2010 Mercedes-Benz ML350 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2010 Mercedes-Benz ML350 and How to Address Them

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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 2010 Mercedes-Benz ML350 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 2010 Mercedes-Benz ML350 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.

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 2010 Mercedes-Benz ML350?

When diagnosing an oil leak in a 2010 Mercedes-Benz ML350, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the engine bay and the area beneath the vehicle for any visible oil stains or puddles, which can provide clues about the leak's origin. Next, check the oil level using the dipstick, as a significant drop may indicate a leak. Pay close attention to gaskets and seals around critical components like the oil filter and oil pan, as wear or damage here is a common source of leaks. Additionally, examine the oil filter itself for any signs of leakage, ensuring it is properly tightened or replaced if necessary. Don’t overlook the drain plug; a loose plug can also lead to oil loss, so ensure it is secure and consider replacing the washer if needed. Inspect hoses and lines for any signs of damage or leakage, as these can often be overlooked. If the source remains elusive, a pressure test can help pinpoint the leak's exact location. However, if you find yourself unable to resolve the issue, consulting a qualified mechanic is advisable to ensure a thorough diagnosis and repair. By following this structured approach, you can effectively identify and address oil leaks in your vehicle.

What are the common causes of oil leaks in a 2010 Mercedes-Benz ML350?

When dealing with oil leaks in a 2010 Mercedes-Benz ML350, it's essential to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear down over time, leading to leaks. Similarly, worn valve cover gaskets can allow oil to escape from the top of the engine, creating noticeable leaks. Another area to inspect is the oil filter housing gasket; if this component is faulty, it can result in oil leaking around the oil filter. Additionally, oil cooler lines are prone to wear and tear, which can lead to seepage. Lastly, cracked or damaged oil seals, such as those found around the crankshaft or camshaft, can also contribute to oil leaks. Addressing these issues promptly is crucial, as neglecting them can lead to more severe engine damage. Regular inspections and maintenance can help you catch these problems early, ensuring your vehicle runs smoothly and efficiently.

How urgent is it to address the oil leak in a 2010 Mercedes-Benz ML350?

Addressing an oil leak in your 2010 Mercedes-Benz ML350 is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. Oil is vital for lubricating engine components, and a leak can lead to a significant loss of oil, resulting in inadequate lubrication. This can cause increased friction, which may ultimately damage the engine and lead to costly repairs. Moreover, an oil leak poses serious safety risks, as oil can drip onto hot engine parts, creating a fire hazard. Ignoring this issue can escalate into more severe engine problems over time, potentially resulting in complete engine failure. Therefore, it is crucial to act swiftly and address any signs of an oil leak to ensure the safety and longevity of your vehicle.

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2010 Mercedes-Benz ML350 Oil Leak Causes & Repair Costs