2017 Toyota Prius Prime Is Leaking Oil

Diagnosing Oil Leak Sources in Your 2017 Toyota Prius Prime and Recommended Repair Solutions

Find Repair Location
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 2017 Toyota Prius Prime 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 2017 Toyota Prius Prime 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 2017 Toyota Prius Prime?

To effectively diagnose an oil leak in your 2017 Toyota Prius Prime, begin by locating the source of the leak. Start with a visual inspection under the vehicle to identify any oil pooling or dripping, which can help narrow down the potential areas of concern. Next, inspect the oil pan for cracks or damage, as well as ensuring that the bolts are securely tightened. The oil filter should also be checked for proper installation and any signs of leakage. Don’t overlook the oil drain plug; ensure it is tight and free from leaks. Additionally, examine all gaskets and seals, such as the valve cover and oil pan gaskets, for wear or damage that could contribute to the leak. It’s also wise to inspect the oil cooler lines for any signs of leaks. Throughout this process, monitor your oil levels closely, as a significant drop can indicate a leak. If you are unable to pinpoint the source of the leak after these checks, consulting a mechanic may be necessary for a more thorough diagnosis and repair. By following this structured approach, you can efficiently identify and address the oil leak issue in your vehicle.

What are the common causes of oil leaks in a 2017 Toyota Prius Prime?

When dealing with oil leaks in a 2017 Toyota Prius Prime, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can deteriorate over time, leading to leaks. Similarly, the valve cover gasket is another component that can wear out, allowing oil to escape from the engine. Additionally, a faulty or improperly installed oil filter can contribute to leaks, making it essential to ensure that this part is correctly fitted during oil changes. Another potential source of oil leaks is a loose or damaged oil drain plug, which can result in oil seeping from the oil pan. In more severe cases, a cracked engine block may be the cause of the leak, although this is less common. Addressing these issues promptly is vital to prevent further engine damage, and regular maintenance checks can help catch these problems early, ensuring your Prius Prime remains in optimal condition.

How urgent is it to address the oil leak in my 2017 Toyota Prius Prime?

Addressing an oil leak in your 2017 Toyota Prius Prime is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which compromises the engine's lubrication and can result in severe damage over time. Furthermore, the risk of engine overheating or even catastrophic engine failure increases when oil leaks are left unaddressed. Beyond mechanical issues, there are safety hazards to consider; leaking oil can drip onto hot engine components, creating a fire risk that endangers both the vehicle and its occupants. By tackling the oil leak promptly, you not only safeguard your vehicle's performance and longevity but also protect yourself and others on the road. Therefore, it is crucial to act swiftly to mitigate these risks and ensure the continued health of your Prius Prime.

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.

2017 Toyota Prius Prime Oil Leak Causes & Solutions