2019 BMW 440i Gran Coupe Is Leaking Oil

Address Oil Leaks in Your 2019 BMW 440i Gran Coupe Effectively

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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 BMW 440i Gran Coupe 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 BMW 440i Gran Coupe 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 steps should I take to diagnose the oil leak in my 2019 BMW 440i Gran Coupe?

To effectively diagnose an oil leak in your 2019 BMW 440i Gran Coupe, begin by systematically identifying the source of the leak. Start with a visual inspection under the vehicle, looking for any signs of oil pooling or dripping on the ground. This initial step can often reveal the leak's location. Next, check the oil level in the engine; a significantly low level may indicate a leak that needs addressing. Pay close attention to the oil filter and drain plug, as these components are common culprits for leaks due to wear or improper installation. Additionally, inspect the gaskets and seals around the engine, as any signs of damage or deterioration can lead to oil escaping. If the leak remains elusive, consider using UV dye, which can help pinpoint the source when illuminated with a UV light after running the engine. If these steps do not yield results or if you feel uncertain about the diagnosis, consulting a professional mechanic is a wise choice, as they can provide a comprehensive evaluation and recommend necessary repairs. By following this structured approach, you can effectively identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2019 BMW 440i Gran Coupe?

When dealing with oil leaks in a 2019 BMW 440i Gran Coupe, it's crucial to understand the common culprits that may be at play. One of the primary causes is the degradation of gaskets and seals, which can occur over time due to exposure to heat and engine vibrations. This wear can lead to leaks that may not be immediately visible. Additionally, the oil pan itself can suffer damage from road debris or corrosion, resulting in oil escaping from the bottom of the engine. Another frequent issue is the valve cover gasket, which can wear out and allow oil to seep out, often noticeable by oil pooling on top of the engine. The oil filter housing gasket is also a potential source of leaks; if it fails, it can lead to significant oil loss. Lastly, don’t overlook the drain plug seal, as a worn or improperly tightened seal can cause oil to leak from the oil pan. By being aware of these common issues, DIY enthusiasts can take proactive steps to inspect and address oil leaks, ensuring their BMW remains in optimal condition. Regular maintenance and timely repairs are key to preventing further damage and maintaining engine performance.

How urgent is it to address an oil leak in a 2019 BMW 440i Gran Coupe?

Addressing an oil leak in a 2019 BMW 440i Gran Coupe is of utmost importance due to the serious implications of neglecting this issue. An oil leak can lead to a significant loss of lubrication within the engine, which increases friction and heat, potentially resulting in severe engine damage. This not only jeopardizes the vehicle's performance but can also lead to costly repairs that could have been avoided with timely intervention. Furthermore, an oil leak poses a safety risk, as leaking oil can drip onto hot engine components, creating a fire hazard. For DIY enthusiasts, it is crucial to regularly monitor oil levels and inspect for leaks, as early detection can prevent a cascade of mechanical failures and ensure the vehicle remains safe and reliable. By addressing oil leaks promptly, you not only protect your investment but also enhance the longevity and efficiency of your BMW.

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