What is the major problem of Lexus RX 350?

The major problem most frequently reported for the Lexus RX 350 is transmission-related failures or rough shifting, particularly in older models.

The RX 350 is widely regarded for reliability, but owners have reported recurring issues that vary by generation. Across the line, the most persistent concerns center on the drivetrain, especially the automatic transmission, with additional reports of oil consumption and certain electrical or infotainment glitches affecting some model years.

Generational snapshot: where problems tend to appear

First-generation RX 350 (2007–2010)

Common problems cited by owners of early RX 350 models include the following:

• Transmission issues, including harsh or delayed shifts and, in some cases, transmission failure or torque converter problems.


• Excessive oil consumption reported for some engines, leading to frequent top-ups or monitoring during service intervals.


• Electrical and infotainment glitches, such as intermittent instrument cluster or radio/display faults, and warning lights coming on spuriously.

In addition to the above, some owners note cooling system wear and related leaks or aging components as cars accumulate mileage. Prospective buyers should verify a solid transmission service history and monitor oil consumption if considering a high-mileage example.

Second-generation RX 350 (2010–2015/2016)

For the second generation, the most commonly reported issues shift slightly but remain drivetrain- and electronics-related. The typical concerns are:

• Transmission and drivetrain reliability, including occasional shuddering or rough shifting, and, less commonly, torque converter concerns.


• Infotainment and electronics glitches, with complaints about navigation system freezes, Bluetooth connections, and touchscreen responsiveness.


• Steering and suspension wear, including reports of power steering assist variations and aging bushings or linkages contributing to vague handling feel at high mileage.

As with older RX 350s, a thorough service history and pre-purchase inspection that includes transmission assessment and air/fuel system checks is advisable for this generation.

Recent-generation RX 350 (2016–present)

Newer RX 350 models improved many mechanical aspects, but owners still report some common problems typical of modern, electronics-rich vehicles. The frequent concerns include:

• Infotainment and driver-assistance electronics glitches, including occasional system freezes and software updates, as well as occasional delays in Apple CarPlay/Android Auto functionality.


• Electrical issues impacting non-critical systems, such as intermittent sensor warnings or minor dashboard warning light activity without clear mechanical cause.


• Overall reliability improvements, but some owners report transient transmission behavior or software-related transmission adaptation that can feel like rough shifting in certain drive modes.

For newer models, staying current with software updates and ensuring recalls are addressed can help minimize these issues. A careful test drive that includes a transmission check and an evaluation of the infotainment system is recommended.

What to check before buying

Before purchasing any RX 350, owners and buyers should verify a full maintenance history and consider a professional pre-purchase inspection. The following areas deserve particular attention across generations:

• Transmission: service history, fluid condition, and evidence of proper maintenance; be wary of hesitations, slipping, or shuddering during shifts.


• Oil consumption: check oil level history and look for signs of excessive oil burn or consumption in the service records or maintenance reports.


• Electrical and infotainment: confirm functioning of the touchscreen, Bluetooth, navigation, and driver-assistance features; check for any recall notices that have been completed.

Apart from these checks, ensure any open recalls are resolved and consider a vehicle history report to confirm no severe accidents or flood damage. This approach helps identify the major reliability risk for a given RX 350 model year.

Summary

The Lexus RX 350 remains a popular choice for its comfort, interior quality, and reputation for reliability. The most significant and recurring reliability issue across generations tends to be the automatic transmission and drivetrain, with secondary concerns including oil consumption and certain electronics/infotainment glitches. Buyers should focus on transmission health, verify oil-use history, and ensure electronics are up to date, along with completing any recall work.

Summary: The major problem for the Lexus RX 350 is not a single defect, but a pattern of drivetrain/transmission and electronic issues that varies by generation. A thorough inspection and maintenance history can help buyers avoid the most common pitfalls.

What is the most common problem with Lexus RX350?

Top Lexus RX350 Problems

• Massive Oil Leak and Loss of Oil Pressure.
• Air Conditioning Fault Due to Failed AC Amplifier.
• Sofrware Upgrade For GPS, Radio, and Heater Operation.
• Airbag Warning Light With Code B0111 and/or B0116.
• Check Engine Light With Codes Indicating Fault With the Variable Valve Timing System.

Which year RX350 to avoid?

Years to avoid for the Lexus RX 350 include 2007, 2008, 2010, 2016, and 2017 due to common problems like oil leaks, engine issues, brake failures, and faulty sensors. The 2010-2012 models are particularly prone to a ruptured oil cooler line that can cause engine failure, while the 2007-2009 models had issues with cracking dashboards and a faulty brake master cylinder. The 2016 and 2017 models saw recalls related to airbags and issues with rain sensors, notes CoPilot.
 
You can watch this video to learn about the history of the Lexus RX 350 and common problems in different generations: 1mThe Miles DrivenYouTube · Dec 22, 2024
Years to avoid and why

• 2007–2009: These models are known for cracking dashboards and a faulty brake master cylinder that can lead to brake failure. 
• 2010–2012: A common and severe problem with these years is the oil cooler line, which can rupture and lead to engine failure. 
• 2016–2017: The 2016 model year had airbag recalls and was the first year of a new generation, which can lead to early bugs. The 2017 model had issues with the rain sensor and wipers, in addition to having its own airbag recalls. 

What to look for instead

• 2011–2015: These models generally have fewer issues, with the 2013–2015 models in particular being noted as more reliable. 
• 2018–2022: Models from these years are considered more reliable, especially those with the redesigned exterior. 
• 2020–2022: These are considered among the most reliable years, with the 2020 model year being a good choice. 

This video discusses the best Lexus RX 350 years to buy: 59sThe Miles DrivenYouTube · Dec 18, 2024

What is the average lifespan of a Lexus RX350?

A Lexus RX 350's life expectancy is typically between 250,000 and 300,000 miles with proper maintenance and care, though many owners report exceeding this significantly. This translates to about 16 to 20 years of service, based on averaging 15,000 miles per year. Key factors for achieving this longevity include routine oil changes, fluid exchanges, and other scheduled maintenance, say Reddit users and CarBuzz. 
Factors that contribute to a long life

• Regular maintenance: Following the recommended service schedule is crucial. This includes regular oil changes, as well as exchanging transmission fluid and coolant, according to Facebook users and Reddit users. 
• Smart driving: Driving sensibly helps reduce wear and tear on the vehicle's components. 
• Proactive repairs: Addressing minor issues as they arise can prevent them from becoming major, costly problems down the road. 
• High-quality parts: Using high-quality parts during repairs will contribute to the vehicle's long-term health. 

Potential wear points

• While the RX 350 is very reliable, some common points to watch for include valve cover gaskets leaking oil and rear wheel bearings wearing out, note Facebook users and Reddit users. 
• Owners also recommend checking the transmission fluid level and shifting behavior, especially in high-mileage vehicles, suggests Facebook. 

What to expect from a high-mileage RX 350

• It's common to see RX 350s with 250,000 to over 300,000 miles still running strong. 
• Some owners report that while the car may still drive fine, the transmission might become sluggish around the 190,000-mile mark, but could still last for tens of thousands of miles more without repair. 
• The decision to keep driving or retire the vehicle often comes when a major repair, like an engine drop, is needed. 

Is the Lexus RX350 a reliable car?

Yes, the Lexus RX 350 is considered a very reliable car, known for its dependability, with a strong reputation for longevity and few major mechanical issues across many model years. However, specific model years have a history of more reported problems, and some owners have noted issues with road noise, the infotainment system, and the automatic rear door. 
Key reliability points

• Overall dependability: The RX 350 is widely recognized for its reliability and has a reputation for being a sturdy and dependable vehicle. 
• Strong reputation: Lexus's brand standards contribute to the RX 350's exceptional reliability. 
• Longevity: Many sources suggest the RX 350 can last for 250,000–300,000 miles or more, notes PA Auto Sales. 

Potential issues to be aware of

• Specific model years: Some model years have more reported issues. It's wise to be cautious with the 2007, 2008, 2010, 2016, and 2017 models, which have been flagged for potential problems like oil leaks and transmission issues, says Auto Web Expo. 
• Other common complaints: Some owners have mentioned issues with wind and road noise, and the automatic rear door, reports Cars.com. 
• Technology: The infotainment system, particularly the touchpad on the center console, has been cited as sensitive and sometimes difficult to use. 

Reliable models to consider

• If buying a used model, a model year from 2011–2015 or 2018, 2019, or 2021 is a good choice based on many reviews, according to CoPilot for Car Shopping.