2017 Lexus RX350 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2017 Lexus RX350 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 2017 Lexus RX350 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 RX350 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.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

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 2017 Lexus RX350?

When diagnosing an oil leak in your 2017 Lexus RX350, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the area where you typically park for any oil puddles or drips, as this can provide clues about the leak's origin. Next, check the oil level in the engine; a significant drop may indicate a leak that needs addressing. Move on to a visual inspection of the engine, focusing on common leak points such as the valve cover gasket, oil filter, oil pan, and drain plug. Pay special attention to the oil filter and drain plug, ensuring they are secure and free from leaks. Additionally, examine the gaskets and seals for any signs of wear or damage that could contribute to the leak. If the source remains elusive, consider using UV dye in the engine oil, which can help pinpoint the leak when illuminated with a UV light. By following these steps, you can effectively diagnose the oil leak and determine the necessary repairs for your vehicle.

What are the common causes of oil leaks in a 2017 Lexus RX350?

When dealing with oil leaks in a 2017 Lexus RX350, 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 noticeable leaks. Additionally, valve cover gaskets are prone to deterioration, often resulting in oil seeping from the top of the engine. Another area to inspect is the oil filter housing gasket; if this component fails, it can create leaks around the oil filter, making it essential to check during routine maintenance. The rear main seal, located at the back of the engine, is another potential source of leaks, as it can develop issues that cause oil to drip onto the ground. Lastly, oil cooler lines, particularly at their connections, can also be a source of oil seepage. By being aware of these common problems, DIYers can take proactive steps to inspect and address oil leaks, ensuring their vehicle remains in optimal condition and preventing further engine damage. Regular maintenance and timely inspections are key to catching these issues early.

How urgent is it to address the oil leak in a 2017 Lexus RX350?

Addressing an oil leak in your 2017 Lexus RX350 is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. An oil leak can significantly lower your vehicle's oil levels, leading to inadequate lubrication of essential engine components. This lack of lubrication increases friction and wear, which can ultimately result in severe engine damage and costly repairs. Moreover, if the oil leaks onto hot engine parts, it creates a fire hazard that could endanger both you and your vehicle. Additionally, oil leaks pose environmental risks, as spilled oil can contaminate soil and water sources, harming local wildlife and ecosystems. Therefore, it is crucial to act swiftly and address any signs of an oil leak to safeguard your vehicle's performance, ensure your safety, and protect the environment.

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