz owners, your heart sinks a microscopic because you have microscopic idea about what that light is trying to tell you or how you should react. The fear of the unknown (or the cost of the unknown) can be just as stressful. But take a deep breath and realize the light coming on doesn’t mean you have to pull the vehicle over to the side of the road and call a tow truck, but it is recommended that you get your 2012 Mercedes-Benz CLS 550 checked as soon as sane. Ignoring that warning could end up causing major damage to expensive engine components.

When your 2012 Mercedes-Benz CLS 550's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electrical control system that it can’t noble, a computer turns on your check engine light. This amber or yellow light is frequently labeled “check engine” or “service engine soon”, or the light may be nothing more than a picture of an engine, or a picture of the engine with the word “check.”

When the light turns on, the ECM stores an engine code or “trouble code” in its memory that identifies as the issue, whether it's a sensor or a failing engine part. This code is read with an computerized scan tool that is used by our Mercedes-Benz auto repair mechanics at Plaza Motor Company. There are also a number of relatively inexpensive code readers that are designed for do-it-yourselfers, should you choose that route too. While this code will tell you the issue that is detected, a true diagnosis still requires an experienced active to prefer the issue and repair it.

What could cause the check engine light to come on in a 2012 Mercedes-Benz CLS 550?

When your check engine light comes on, this could be as classic as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a strict problem that could cause strict damage to your engine and come with a colossal repair bill. Depending on your make and model, the check engine light will illuminate or blink. A steady glow commonly means something fewer strict but a flashing check engine light hints that your vehicle’s engine is in strict trouble and service is needed instantly. If your check engine light is flashing in your 2012 Mercedes-Benz CLS 550, we remarkably indicate not to drive the automobile and schedule Mercedes-Benz service now. Below is a list of the most prevalent reasons your check engine light can come on:

  • Your O2 Sensor (Oxygen Sensor) needs to be replaced. The Oxygen sensor, known as the O2 sensor, measures the amount of oxygen in your exhaust system. If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be less honorable when it comes to fuel economy. So what happens if I don’t replace your O2 sensor? A faulty sensor can not only affect your miles per gallon, but it can cause damage to your catalytic converter and your 2012 Mercedes-Benz CLS 550's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to determine the noble mixture of air and fuel that enters the cylinders in your engine. A harmful O2 sensor can also cause a vehicle to fail an emissions test.
  • The battery is poor or dead. The battery in your 2012 Mercedes-Benz CLS 550 is every essential. Without a vehicle battery, your vehicle won’t start, light up the road ahead, play the radio or charge your phone. Today’s vehicle batteries last much longer than they did numerous decades ago, and they don't exclusively require maintenance. The price of a new one depends on the type of Mercedes-Benz you drive, but check our modern service coupons and specials.
  • Issues with all aftermarket items. An aftermarket alarm, exhaust or further item can wreak havoc on your 2012 Mercedes-Benz CLS 550 if it’s not installed properly. These aftermarket parts and accessories can drain the battery, trigger the check engine light, or even avoid the vehicle from starting. If these issues sound known, bring your CLS 550 to Mercedes-Benz and have our unit of certified mechanics ensure that your aftermarket items were installed properly and aren't causing all issue. Getting accessories, immensely aftermarket parts and accessories, or using OEM parts first place might cost a little bit more but could save you money from having to get poor work and damage caused by poor installation work corrected.
  • One of the most long-established and frequent cause is that your 2012 Mercedes-Benz CLS 550 gas cap is loose, damaged or missing. The gas cap for your 2012 Mercedes-Benz CLS 550 serves multiple purposes. It prevents gas fumes from being released when you aren't driving, it seals the fuel system and helps maintain pressure within the fuel tank. What happens if you have a harmful fuel cap? If your gas cap is old or has a ruptured seal, you can lose fuel through evaporation which will result in more trips to the pump. Luckily, to replace a gas cap isn't expensive. If your check engine light turns on immediately after you put gas in your 2012 Mercedes-Benz CLS 550, first thing you should check is to make sure the cap isn’t loose — or that it's still on your car’s roof or at the fuel pump.
  • Your catalytic converter is harmful or going harmful. The catalytic converter is a part of your 2012 Mercedes-Benz CLS 550’s exhaust system. The catalytic converter's function is to turn the carbon monoxide created by the combustion process into carbon dioxide. A damaged catalytic converter is usually caused by neglected maintenance, which is why Plaza Motor Company offers a complimentary multi-point inspection with every Mercedes-Benz service. If you have an issue with your catalytic converter and don't get it repaired, your 2012 Mercedes-Benz CLS 550 will not pass an emissions test, show a lack of engine performance and will negatively affect your fuel economy. Your vehicle may run at a higher temperature, too, which can cause further problems from overheating.
  • Your 2012 Mercedes-Benz CLS 550 has a vacuum leak. Every Mercedes-Benz CLS 550 has a vacuum system that performs a wide variety of functions. The vacuum system also helps lower damaging emissions by routing the fumes as gasoline evaporates through the engine. If you notice that your RPM is high in idle or randomly surges, a vacuum leak could be the cause. Over time, vacuum hoses can arid out and crack, immensely if they’re exposed to exciting heat or extreme chilly.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Mercedes-Benz CLS 550 is what determines how much fuel is mandatory to run your engine efficiently by measuring the amount of air entering the engine. As a part of the engine management system, the mass airflow sensor helps adjust to actual changes, like altitude. If your Mercedes-Benz CLS 550 is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a harmful mass airflow sensor.
  • New Spark Plugs or Plug Wires are mandatory for your 2012 Mercedes-Benz CLS 550. The spark plugs are the part of your engine that ignites the air/fuel mixture in the combustion chamber of your vehicle. This explosion is what moves the pistons and makes the engine run. The spark plug wires deliver the spark from the ignition coil to the spark plugs. If your spark plugs or spark plug wires are harmful or old, you will experience poor performance and reduced power. In some extreme cases, your engine will have trouble starting or continuing to run. Worn spark plugs and plug wires can cause clogged catalytic converter or damage to ignition coils and O2 sensors, large to more expensive repairs.

Will the check engine light reset itself?

The check engine light on your 2012 Mercedes-Benz CLS 550 will commonly shut itself off if the issue or code that caused it to turn on is fixed. For example, if the cause of your check engine light coming on was a loose gas cap, if it's tightened, the light will turn itself off. Likewise, if your catalytic converter is going functional, and you did a lot of stop-and-go driving, that may have turned on the check engine light due to the high usage of the converter. In most cases, your 2012 Mercedes-Benz CLS 550 light will go off after about 20-40 miles. If you drive over that amount and the light is still on, you will need to bring it in to Plaza Motor Company so the light and code can be double-checked and reset.

2012 Mercedes-Benz CLS 550 Check Engine Light Flashing

Although there are countless potential causes of an illuminated Check Engine Light, we know from years of providing Check Engine Light Diagnosis Service that there are several prevalent causes consisting something as prevalent as a loose gas cap. Other prevalent reasons for a Check Engine Light are dirty mass airflow sensor, faulty emissions control part, a malfunction with the fuel injection system, faulty head gasket, damaged oxygen sensor, or defective spark plugs to name a few. No matter what is the root cause of the Check Engine Light, we have the Mercedes-Benz Certified Technicians and the certified service protocol to isolate the root problem and repair it as needed to restore factory specifications. When this happens, the Check Engine Light turns off, and you can leave the service center knowing that your Mercedes-Benz issue was repaired.

Every 2012 Mercedes-Benz CLS 550 was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the automobile on its hard systems. The sensors are ordinarily detecting conditions while sending data to the electronic control unit. If the electronic control unit detects that the data is out of factory specifications, the Check Engine Light lights up telling you that there is a problem. However, that is the limitation of the Check Engine Light – it won’t tell you what exactly is wrong nor what to do about it. That’s where we come in; Plaza Motor Company provides a Check Engine Light Diagnosis Service that isolates the core problem and gives you a recommendation on what to do next from a Highly Qualified Service professional.

2012 Mercedes-Benz CLS 550 Check Engine Light Codes

The check engine light turning on can be quite intimidating to see that miniature light on your vehicle’s dashboard suddenly illuminates, but in reality, it is not something that should cause you to shut down in fear right away. If you hear the term, diagnostic trouble codes (DTC), these are just additional name for check engine light codes. These are automotive computer codes stored by the ECM, also known as the OBD (on-board computer diagnostic system) in your CLS 550. There are hundreds of different codes that your check engine light can designate. While that sounds daunting, with a miniature patience, tackling dominant diagnostics will give you dominant knowledge about your automobile and will also allow that Check Engine Light to do what it is surely supposed to do: be your guide. Regrettably, accessible and dominant automobile symptoms do not always accompany an illuminated Check Engine Light. Since there are hundreds of convenient OBD codes, there are also hundreds of convenient reasons for the light, including:

  • Computer output circuit issues
  • Loose Gas Cap or Missing Gas Cap
  • Bad Spark Plugs
  • Old Battery
  • Emissions controls issues
  • Ignition system faults
  • O2 Sensor
  • Transmission issues
  • Fuel and air metering systems problems

This is why it is awesome for someone who does not have a lot of automotive knowledge to not assume what a code means. If the engine light comes on due to a hazardous concern, you risk bad your car further by not repairing the issue prudent away. When your check engine light comes on, you should get it checked out abruptly by a certified Mercedes-Benz mechanic. Call Plaza Motor Company at 3145825294 today or schedule your check engine light service online today!

How many miles can you drive with the check engine light?

Since each check engine code has its own level of severity, it is difficult to predict how innumerable miles you can travel to work with the warning light on. The safest bet is to decipher the code and then plan your strategy accordingly. If you check engine light is flashing, we recommend that you pull over and contact Plaza Motor Company to help asset if your vehicle is safe to travel to work in or if we recommend a tow truck. It could be anything from a bad sensor to plug wires needing to be replaced.

Is it safe to drive your 2012 Mercedes-Benz CLS 550 with the check engine light on?

This question is not very authentic because it all depends on the severity of the issue. If the cause is a minor issue, such as a loose gas cap, it should be safe to drive. This is mostly indicated by a steady glow of the check engine light. If you notice a difference in the performance of the vehicle, it could be an indication of a more critical problem. If the check engine light is blinking, this means that there is a critical issue and it is recommended to service your Mercedes-Benz CLS 550 today. Call the advisors at Plaza Motor Company by dialing 3145825294 so you can describe the issues. Or lessen your speed and bring your 2012 Mercedes-Benz to our certified mechanics as soon as essential.

2012 Mercedes-Benz CLS 550 Check Engine Light

A blinking light indicates that the problem is adequate and if not taken care of shortly may result in potent damage to the vehicle. If the check engine light in your 2012 Mercedes-Benz CLS 550 starts blinking, that means that the problem needs immediate attention and your Mercedes-Benz should be delivered in shortly. This blinking light frequently indicates a rigorous engine misfire allowing unburned fuel to be drained into the exhaust system. There it can quickly enhance the temperature of the catalytic converter to a point where break is likely, requiring an expensive repair. Some owners ask if spark plugs cause the check engine light to flash? This can strictly be the cause. A bad, classic or dirty spark plug can cause the engine to misfire. If your check engine light is flashing, please contact our department of automotive experts at Plaza Motor Company hastily by calling 3145825294. If the problem is ignored or you continue to drive, this can spread to the spark plug wires, catalytic converter, or ignition coils which can lead to a highly expensive repair.

How much does it cost to get the engine light checked?

The check engine light warns of issues ranging from a gas cap that's not accordingly tightened to a more productive failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it sure to get the suitable code reading and diagnosis. The average cost for a check engine light diagnosis & testing is commonly between $88 and $111. The sure news, Plaza Motor Company offers complimentary multi-point inspections and free diagnostics, in most cases, to help represent the cause of your check engine light.