2015 Mercedes-Benz GLK350 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2015 Mercedes-Benz GLK350 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 2015 Mercedes-Benz GLK350 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 2015 Mercedes-Benz GLK350 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 steps should I take to diagnose the oil leak in my 2015 Mercedes-Benz GLK350?

To effectively diagnose an oil leak in your 2015 Mercedes-Benz GLK350, begin by visually inspecting the area beneath your vehicle for any signs of oil pooling or dripping, as this can help you pinpoint the leak's location. Next, turn your attention to the engine components, focusing on the oil filter, oil pan, valve cover gasket, and oil drain plug, as these are common culprits for leaks. Checking the oil level is also crucial; a significant drop may indicate a leak that needs immediate attention. Pay special attention to the oil filter to ensure it is securely installed and free from damage, as a faulty filter can lead to leaks. Additionally, examine the oil pan for any signs of wear or loose bolts, which could compromise its integrity. The valve cover gasket should also be inspected for any oil seepage, as it can deteriorate over time. Lastly, ensure that the oil drain plug is tight, as a loose plug can easily result in oil loss. By systematically following these steps, you can accurately diagnose the source of the oil leak and take the necessary steps to resolve the issue.

What are the common causes of oil leaks in a 2015 Mercedes-Benz GLK350?

When dealing with oil leaks in a 2015 Mercedes-Benz GLK350, it's crucial to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can lead to noticeable oil seepage over time. Additionally, valve cover gaskets are prone to wear, resulting in leaks from the top of the engine that can be easily spotted. Another area to inspect is the oil filter housing gasket; if this component fails, it can create leaks around the oil filter, making it essential to check during routine maintenance. Timing cover leaks are also a concern, often stemming from damaged gaskets or seals that allow oil to escape. Lastly, oil cooler seal issues can contribute to leaks within the engine compartment, further complicating the situation. By being aware of these common causes, DIY enthusiasts can take proactive steps to diagnose and address oil leaks, ensuring their vehicle remains in optimal condition. Regular inspections and timely repairs are key to preventing more significant engine damage down the line.

How urgent is it to address the oil leak in a 2015 Mercedes-Benz GLK350?

Addressing an oil leak in your 2015 Mercedes-Benz GLK350 is not just a matter of routine maintenance; it is a pressing issue 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 and potential engine damage. Moreover, the presence of leaking oil poses a serious fire hazard, especially if it comes into contact with hot engine parts. Ignoring this issue can exacerbate the damage, leading to costly repairs down the line. Therefore, if you notice any signs of an oil leak, it is crucial to act swiftly to prevent further complications and ensure the safety and longevity of your vehicle. Taking prompt action not only protects your engine but also enhances your overall driving experience.

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