2017 Lexus ES300h Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2017 Lexus ES300h and How to Address Them 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 2017 Lexus ES300h 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 Lexus ES300h 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 are the initial steps to diagnose the oil leak in a 2017 Lexus ES300h?

When diagnosing an oil leak in a 2017 Lexus ES300h, start by locating the source of the leak, which often involves a thorough inspection of the engine bay, under the vehicle, and the parking area for any visible oil spots. Next, check the oil level to determine if it has dropped significantly, as this could indicate a serious leak. Pay close attention to the oil filter and drain plug, as these components can sometimes be the culprits; ensure they are secure and free from leaks. Additionally, examine the gaskets and seals for any signs of wear or damage, as these are common sources of oil leaks. If the leak remains elusive, consider adding UV dye to the engine oil, which can help illuminate the leak under UV light. Finally, if necessary, performing a pressure test on the oil system can help identify leaks in hoses or fittings. By following these steps, you can effectively diagnose and address an oil leak in your Lexus, ensuring your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2017 Lexus ES300h?

When dealing with oil leaks in a 2017 Lexus ES300h, it's crucial to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear out over time, leading to leaks at the bottom of the engine. Similarly, the valve cover gasket is another area to inspect, as it can deteriorate and allow oil to escape from the top of the engine. Additionally, a faulty oil filter or a damaged oil filter housing gasket can also be responsible for leaks, so checking these components is essential. Another potential source of oil leaks is the oil cooler lines; if these lines are worn or cracked, they can lead to significant oil loss. Lastly, various seals within the engine, such as camshaft and crankshaft seals, can wear out and contribute to leaks. By regularly inspecting these areas and addressing any signs of wear or damage, DIY enthusiasts can help maintain their vehicle's performance and prevent further engine issues.

How urgent is it to address the oil leak in my 2017 Lexus ES300h?

Addressing an oil leak in your 2017 Lexus ES300h is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. An oil leak can significantly reduce the oil levels in your engine, leading to inadequate lubrication of vital components. This lack of lubrication can cause severe wear and tear, ultimately resulting in costly engine damage. Moreover, neglecting an oil leak can lead to overheating, which poses a serious risk of engine failure. The situation is further exacerbated by the safety hazards associated with leaking oil, as it can drip onto hot engine parts, increasing the risk of a fire. Therefore, it is crucial to address any signs of an oil leak promptly to safeguard your vehicle's performance and ensure your safety on the road. Taking swift action not only protects your investment but also prevents potential accidents, making it essential for any DIY enthusiast to prioritize this issue.

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2017 Lexus ES300h Oil Leak Causes & Fixes | RepairPal