2014 Mercedes-Benz CL63 AMG Is Leaking Oil

Address Oil Leaks in Your 2014 Mercedes-Benz CL63 AMG 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 2014 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 2014 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 steps to diagnose the oil leak in a 2014 Mercedes-Benz CL63 AMG?

To effectively diagnose an oil leak in a 2014 Mercedes-Benz CL63 AMG, start with a thorough visual inspection of both the engine and the area beneath the vehicle. Look for any visible signs of oil accumulation or dripping, as these can provide immediate clues about the leak's source. Next, check the oil levels to assess if there has been a significant loss, which may indicate a leak. Pay special attention to the oil filter and drain plug, as these components are common culprits; ensure they are secure and free from leaks. Additionally, inspect the gaskets and seals, particularly around the valve cover, oil pan, and camshaft, for any signs of wear or damage. If the leak remains elusive, consider performing a pressure test on the oil system to uncover hidden leaks. For a more advanced method, adding UV dye to the oil can help identify leaks under UV light. If these steps do not reveal the source of the leak, consulting a qualified mechanic may be necessary for a professional diagnosis and repair. By following this structured approach, you can systematically identify and address oil leaks in your vehicle.

What are the common causes of oil leaks in a 2014 Mercedes-Benz CL63 AMG?

When dealing with oil leaks in a 2014 Mercedes-Benz CL63 AMG, it's crucial to understand the common culprits that may be at play. One frequent issue is the degradation of valve cover gaskets, which can lead to noticeable oil seepage over time. Additionally, the oil pan gasket is another area of concern; wear and tear can cause it to fail, resulting in oil leaking from the engine's base. The oil filter housing gasket is also prone to faults, often leading to leaks around the oil filter itself. Furthermore, the seals surrounding the oil cooler can deteriorate, contributing to oil loss from this component. Lastly, the rear main seal, located at the back of the engine, can develop leaks as it ages, causing oil to drip from the rear. Addressing these leaks promptly is essential to prevent engine damage and maintain optimal vehicle performance, making regular inspections and maintenance vital for any DIY enthusiast.

How urgent is it to address the oil leak in a 2014 Mercedes-Benz CL63 AMG?

Addressing an oil leak in your 2014 Mercedes-Benz CL63 AMG is not just a matter of routine maintenance; it is a pressing concern that demands immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which is vital for the smooth operation of your vehicle. The risk of a breakdown increases significantly as oil levels drop, potentially leaving you stranded. Moreover, the safety implications cannot be overlooked; leaking oil can drip onto hot engine components, creating a fire hazard that endangers both you and your vehicle. By tackling the oil leak promptly, you not only safeguard your engine from further damage but also protect yourself from costly repairs down the line. Therefore, if you notice any signs of an oil leak, it is crucial to act swiftly to maintain the performance and safety of your Mercedes-Benz.

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