2020 Lexus RX350L Is Leaking Oil

Troubleshooting Oil Leaks in Your 2020 Lexus RX350L: Common Causes and Repair Solutions

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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 2020 Lexus RX350L 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 2020 Lexus RX350L 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

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 2020 Lexus RX350L?

To effectively diagnose an oil leak in your 2020 Lexus RX350L, start by locating the source of the leak. Begin by inspecting the area beneath the vehicle for any visible signs of oil, such as drips or puddles. This initial observation can provide valuable clues about where the leak may be originating. Next, check the oil levels in the engine; a significant drop in oil levels can indicate a leak that needs attention. Pay close attention to the oil filter and drain plug, as these components are common culprits for leaks. Ensure they are secure and free from any signs of oil seeping. Additionally, examine the gaskets and seals within the engine, as wear or damage in these areas can lead to leaks. For a more thorough investigation, consider using UV dye in the engine oil, which can help illuminate the leak's source when viewed under UV light. By following these straightforward steps, you can effectively identify and diagnose the oil leak, setting the stage for necessary repairs.

What are the common causes of oil leaks in a 2020 Lexus RX350L?

When dealing with oil leaks in a 2020 Lexus RX350L, it's essential to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear down over time, leading to leaks. Additionally, worn valve cover gaskets can allow oil to escape from the top of the engine, creating noticeable leaks. Another area to inspect is the oil filter housing gasket; if this component is faulty, it can result in oil seeping around the oil filter. Furthermore, damaged oil cooler lines can also be a source of leaks, as they may develop cracks or holes. Lastly, don't overlook the drain plug; if it is loose or damaged, it can lead to significant oil loss from the oil pan. By regularly checking these components and addressing any issues promptly, DIYers can help maintain their vehicle's performance and prevent further engine damage.

How urgent is it to address the oil leak in my 2020 Lexus RX350L?

When it comes to your 2020 Lexus RX350L, addressing an oil leak should be treated as a high priority. Ignoring this issue can lead to severe consequences, including engine damage due to insufficient lubrication. Oil is crucial for reducing friction among engine components, and a leak can quickly deplete your oil levels, resulting in increased wear and tear. Moreover, an oil leak poses safety risks; if oil drips onto hot engine parts, it can ignite and lead to a fire hazard. Regularly checking for leaks and addressing them immediately not only enhances your vehicle's performance but also extends its lifespan, ultimately saving you from costly repairs. If you notice any signs of an oil leak, such as oil spots under your vehicle or a burning smell, it’s essential to inspect the source of the leak and consider a DIY fix or consult a qualified mechanic to prevent further complications.

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