2016 Mercedes-Benz CLS63 AMG S Is Leaking Oil

Address Oil Leaks in Your 2016 Mercedes-Benz CLS63 AMG S Effectively

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Reviewed by
Bo Fader
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 2016 Mercedes-Benz CLS63 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 2016 Mercedes-Benz CLS63 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.

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 are the potential causes of an oil leak in a 2016 Mercedes-Benz CLS63 AMG S, and how should I diagnose them?

When diagnosing an oil leak in your 2016 Mercedes-Benz CLS63 AMG S, it's essential to start with a thorough visual inspection of the engine and undercarriage. Look for any visible signs of oil pooling or streaks that could indicate the source of the leak. Begin by checking the oil levels regularly; a sudden drop can signal a leak that needs immediate attention. Inspect the gaskets and seals, particularly around the oil filter, oil pan, and valve cover, as these are common culprits for leaks due to wear and tear. Ensure that the oil drain plug is securely tightened, as a loose or damaged plug can lead to significant oil loss. If the leak remains elusive, consider conducting a pressure test to help pinpoint the source. Additionally, examine the oil cooler lines and the oil pan for any signs of damage or cracks. If you are unable to identify the leak after these steps, it may be prudent to consult a professional mechanic for a comprehensive diagnosis, ensuring that your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2016 Mercedes-Benz CLS63 AMG S?

When dealing with oil leaks in a 2016 Mercedes-Benz CLS63 AMG S, it's crucial to understand the common problems that may arise. One frequent culprit is the oil pan gasket, which can degrade over time, leading to leaks that can compromise engine performance. Similarly, valve cover gaskets are prone to wear and can develop leaks, allowing oil to escape from the engine. Another area to inspect is the oil filter housing gasket; if this component fails, it can result in oil leaking around the oil filter, creating a mess and potential engine damage. Additionally, the seals around the oil cooler can deteriorate, causing leaks in that area as well. Lastly, the rear main seal is another critical point to check, as it can wear out and lead to significant oil loss from the back of the engine. By being aware of these common issues, DIY enthusiasts can take proactive steps to inspect and address oil leaks, ensuring their vehicle remains in optimal condition. Regular maintenance and timely repairs are key to preventing further complications and maintaining the performance of the CLS63 AMG S.

How urgent is it to address the oil leak in my 2016 Mercedes-Benz CLS63 AMG S?

Addressing an oil leak in your 2016 Mercedes-Benz CLS63 AMG S 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, as the lack of proper lubrication can cause friction and overheating, ultimately resulting in costly repairs or even engine failure. Additionally, oil leaks pose significant safety hazards, as oil can drip onto hot engine components, increasing the risk of fire. The longer you wait to address the leak, the more extensive the damage can become, leading to more complicated repairs and higher costs. Therefore, it is crucial to inspect and repair any oil leaks as soon as they are detected to ensure the safety and longevity of your vehicle.

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