Home FAQ

Does the Lexus RX350 have a transmission filter?

Yes. The Lexus RX 350 uses a traditional automatic transmission that includes a replaceable filter located in the transmission pan, which is typically replaced when the pan is dropped to service the ATF.

Understanding this question involves looking at model-year variations, how the filter is integrated into the transmission path, and what a typical service entails for RX 350 owners.

Transmission filter in the RX 350: what to know

Here are the essentials about whether the RX 350 has a transmission filter, where it resides, and how it is serviced.

Location: Inside the transmission pan; the filter sits in the fluid path feeding the valve body.

Service: Replaced during pan drop; requires new pan gasket and fresh ATF. It’s not typically a DIY filter replacement separate from a pan service.

Year variations: Most RX 350s with conventional automatics use a replaceable filter; access and exact design can vary by generation, so confirm for your year.

Maintenance interval: ATF service intervals vary by year and driving, but a pan drop to replace the filter and refill ATF is part of standard maintenance in many models, commonly around 60,000 miles for normal driving and more often under severe conditions.

Symptoms of a clogged filter: Delayed engagement, rough or slipping shifts, or harsh shifts, especially as ATF becomes dirty. If you notice these, schedule inspection.

Concluding note: The presence of a serviceable filter is typical for RX 350 transmissions; a pan service that replaces the filter is standard practice to refresh fluid and ensure proper operation. Always verify with the owner's manual or a Lexus-certified technician for your exact year and transmission type.

Is the setup the same across all RX 350 years?

In general, newer RX 350 generations with automatic transmissions have a pan-contained filter that is replaced during a full pan service. Earlier RX 350 generations used different transmissions, but a filter in the pan area remains common. For precise procedure, refer to the service manual for your VIN.

Summary

Yes — the Lexus RX 350 has a transmission filter inside the pan, and a typical service involves replacing the filter during an ATF pan drop with a new gasket and fresh fluid. For exact maintenance intervals and procedures, consult the owner's manual or a Lexus-certified technician for your year and model.

Does RX 350 have transmission problems?

RX350 often faces sluggish acceleration and intermittent starting problems related to electrical or transmission components. For sluggish driving or no forward movement, inspect the transmission fluid level and condition first. Low or dirty fluid can cause poor shifting.

Do you really need to change the transmission filter?

Yes, you likely need to change your transmission filter, as it is recommended during routine transmission fluid changes for most vehicles, typically every 30,000 to 60,000 miles, though intervals vary by manufacturer. However, some modern or sealed transmissions might not have a serviceable filter and may only need the fluid changed. It is essential to check your owner's manual for specific recommendations or consult a mechanic if you suspect a problem.
When to change the transmission filter

Follow your owner's manual: The most important guideline is to follow the maintenance schedule in your vehicle's owner's manual.
With every fluid change: It is best practice to change the filter whenever you change the transmission fluid, as they work together to keep the system clean.
Based on mileage: For vehicles with a serviceable filter, changing it every 30,000 to 60,000 miles is a good general rule.
For heavy-duty use: Reduce the service interval if you frequently tow or drive in stop-and-go traffic.

Signs your transmission filter may need changing

Overheating: A clogged filter can cause overheating, which may result in a burning smell from the transmission fluid.
Fluid leaks: A failing filter can contribute to fluid leaks, leading to poor performance.
Strange noises: Listen for unusual noises, such as grinding gears or noisy idling.
Delayed shifting: If your gears are sluggish to shift, a clogged filter may be the cause.

This video explains how to change transmission fluid and the importance of changing the filter: 58sAnderson's GarageYouTube · Aug 27, 2023
Important considerations

Serviceable vs. sealed filters: Some vehicles, especially older ones or those with certain designs, have a simple screen in the pan that can be cleaned instead of a replaceable filter. Modern sealed transmissions often require complete disassembly for a filter change, so they may not be a routine maintenance item unless there is an internal issue.
Filter replacement versus fluid exchange: Simply replacing the filter without changing the fluid is not recommended. A full transmission fluid change is crucial for the health of your transmission.
Check for damage: It's important to change the filter if there are signs of internal damage, such as metal shavings in the fluid. However, replacing the filter will not fix existing internal problems.

This video discusses the difference between transmission filter and screen: 59sMercie J Auto Care, llcYouTube · Dec 19, 2023

How much is a transmission fluid change for a Lexus RX 350?

The cost to change the transmission fluid on a Lexus RX 350 typically ranges from approximately $350 to $550. This price can vary based on factors such as the age of the vehicle, where you get the service done (dealer vs. independent shop), and the specific parts used.
You can watch this video to learn more about the concept of lifetime transmission fluid: 49sGX460 OFF-ROADYouTube · Oct 10, 2025
Cost breakdown and factors

Dealer service: Expect to pay in the higher end of the range, often between $396 and $525 or more. Dealers use official, manufacturer-recommended parts and have factory-trained technicians, which can lead to higher labor rates.
Independent shop: Costs are often lower, potentially between $352 and $465 or more. Independent shops may use aftermarket parts, which are typically less expensive than official OEM parts.
Vehicle model year: The specific year of your Lexus RX 350 can influence the price, with some years potentially having slightly different requirements or costs.
Parts and labor: The final cost depends on the price of the transmission fluid, any necessary gaskets or filters, and the labor rate of the shop performing the service.

What to consider

Maintenance schedule: Follow the maintenance schedule in your owner's manual. For many Lexus RX 350 models, a transmission fluid change is recommended every 30,000 to 60,000 miles, depending on driving conditions.
Fluid flush vs. change: A standard fluid change typically replaces less than half the fluid. For the best protection, especially in a vehicle with an older fluid, a professional transmission fluid flush may be recommended to remove the old, contaminated fluid.
"Lifetime" fluid: Some models use "lifetime" transmission fluid, meaning it is not designed to be changed under normal circumstances. However, a transmission can still fail, especially outside of the warranty period. If you are concerned or experiencing shifting issues, it is best to consult with a dealer or a trusted mechanic.

How often does Lexus recommend transmission fluid change?

The Lexus transmission fluid change interval varies by model and fluid type, but generally ranges from 30,000 to 60,000 miles or every 3 to 5 years for most automatic transmissions. Some models with WS fluid have a longer interval (60,000 miles or 6 years), while others with T-IV fluid need changes every 30,000 miles or 3 years. It's crucial to consult your owner's manual for the specific recommendation for your vehicle and consider changing the fluid sooner under harsh driving conditions like towing or stop-and-go traffic.
This video explains the difference between different types of Lexus transmission fluids and their recommended change intervals: 1mThe Car Care NutYouTube · Apr 8, 2023
General recommendations

Standard interval: A common recommendation for many Lexus models is between 30,000 and 60,000 miles, or every 3 to 5 years.
Specific fluid types: Some models with T-IV fluid require changes every 30,000 miles or 3 years, while models with WS fluid can go up to 60,000 miles or 6 years.
Harsh driving conditions: If you frequently tow heavy loads, drive in stop-and-go traffic, or endure extreme heat, you may need to change the fluid more often, as this can accelerate fluid degradation.

This video demonstrates the process of changing the transmission fluid and filter in a Lexus GS350: 1mDIY DanYouTube · Aug 4, 2018
How to determine the correct interval for your vehicle

Check your owner's manual: This is the most important step, as it will provide the most accurate information for your specific make, model, and year.
Inspect the fluid: If you don't have your manual, you can get a clue from the fluid's condition. New fluid is typically red, while old or burnt fluid turns brown or black. If you see signs of discoloration, it's time for a change.
Consult a Lexus technician: If you're unsure, a Lexus dealership or a trusted mechanic can provide expert advice based on your vehicle's specific needs.

This video explains how to check the transmission fluid level and what to do if the fluid is dirty: 27sProfessor's GarageYouTube · Apr 15, 2023

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.