2022 Mercedes-Benz EQS 450+ Has A Check Engine Light

Check Engine Light Issues in 2022 Mercedes-Benz EQS 450+

Find Repair Location
Reviewed by
Andrew Hajjar
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 2022 Mercedes-Benz EQS 450+ 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 2022 Mercedes-Benz EQS 450+ 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.

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 initial diagnostic steps to take for a check engine light on a 2022 Mercedes-Benz EQS 450+?

When dealing with a check engine light on your 2022 Mercedes-Benz EQS 450+, it's crucial to follow a methodical diagnostic approach to pinpoint the issue accurately. Begin by checking for any additional warning lights on the dashboard, as these can provide essential clues about the underlying problem. Next, inspect the gas cap to ensure it is properly secured, since a loose or damaged cap is a frequent cause of the check engine light activation. Additionally, take the time to visually examine the engine compartment for any visible damage to wires, hoses, or connectors, as these can also trigger the warning light. To further investigate, use an OBD-II scanner to retrieve error codes, which will help identify specific issues and guide your troubleshooting efforts. Lastly, refer to the owner's manual for your EQS 450+, as it may contain important information regarding the check engine light and any manufacturer-recommended steps. By systematically following these steps, you can effectively diagnose the problem and take appropriate action to resolve it.

What are the common problems that could cause the check engine light to illuminate in a 2022 Mercedes-Benz EQS 450+?

When the check engine light comes on in your 2022 Mercedes-Benz EQS 450+, it can be a source of concern, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty oxygen sensor, which can disrupt the air-fuel mixture and negatively impact engine performance. Another simple issue to check is the gas cap; a loose or damaged cap can lead to fuel vapor leaks, triggering the light. Additionally, problems with the catalytic converter, such as inefficiency or failure, can also illuminate the check engine light and affect your vehicle's performance. Spark plug issues, including wear or malfunction, can cause misfires and rough idling, while a malfunctioning mass airflow sensor can disrupt the engine's air-fuel balance. Addressing these issues promptly is crucial to maintaining your vehicle's performance and preventing further damage. If you're not comfortable diagnosing the problem yourself, consulting a qualified mechanic is always a wise choice.

What immediate actions should be taken when the check engine light appears on a 2022 Mercedes-Benz EQS 450+?

When the check engine light illuminates on your 2022 Mercedes-Benz EQS 450+, it’s crucial to act swiftly to prevent potential safety risks and costly repairs. Start by checking your dashboard for any additional warning lights or messages that could offer insights into the problem. A common yet often overlooked issue is a loose gas cap; ensure it is securely tightened, as this simple fix can sometimes resolve the warning. While driving, reduce your speed and avoid heavy loads to minimize strain on the vehicle until the issue is diagnosed. It’s essential not to ignore the light, as doing so could lead to more severe mechanical failures. If the light persists, scheduling an inspection with a certified Mercedes-Benz technician is advisable to accurately diagnose and address the underlying issue. Taking these immediate actions not only helps maintain your vehicle's performance but also ensures your safety on the road.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.