2022 Mercedes-Benz GLS450 Engine Is Stalling

Common Causes of Engine Stalling in Your 2022 Mercedes-Benz GLS450 and How to Resolve Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Fuel System
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15% chance it's the
Air Intake System
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55% chance it's
Something else
The most common reasons a 2022 Mercedes-Benz GLS450 engine is stalling are the fuel system, the air intake system, or the ignition system.
  • Fuel System: A clogged fuel filter or failing fuel pump can restrict fuel flow, resulting in poor engine performance and starting issues.
  • Air Intake System: A dirty or damaged air filter or a malfunctioning mass airflow sensor can restrict airflow, leading to reduced engine performance and efficiency.
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 GLS450 engine is stalling?

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.

The most likely symptom of a faulty fuel temperature sensor is a check engine light. When the sensor goes bad, the Engine Control Module signals the driver that there is a problem by turning on the dash light. Poor fuel economy might also be noticed. In some cases, a failing fuel temperature sensor could lead to hard starting of the engine or an engine misfire and poor performance.

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 2022 Mercedes-Benz GLS450 experiencing engine stalling?

When faced with engine stalling in a 2022 Mercedes-Benz GLS450, it's essential to adopt a systematic diagnostic approach. Start by checking for error codes using a diagnostic scanner, as these codes can reveal specific issues within the vehicle's systems. Next, inspect the fuel system, including the fuel pump and injectors, to ensure they are functioning correctly, as fuel delivery problems are a common cause of stalling. Following this, examine the ignition system components such as spark plugs and ignition coils for any signs of wear or failure, since faulty ignition can disrupt engine performance. Additionally, ensure the air intake system is clear of obstructions, as a clogged air filter can hinder airflow and lead to stalling. Don't forget to check critical sensors like the mass airflow and throttle position sensors, as malfunctioning sensors can significantly impact engine operation. Lastly, assess the electrical system, including the battery and alternator, to rule out any electrical issues that could be causing the stalling. By methodically following these steps, you can effectively diagnose and address the engine stalling issue in your GLS450.

What are the common problems that could cause the engine to stall in a 2022 Mercedes-Benz GLS450?

When diagnosing engine stalling in a 2022 Mercedes-Benz GLS450, it's crucial to consider several common problems that may arise. One significant area to investigate is the fuel system, where a clogged fuel filter or a failing fuel pump can disrupt the flow of fuel to the engine, leading to stalling. Additionally, the electrical system plays a vital role; malfunctions in the ignition system or faulty sensors can interrupt the engine's operation. Air intake and exhaust systems are also critical; any blockages or malfunctions can hinder engine performance, resulting in stalling. Overheating is another concern, often stemming from cooling system failures, which can cause the engine to shut down to prevent damage. Lastly, transmission issues, such as a faulty torque converter or problems with transmission fluid, can contribute to engine stalling. By understanding these potential issues and addressing them promptly, you can ensure the smooth operation of your vehicle and prevent further complications. Regular maintenance and timely repairs are essential in keeping your GLS450 running efficiently.

How urgent is it to address the engine stalling issue in a 2022 Mercedes-Benz GLS450?

Addressing the engine stalling issue in a 2022 Mercedes-Benz GLS450 is of utmost urgency due to the significant safety risks it poses. When an engine stalls unexpectedly, it can lead to a sudden loss of power, increasing the likelihood of accidents or dangerous driving situations. Moreover, neglecting this issue can result in more severe damage to the engine and other vital components, leading to costly repairs down the line. Therefore, it is crucial for vehicle owners to prioritize resolving engine stalling symptoms promptly. By doing so, not only can they ensure their safety on the road, but they can also maintain the overall health and performance of their vehicle, preventing further complications that could arise from delayed action.

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2022 Mercedes-Benz GLS450 Engine Stalling: Causes & Repairs