2023 Mercedes-Benz GLS63 AMG Is Leaking Oil

Address Oil Leaks in 2023 Mercedes-Benz GLS63 AMG for a Smooth Ride

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Reviewed by
Aisha
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 2023 Mercedes-Benz GLS63 AMG 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 2023 Mercedes-Benz GLS63 AMG 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 first steps to diagnose the oil leak in a 2023 Mercedes-Benz GLS63 AMG?

When diagnosing an oil leak in a 2023 Mercedes-Benz GLS63 AMG, it's crucial to follow a methodical approach that prioritizes simpler checks before delving into more complex diagnostics. Begin with a comprehensive visual inspection of both the engine and undercarriage, searching for any visible signs of oil, such as puddles or stains. Next, assess the oil levels to determine if there has been a significant drop, which could indicate a leak. Focus on the oil filter and drain plug, as these are common sources of leaks; ensure they are properly tightened and free from oil residue. Additionally, inspect the gaskets and seals around critical components like the oil pan and valve cover for any signs of wear or damage. If the leak remains undetected, consider conducting a pressure test on the oil system to uncover hidden leaks. For a more precise identification, adding UV dye to the engine oil can help illuminate the leak's exact location when viewed under a UV light. Should these steps fail to reveal the source of the leak, it may be necessary to consult a qualified mechanic or dealership for a thorough diagnosis and repair. By adhering to this structured diagnostic process, you can effectively identify and resolve the oil leak issue in your vehicle.

What are the common causes of oil leaks in a 2023 Mercedes-Benz GLS63 AMG?

When dealing with oil leaks in a 2023 Mercedes-Benz GLS63 AMG, it's crucial to understand the common problems that can arise. One of the primary culprits is degraded or damaged gaskets and seals, particularly the valve cover gasket, oil pan gasket, and camshaft seals, which can deteriorate over time and lead to leaks. Additionally, the oil filter housing and oil cooler seals may wear out or become damaged, contributing to oil leakage. Another frequent issue is a faulty oil drain plug or its gasket, which can allow oil to escape from the oil pan. In some cases, a cracked or damaged oil pan itself can be the source of the leak. It's also important to monitor oil levels, as overfilling can create excess pressure on seals and gaskets, resulting in leaks. Addressing these issues promptly is essential to maintain engine health and performance, making regular inspections and maintenance vital for any DIY enthusiast looking to keep their vehicle in top condition.

How urgent is it to address the oil leak in my 2023 Mercedes-Benz GLS63 AMG?

Addressing an oil leak in your 2023 Mercedes-Benz GLS63 AMG is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which is vital for the smooth operation of your vehicle. The risk of a breakdown increases significantly as the oil level drops, potentially leaving you stranded. Moreover, oil leaks can create hazardous conditions, as oil dripping onto hot engine components poses a fire risk, endangering both you and your vehicle. By taking prompt action to repair the leak, you not only safeguard your engine from further damage but also prevent costly repairs down the line. Therefore, it is crucial to prioritize this issue to maintain the performance and safety of your Mercedes-Benz GLS63 AMG.

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2023 Mercedes-Benz GLS63 AMG Oil Leak Causes & Repairs