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What Does the Check Engine Light Mean?

One of the most usually misunderstood lights or indicators in your 2012 Mercedes-Benz S 400 is the check engine light. The check engine light is part of the onboard diagnostics system, and displays in a few distinctive ways. It can say "Check Engine", it can be a symbol of an engine, it can even be a combination of both. This light illuminates 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 S 400. Some of these include ignition timing, shifting automatic transmissions controlling engine speed, and implementing stability control, just to name a few. With that being said, the check engine light can indicate a variety of diverse things. It can be as pure as your gas cap being loose or as hazardous as engine knocking. If your check engine light is on in your 2012 Mercedes-Benz S 400, contact Plaza Motor Company. Our Mercedes-Benz service department can help you find out what code is turning your check engine light on or inspect why your check engine light is flashing. Contact Plaza Motor Company today!

2012 Mercedes-Benz S 400 Check Engine Light Flashing

Although there are bountiful achievable causes of an illuminated Check Engine Light, we know from years of providing Check Engine Light Diagnosis Service that there are assorted easy causes including something as easy as a loose gas cap. Other easy reasons for a Check Engine Light are faulty head gasket, a malfunction with the fuel injection system, damaged oxygen sensor, faulty emissions control part, dirty mass airflow sensor, or defective spark plugs to name assorted. 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 fixed.

Every 2012 Mercedes-Benz S 400 was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the vehicle on its scrupulous systems. The sensors are continually 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 erroneous 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.

What could cause the check engine light to come on in a 2012 Mercedes-Benz S 400?

When your check engine light comes on, this could be as real as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a noticeable problem that could cause noticeable damage to your engine and come with a splendid repair bill. Depending on your make and model, the check engine light will illuminate or blink. A persuasive glow consistently means something less noticeable but a flashing check engine light indicates that your vehicle’s engine is in noticeable trouble and service is paramount immediately. If your check engine light is flashing in your 2012 Mercedes-Benz S 400, we remarkably advocate not to drive the automobile and schedule Mercedes-Benz service now. Below is a list of the most real reasons your check engine light can come on:

  • Your 2012 Mercedes-Benz S 400 has a vacuum leak. Each Mercedes-Benz S 400 has a vacuum system that performs a wide assortment of functions. The vacuum system also helps lower harmful 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 dry out and crack, especially if they’re exposed to productive heat or extreme cold.
  • Issues with any aftermarket items. An aftermarket alarm, exhaust or other item can wreak havoc on your 2012 Mercedes-Benz S 400 if it’s not installed subsequently. These aftermarket components and accessories can ditch the battery, trigger the check engine light, or even prevent the vehicle from starting. If these issues sound popular, deliver your S 400 to Mercedes-Benz and have our team of certified mechanics ensure that your aftermarket items were installed correctly and aren't causing any issue. Getting accessories, especially aftermarket parts and accessories, or using OEM components initial place might rate a tiny bit more but could save you money from having to get poor work and wear and tear caused by poor installation work corrected.
  • Your catalytic converter is bad or going bad. The catalytic converter is a part of your 2012 Mercedes-Benz S 400’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 consistently caused by neglected maintenance, which is why Plaza Motor Company offers a complimentary multi-point inspection with each Mercedes-Benz service. If you have an issue with your catalytic converter and don't get it repaired, your 2012 Mercedes-Benz S 400 will not pass an emissions test, show a lack of engine performance and will negatively affect your fuel economy. Your car may run at a higher temperature, too, which can cause other problems from overheating.
  • The battery is low or dead. The battery in your 2012 Mercedes-Benz S 400 is each vital. Without a car battery, your car won’t start, light up the road ahead, play the radio or charge your phone. Today’s car batteries last much longer than they did some decades ago, and they don't genuinely require maintenance. The price of a new one depends on the type of Mercedes-Benz you drive, but check our existing service coupons and specials.
  • 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 compelling 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 wear and tear to your catalytic converter and your 2012 Mercedes-Benz S 400's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to designate the good mixture of air and fuel that enters the cylinders in your engine. A bad O2 sensor can also cause a car to fail an emissions test.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Mercedes-Benz S 400 is what determines how much fuel is imperative 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 responsive changes, like altitude. If your Mercedes-Benz S 400 is having trouble starting, idling rough or has a abrupt change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor.
  • One of the most present and bountiful cause is that your 2012 Mercedes-Benz S 400 gas cap is loose, damaged or missing. The gas cap for your 2012 Mercedes-Benz S 400 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 bad fuel cap? If your gas cap is historic 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 lavish. If your check engine light turns on instantly after you put gas in your 2012 Mercedes-Benz S 400, initial 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.
  • New Spark Plugs or Plug Wires are imperative for your 2012 Mercedes-Benz S 400. 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 bad or historic, 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 wear and tear to ignition coils and O2 sensors, extensive to more lavish repairs.

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 critical failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it excellent to get the big code reading and diagnosis. The average value for a check engine light diagnosis & testing is frequently between $88 and $111. The excellent news, Plaza Motor Company offers complimentary multi-point inspections and free diagnostics, in most cases, to help pick the cause of your check engine light.

Is it safe to drive your 2012 Mercedes-Benz S 400 with the check engine light on?

If the check engine light is glaring, this means that there is a relentless issue and it is recommended to service your Mercedes-Benz S 400 rapidly. This question is not very discernible because it any 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 generally indicated by a coherent 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 persuasive problem. Call the advisors at Plaza Motor Company by dialing 3145825294 so you can describe the issues. Or reduce your speed and bring your 2012 Mercedes-Benz to our certified mechanics as soon as functional.

Check Engine Light Service 2012 Mercedes-Benz S 400

What do you do when you’re driving along in your Mercedes-Benz S 400 and suddenly, a yellow light brightens on your dash and says "Check Engine". If you’re like most Mercedes-Benz owners, your heart sinks a little because you have little 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 represent you have to pull the car over to the side of the road and call a tow truck, but it is recommended that you get your 2012 Mercedes-Benz S 400 checked as soon as possible. Ignoring that warning could end up causing major damage to expensive engine elements.

When your 2012 Mercedes-Benz S 400's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the mechanical control system that it can’t honest, a computer turns on your check engine light. This amber or yellow light is typically 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 electronic scan tool that is used by our Mercedes-Benz auto repair mechanics at Plaza Motor Company. There are also a number of comparatively inexpensive code readers that are designed for do-it-yourselfers, should you embrace that route too. While this code will tell you the issue that is detected, a true diagnosis still requires an experienced expert to mean the issue and repair it.

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

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

2012 Mercedes-Benz S 400 Check Engine Light Codes

The check engine light turning on can be quite intimidating to see that miniature light on your vehicle’s dashboard abruptly 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 another name for check engine light codes. These are automotive computer codes stored by the ECM, also cognizant as the OBD (on-board computer diagnostic system) in your S 400. There are hundreds of discrete codes that your check engine light can determine. While that sounds daunting, with a miniature patience, tackling basic diagnostics will give you correct knowledge about your vehicle and will also allow that Check Engine Light to do what it is certainly supposed to do: be your guide. Unfortunately, particular and sure vehicle 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:

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

This is why it is essential 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 unhealthy concern, you risk damaging your car further by not repairing the issue equitable away. Call Plaza Motor Company at 3145825294 hastily or schedule your check engine light service online today! When your check engine light comes on, you should get it checked out swiftly by a certified Mercedes-Benz mechanic.

2012 Mercedes-Benz S 400 Check Engine Light

A flashing light suggests that the problem is draconian and if not taken care of swiftly may result in certain damage to the vehicle. If the check engine light in your 2012 Mercedes-Benz S 400 starts flashing, that means that the problem needs immediate attention and your Mercedes-Benz should be brought in swiftly. This blinking light usually indicates a exacting engine misfire allowing unburned fuel to be dumped into the exhaust system. There it can hastily hike the temperature of the catalytic converter to a point where damage is likely, requiring an costly repair. A Tiny owners ask if spark plugs cause the check engine light to flash? This can specifically be the cause. A bad, former or dirty spark plug can cause the engine to misfire. 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 very fancy repair. If your check engine light is flashing, please contact our company of automotive experts at Plaza Motor Company hastily by calling 3145825294.

Will the check engine light reset itself?

The check engine light on your 2012 Mercedes-Benz S 400 will usually 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 exact, 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 S 400 light will go off after about 20-40 miles. If you drive over that reward and the light is still on, you will need to transport it in to Plaza Motor Company so the light and code can be double-checked and reset.