How many air filters does a Lexus RX350 have?

Two air filters: one engine air filter and one cabin air filter.

The RX350 standard configuration uses two main filters to protect both the engine and the interior environment. While two is typical for most model years, variations can occur by year, trim, and market, so it’s wise to confirm with the owner’s manual or a dealer for your specific vehicle.

What filters does the RX350 have?

The two primary air filtration components in the RX350 are the engine air filter and the cabin air filter. The engine air filter cleans air entering the engine for combustion, while the cabin air filter cleans air entering the vehicle’s HVAC system to improve interior air quality.

Key filters and their roles in the RX350

• Engine air filter — located in the air intake box in the engine bay; its job is to prevent dirt and debris from entering the engine, helping maintain performance and efficiency.


• Cabin air filter (dust and pollen filter) — located behind the glovebox or under the dash in many models; it purifies air entering the cabin via the HVAC system, improving comfort and air quality for occupants.

Careful attention to these two filters is part of routine maintenance. Replacements and inspections can vary by model year and driving conditions, so always reference the owner’s manual or a Lexus service professional for specifics.

Maintenance intervals and practical tips

Replacement intervals depend on climate, driving conditions, and regional recommendations. In general, consider the following guidance, and adjust based on your manual and environment:

• Engine air filter — commonly checked around every 30,000 miles and replaced as needed or per the manual; dusty or harsh conditions may require earlier replacement.


• Cabin air filter — typically inspected more frequently and replaced roughly every 15,000–30,000 miles or about once a year, depending on environment and the vehicle’s usage.

Always verify exact intervals for your year and market, and have a technician inspect for signs of clogging, unusual airflow, or reduced HVAC performance.

Bottom line and practical takeaway

For the Lexus RX350, count on two primary air filters: one for the engine and one for the cabin. If you’re planning maintenance, start with checks at the intervals noted in your owner’s manual and adjust for driving conditions. Staying on top of filter maintenance helps preserve engine efficiency and interior air quality.

Summary: The Lexus RX350 typically has two air filters—an engine air filter and a cabin air filter. Locations are in the engine bay and behind the glovebox, respectively. Replacement intervals vary by year, market, and conditions, so consult the owner’s manual and a qualified technician for precise guidance.

Where is the air filter on a Lexus RX 350?

Slide the tabs back into their catch re-engage the fasteners. Close the hood.

What is the most common problem with Lexus RX 350?

The most common problem with the Lexus RX 350 is a massive oil leak, specifically from the VVT-i oil line, which can lead to rapid oil loss and potential engine failure, especially in older models like the 2010. Other frequent issues include faulty rain sensors, especially in newer models, resulting in wipers that malfunction randomly. Older model years (2007 and 2010) also show a tendency for airbag warning lights and transmission problems, while some 2016 models experienced rough shifting and transmission issues.
 
This video discusses the 2013 Lexus RX 350's common problems, including oil leaks and other issues: 55scar PROblemsYouTube · Jun 26, 2022
Engine and oil leaks 

• VVT-i oil line leak: This is a recurring issue, particularly in older models like the 2010, where the oil line can burst, causing significant oil loss and potential engine damage if not addressed immediately. 
• Check Engine light: This can be triggered by various engine issues, including problems with the variable valve timing system. 

Electrical and sensor problems 

• Rain sensor malfunction: Both older and newer models have reported issues with the rain-sensing wipers not functioning correctly or stopping randomly. 
• Airbag warning light: This has been reported across several model years, often linked to codes B0111 and B0116 due to issues like faulty sensors or a depleted airbag backup battery. 
• Infotainment system issues: Problems like malfunctioning touchscreens, unresponsive climate controls, and other glitches have been reported, particularly in recent years. 

Transmission and drivetrain issues

• Rough shifting: Some models, such as the 2016, have been reported to have delayed gear shifts and a lack of smoothness.
• Transmission failure: In the 2016 model year, transmission problems were significant enough to cause concerns about long-term reliability. 

Other potential problems

• Spontaneously shattering sunroofs: Though rare, this has been reported in some model years and is a significant safety concern. 
• Body integrity issues: Some older models, such as the 2010, have experienced body-related issues like rattling doors. 
• Steering mechanism leaks: These can be costly to repair. 

How much does it cost to replace the air filter in a Lexus RX350?

The average cost for a Lexus RX350 Air Filter Replacement is between $72 and $92. Labor costs are estimated between $43 and $63 while parts are typically priced around $29. This range does not include taxes and fees, and does not factor in your unique location.

How often should I change the cabin air filter on my Lexus RX 350?

every 15,000 to 25,000 miles
Generally, cabin air filters should be replaced every 15,000 to 25,000 miles with some automotive experts advising as often as every 12,000 miles and some every 30,000 or once a year on average.