2019 Toyota Corolla Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2019 Toyota Corolla and How to Address Them Effectively

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Reviewed by
Andrew Hajjar
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 Toyota Corolla 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 Toyota Corolla 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.

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 Toyota Corolla?

To effectively diagnose an oil leak in your 2019 Toyota Corolla, begin with a thorough visual inspection of the engine components, focusing on areas like the oil pan, oil filter, and valve cover gasket, as these are common leak points. Ensure your vehicle is parked on a level surface to facilitate a clear view. Next, check the oil level using the dipstick; a significant drop may indicate a leak. Pay close attention to the oil filter and drain plug, as these can sometimes loosen over time, leading to leaks. Additionally, inspect the ground where you typically park for any oil stains, which can help pinpoint the leak's origin. For more elusive leaks, consider adding UV dye to the oil, allowing you to use a UV light to trace the source effectively. If these steps do not reveal the leak, or if the problem appears complicated, it’s wise to consult a professional mechanic for a comprehensive diagnosis and repair. By following this structured approach, you can systematically identify and address the oil leak issue in your vehicle.

What are the common causes of oil leaks in a 2019 Toyota Corolla?

When dealing with oil leaks in a 2019 Toyota Corolla, it's crucial to understand the common problems that may arise. One frequent issue is a worn or damaged oil pan gasket, which can lead to oil seepage over time. Similarly, valve cover gasket leaks are prevalent, as these gaskets can deteriorate, allowing oil to escape from the engine. Additionally, problems with the oil filter, such as improper installation or looseness, can also result in leaks. Another area to inspect is the oil drain plug; if it is damaged or not tightened correctly, it can cause oil to leak from the oil pan. Lastly, cracks in engine components can lead to significant oil leaks, so it's essential to check for any visible damage. Addressing these issues promptly is vital to maintaining your vehicle's performance and preventing further engine damage. Regular maintenance and inspections can help you catch these problems early, ensuring your Corolla runs smoothly.

How urgent is it to address the oil leak in a 2019 Toyota Corolla?

Addressing an oil leak in your 2019 Toyota Corolla is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring an oil leak can lead to a rapid decrease in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication can result in severe engine damage over time, leading to costly repairs or even complete engine failure. Additionally, an oil leak can cause the engine to overheat, further exacerbating the risk of significant mechanical issues. Beyond mechanical concerns, oil leaks pose a serious safety hazard; oil dripping onto hot engine parts can ignite, creating a fire risk that endangers both the vehicle and its occupants. Regularly monitoring for oil leaks and addressing them promptly is essential for maintaining the health, performance, and safety of your vehicle. By taking swift action, you can ensure the longevity and reliability of your Corolla, preventing minor issues from escalating into major problems.

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2019 Toyota Corolla Oil Leak Reasons & Repair Costs