2019 Mercedes-Benz GLC63 AMG S Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2019 Mercedes-Benz GLC63 AMG S 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 2019 Mercedes-Benz GLC63 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 2019 Mercedes-Benz GLC63 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 steps should I take to diagnose the oil leak in my 2019 Mercedes-Benz GLC63 AMG S?

To effectively diagnose an oil leak in your 2019 Mercedes-Benz GLC63 AMG S, begin with a systematic approach that prioritizes simplicity before delving into more complex assessments. Start by locating the leak; check beneath the vehicle for any visible oil spots or puddles, as this can provide immediate clues about the leak's origin. Next, inspect the engine bay for signs of oil around critical components such as the oil filter, oil pan, and valve cover gasket, as these areas are common culprits for leaks. It’s also essential to check the oil level in your engine; a significant drop may indicate a leak that needs urgent attention. Pay particular attention to the oil filter, as it can often be a source of leakage due to improper installation or damage. Additionally, examine the oil pan for any cracks or holes that could be contributing to the problem. The valve cover gasket should also be scrutinized for wear or damage, as this is another frequent area for leaks. If these steps do not reveal the source of the leak, or if you feel uncertain about your findings, consulting a qualified mechanic is advisable. They can provide a thorough inspection and a detailed repair plan, ensuring that your vehicle is safe and functioning optimally. By following this diagnostic approach, you can efficiently identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2019 Mercedes-Benz GLC63 AMG S?

When diagnosing oil leaks in a 2019 Mercedes-Benz GLC63 AMG S, it's crucial to understand the common problems that can lead to these issues. One of the primary culprits is a degraded or damaged oil pan gasket, which can deteriorate over time and allow oil to escape. Additionally, worn-out valve cover gaskets are another frequent source of leaks, as they can become compromised and result in oil seeping from the top of the engine. Another area to inspect is the oil filter housing gasket; if this component is faulty, it can lead to leaks around the oil filter. Furthermore, oil cooler lines are susceptible to wear and damage, which can also cause leaks. Lastly, various oil seals throughout the engine may crack or wear out, contributing to oil leaks in different locations. Addressing these issues promptly is essential to maintain the vehicle's performance and prevent potential engine damage, making regular maintenance and inspections vital for any GLC63 AMG S owner.

How urgent is it to address the oil leak in my 2019 Mercedes-Benz GLC63 AMG S?

Addressing an oil leak in your 2019 Mercedes-Benz GLC63 AMG S is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. Ignoring an oil leak can lead to a significant loss of engine oil, which is vital for lubricating moving parts and maintaining optimal engine performance. Without sufficient oil, you risk severe engine damage, which could result in costly repairs or even a complete engine failure. Moreover, an oil leak can create hazardous conditions, as oil dripping onto hot engine components can ignite, posing a serious fire risk. By tackling the leak promptly, you not only safeguard your vehicle's performance but also protect yourself and others on the road from potential safety hazards. Therefore, it is crucial to act swiftly and address any signs of an oil leak to ensure the longevity and reliability of your Mercedes-Benz GLC63 AMG S.

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