Lexus ES350 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your Lexus ES350 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 Lexus ES350 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 Lexus ES350 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.

How to Diagnose and Fix Oil Leaks in a Lexus ES350?

When tackling oil leaks in your Lexus ES350, it's essential to adopt a systematic diagnostic approach. Start by identifying the source of the leak, which often involves visually inspecting common areas such as gaskets, oil lines, and engine components. Look for signs of oil pooling or staining, as these can indicate where the leak originates. Once you have a potential source, check for common issues like gasket failures or ruptured oil lines, which are frequent culprits in this model. Pay particular attention to the oil system components, including the oil pan, oil filter, and oil cooler, as these can also be prone to leaks. If you suspect the issue lies with the engine gaskets, a thorough examination for wear and tear is crucial, as damaged gaskets can lead to significant oil loss. Additionally, be aware of the VVT-i oil line, known for its tendency to burst, which may require immediate repair to avoid further engine damage. If your inspection reveals complex issues or if you're uncertain about the diagnosis, consulting a certified mechanic is advisable. They can provide a professional assessment and help you understand potential repair costs, ensuring that your Lexus ES350 remains in optimal condition. By following this structured approach, you can effectively diagnose and address oil leaks, maintaining the performance and longevity of your vehicle.

How to Diagnose and Fix Oil Leaks in a Lexus ES350?

When tackling oil leaks in a Lexus ES350, it's essential to understand the common problems that can arise within the vehicle's oil system. One of the primary culprits is gasket failure, which can occur due to age or wear, leading to leaks around the engine. Additionally, ruptured oil lines, particularly the VVT-i oil line, are notorious for causing significant oil loss and should be inspected closely. It's also important to examine the oil pan and oil filter for any signs of damage, as these components can contribute to leaks if not properly maintained. By being aware of these common issues, you can more effectively diagnose the source of the leak and take the necessary steps to repair it, ensuring your Lexus ES350 remains in optimal condition. If the problem seems beyond your expertise, consulting a certified mechanic is always a wise choice to avoid further complications.

How Urgent is an Oil Leak in a Lexus ES350?

When faced with an oil leak in your Lexus ES350, understanding the urgency of the situation is crucial for both your safety and the longevity of your vehicle. Ignoring even a minor leak can lead to severe consequences, as oil is essential for lubricating engine components and preventing overheating. A small seepage may seem manageable, but if left unchecked, it can escalate into a major leak, resulting in rapid oil loss and potential engine failure. Additionally, if the oil pressure warning light activates, it signals a critical drop in oil levels, necessitating immediate action to avoid catastrophic damage. Visible signs of oil pooling under the vehicle or around the engine should not be overlooked, as they indicate a serious issue that could compromise your vehicle's performance and safety. Unusual engine noises or a decrease in power are further indicators that the leak is affecting engine function, making it imperative to address the problem promptly. Ultimately, prioritizing the repair of an oil leak not only safeguards your vehicle's performance but also ensures a safer driving experience, preventing hazardous conditions that could arise from inadequate lubrication.

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