2011 Mercedes-Benz CL63 AMG Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2011 Mercedes-Benz CL63 AMG and How to Address Them

Find Repair Location
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 2011 Mercedes-Benz CL63 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 2011 Mercedes-Benz CL63 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.

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 initial diagnostic steps to identify the source of the oil leak in a 2011 Mercedes-Benz CL63 AMG?

To effectively identify the source of an oil leak in your 2011 Mercedes-Benz CL63 AMG, start with a thorough visual inspection of both the engine bay and the area beneath the vehicle. Look for any signs of oil accumulation, such as puddles or drips, which can provide immediate clues about the leak's location. Next, check the oil levels to determine if there has been a significant drop, indicating a potential leak. Pay special attention to the oil filter and drain plug, as these components are common culprits for leaks; ensure they are secure and free from oil residue. Additionally, inspect the gaskets and seals around the oil pan, valve cover, and oil filter housing, as these areas are prone to wear and leakage. If the source remains elusive, consider performing a pressure test on the oil system to help pinpoint the leak's exact location. For a more advanced approach, adding UV dye to the engine oil can be beneficial; running the engine and using a UV light will illuminate the leak, making it easier to identify. By following these steps, you can systematically diagnose the oil leak and take the necessary actions to resolve the issue.

What are the common causes of oil leaks in a 2011 Mercedes-Benz CL63 AMG?

When diagnosing oil leaks in a 2011 Mercedes-Benz CL63 AMG, it's crucial to focus on several key components that are prone to wear and tear. One of the most frequent culprits is the valve cover gaskets, which can deteriorate over time, leading to noticeable oil seepage around the valve covers. Additionally, the oil pan gasket is another area to inspect, as it can become brittle or damaged, resulting in leaks. The oil filter housing gasket is also a common source of leaks, particularly if it has failed, allowing oil to escape around the filter area. Furthermore, the seals on the oil cooler can wear out, causing oil to leak from the cooler assembly, while the rear main seal, located at the back of the engine, can also fail, leading to leaks at the rear. Addressing these issues promptly is essential to maintain the vehicle's performance and prevent further engine damage. Regular inspections and maintenance can help identify these leaks early, allowing for effective DIY repairs.

How urgent is it to address the oil leak in my 2011 Mercedes-Benz CL63 AMG?

Addressing an oil leak in your 2011 Mercedes-Benz CL63 AMG is not just a matter of convenience; it is a critical issue that demands immediate attention. The risk of engine damage is significant, as a decrease in oil levels can lead to inadequate lubrication, resulting in increased friction and heat that may ultimately compromise engine integrity. Moreover, oil leaks pose environmental hazards, as spilled oil can contaminate soil and water sources, making prompt repairs essential for ecological safety. Safety is another concern, as oil on road surfaces can create slippery conditions, heightening the risk of accidents for both you and other drivers. Financially, delaying repairs can lead to more extensive damage, escalating repair costs that could have been avoided with timely action. Therefore, it is imperative to inspect and repair any oil leaks as soon as possible to safeguard your vehicle's performance, protect the environment, and ensure the safety of all road users.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.