2024 Mercedes-Benz GLS450 Is Leaking Oil

Diagnosing Oil Leak Sources in Your 2024 Mercedes-Benz GLS450 and Recommended Repair Solutions

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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 2024 Mercedes-Benz GLS450 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 2024 Mercedes-Benz GLS450 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

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 steps to diagnose the oil leak in a 2024 Mercedes-Benz GLS450?

To effectively diagnose an oil leak in your 2024 Mercedes-Benz GLS450, begin with a thorough visual inspection of the engine bay and undercarriage, looking for any signs of oil accumulation. Pay special attention to the area where the vehicle is parked, as oil spots can indicate the leak's origin. Next, check the oil levels to assess if there has been a significant loss, which may suggest a more serious problem. Focus on the gaskets and seals, particularly the valve cover gasket, oil pan gasket, and oil filter housing gasket, as these are common sources of leaks. Additionally, inspect the oil filter for any signs of damage or leakage, and ensure the drain plug is secure and undamaged. If the source of the leak is still unclear, consider performing a pressure test to help pinpoint the exact location. If these steps do not resolve the issue, it is wise to consult a qualified mechanic or dealership for a comprehensive diagnosis and repair. By following this methodical approach, you can efficiently identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2024 Mercedes-Benz GLS450?

When dealing with oil leaks in a 2024 Mercedes-Benz GLS450, it's essential to understand the common problems that can arise. One of the primary culprits is degraded or damaged gaskets and seals, such as the valve cover gasket or oil pan gasket, which can deteriorate over time and lead to leaks. Additionally, worn or damaged oil filters and drain plugs can also contribute to oil leakage, making regular inspections crucial. Another factor to consider is the oil level; overfilling can create excess pressure, resulting in leaks. Furthermore, cracked or damaged oil pans can be a significant source of oil loss, while faulty oil cooler lines or connections may also lead to leaks. By being aware of these issues, DIY enthusiasts can take proactive steps to inspect and maintain their vehicle, ensuring that any oil leak problems are addressed promptly to prevent further engine damage. Regular maintenance checks and timely repairs can help keep your GLS450 running smoothly and efficiently.

How urgent is it to address the oil leak in a 2024 Mercedes-Benz GLS450?

Addressing an oil leak in a 2024 Mercedes-Benz GLS450 is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which increases friction and heat within the engine components. This can result in costly repairs and a significant decrease in vehicle performance. Moreover, oil leaks pose safety risks, as oil can drip onto hot engine parts, creating a fire hazard that endangers both the vehicle and its occupants. Additionally, the environmental impact of leaking oil cannot be overlooked, as it can contaminate soil and water sources, leading to broader ecological damage. Therefore, if you suspect an oil leak, it is crucial to act swiftly and have your vehicle inspected by a qualified mechanic to prevent these serious consequences.

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2024 Mercedes-Benz GLS450 Oil Leak Causes & Repair Costs