2021 Mercedes-Benz GLE63 AMG S Is Leaking Oil

Common Causes of Oil Leaks in Your 2021 Mercedes-Benz GLE63 AMG S and How to Address Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2021 Mercedes-Benz GLE63 AMG S is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
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 2021 Mercedes-Benz GLE63 AMG S is leaking oil?

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.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the potential causes of an oil leak in a 2021 Mercedes-Benz GLE63 AMG S, and how should I diagnose it?

When diagnosing an oil leak in your 2021 Mercedes-Benz GLE63 AMG S, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex issues. Start with a thorough visual inspection of the undercarriage to spot any obvious signs of oil pooling or dripping. Next, monitor your oil levels regularly; a sudden drop can indicate a leak. Pay close attention to the gaskets and seals, as these components are often the culprits behind oil leaks due to wear and tear. Inspect the oil pan and drain plug for any signs of damage or looseness, as these can lead to significant oil loss. Additionally, examine the oil filter and its housing, as a faulty filter can also contribute to leaks. Don't overlook the valve cover gasket, which can show traces of oil if compromised. Lastly, check the oil cooler lines for any leaks or damage. If these initial checks do not reveal the source of the leak, consider conducting a pressure test to accurately pinpoint the issue. By following this structured approach, you can effectively diagnose and address the oil leak, ensuring your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2021 Mercedes-Benz GLE63 AMG S?

When dealing with oil leaks in a 2021 Mercedes-Benz GLE63 AMG S, it's crucial to understand the common problems that can arise. One of the primary culprits is a degraded or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Additionally, worn-out valve cover gaskets may fail to create a proper seal, allowing oil to escape. Another potential issue is a faulty oil filter housing gasket, which can also contribute to oil leakage. Furthermore, the oil cooler lines are susceptible to wear and tear, making them another common source of leaks. Lastly, damaged oil seals, including crankshaft and camshaft seals, can wear out and result in oil escaping from the engine. Addressing these issues promptly is essential to maintain the vehicle's performance and prevent further engine damage. Regular inspections and maintenance can help identify these problems early, ensuring your GLE63 AMG S remains in optimal condition.

How urgent is it to address the oil leak in my 2021 Mercedes-Benz GLE63 AMG S?

Addressing an oil leak in your 2021 Mercedes-Benz GLE63 AMG S is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Ignoring an oil leak can lead to a cascade of problems, including severe engine damage due to low oil levels, which are essential for proper lubrication and performance. The longer you wait, the more likely you are to experience a decline in your vehicle's performance, as the engine components may not operate smoothly without adequate lubrication. Moreover, there are serious safety risks associated with oil leaks, such as the potential for oil to drip onto hot engine parts, which could ignite and lead to a fire. Additionally, oil leaks pose environmental hazards, contaminating soil and water sources, which is another compelling reason to act swiftly. Therefore, it is crucial to have the leak inspected and repaired by a qualified mechanic as soon as possible to ensure your vehicle remains safe, efficient, and environmentally responsible.

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