2013 Mercedes-Benz CLS63 AMG Has A Check Engine Light

Check Engine Light Issues in 2013 Mercedes-Benz CLS63 AMG: Causes and Solutions

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Emissions System
0%
60% chance it's
Something else
The most common reasons a 2013 Mercedes-Benz CLS63 AMG has a check engine light are an emissions system component, a sensor, or a catalytic converter.
  • Emissions System: A faulty emissions system component, such as an oxygen sensor or EGR valve, can lead to increased emissions and trigger the check engine light.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2013 Mercedes-Benz CLS63 AMG has a check engine light?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What are the steps to diagnose the check engine light on a 2013 Mercedes-Benz CLS63 AMG?

To diagnose the check engine light on your 2013 Mercedes-Benz CLS63 AMG, start with the simplest solution: check the gas cap. A loose or damaged gas cap can easily trigger the warning light, so ensure it is securely tightened. If the gas cap is not the issue, the next step is to use an OBD-II scanner. This tool connects to your vehicle's diagnostic port and retrieves error codes that provide insight into the underlying problem. Once you have the error codes, interpret them carefully, as they will guide you to the specific components that may be malfunctioning. Pay particular attention to critical sensors, such as the oxygen sensor, and inspect them for any visible damage or wear. If you find that the issue is beyond your expertise or if the error codes are unclear, it is wise to consult a professional mechanic or an authorized Mercedes-Benz service center for a comprehensive diagnosis. By following this structured approach, you can effectively identify and address the cause of the check engine light, ensuring your vehicle runs smoothly.

What are the common problems that could cause the check engine light to illuminate in a 2013 Mercedes-Benz CLS63 AMG?

When the check engine light comes on in your 2013 Mercedes-Benz CLS63 AMG, it can be a source of concern, but understanding the common problems can help you take the right steps. One frequent culprit is engine misfires, which occur when the air-fuel mixture fails to ignite properly in the engine's cylinders, leading to performance issues. Another common issue is a faulty oxygen sensor; this component plays a crucial role in monitoring the oxygen levels in the exhaust gases, and if it malfunctions, it can trigger the check engine light. Additionally, don’t overlook the possibility of a loose or defective gas cap. A simple oversight like a loose gas cap can cause the light to illuminate, as it affects the fuel system's pressure. By being aware of these potential problems, you can perform preliminary checks and possibly resolve the issue before seeking professional help, ensuring your vehicle runs smoothly and efficiently.

How urgent is it to address the check engine light in a 2013 Mercedes-Benz CLS63 AMG?

When the check engine light illuminates in your 2013 Mercedes-Benz CLS63 AMG, it is crucial to recognize the urgency of the situation. This warning light is not merely a nuisance; it indicates that there may be underlying issues with your engine or emissions system that require immediate attention. Ignoring this signal can lead to a cascade of problems, including decreased fuel efficiency, compromised engine performance, and even severe engine damage over time. For DIY enthusiasts, it is essential to understand that while some minor issues may seem manageable, the potential for significant safety risks and costly repairs makes it imperative to diagnose the problem as soon as possible. By taking proactive steps to investigate the cause of the check engine light, you not only safeguard your vehicle's performance but also enhance its longevity and reliability. Therefore, addressing this warning promptly is not just advisable; it is a necessary action to ensure your vehicle remains in optimal condition.

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