Common problems

Lexus RX common problems and reliability issues

Honest rundown of the most common Lexus RX faults, what to watch for, and how to keep one running well.

Updated 23rd June 2026 DVSA data: Across 18,306 recorded MOT tests, 6.7% failed.

Lexus RX
Image via Wikipedia, CC-licensed.

The Lexus RX is generally known for its reliability and comfort, but like any vehicle, it can experience issues. Common problems include electrical faults, suspension wear, and engine concerns. Understanding these potential issues can help owners maintain their vehicles and avoid costly repairs.

Electrical Issues

One of the most frequently reported problems with the Lexus RX involves its electrical system. Owners have noted issues with the battery, alternator, and various electronic components. Symptoms often include warning lights on the dashboard, malfunctioning infotainment systems, and problems with power windows or locks.

These electrical faults can stem from a variety of sources, including faulty wiring or poor connections. Regularly inspecting the battery and ensuring all connections are clean can help mitigate some of these issues. Additionally, keeping software updated for the infotainment system can prevent glitches and improve overall functionality.

Suspension Problems

The suspension system in the Lexus RX is designed for comfort, but it can develop problems over time. Common complaints include excessive noise from the suspension, uneven tyre wear, and a bouncy ride. These issues are often linked to worn-out shock absorbers or struts, which may need replacement as the vehicle ages.

Owners should be vigilant about any changes in ride quality and have the suspension inspected regularly. Addressing suspension issues early can prevent further damage to the vehicle and ensure a smoother driving experience. Regular alignment checks can also help prolong the life of suspension components and tyres.

Engine Concerns

While the Lexus RX is equipped with reliable engines, some owners have reported issues related to oil consumption and overheating. Excessive oil consumption can lead to engine damage if not addressed promptly. Symptoms may include low oil levels between changes and blue smoke from the exhaust.

Overheating can be caused by a variety of factors, including a failing water pump or a blocked radiator. Regular maintenance, such as checking coolant levels and replacing the oil filter, can help prevent these issues. Keeping an eye on engine temperature and addressing any warning lights immediately can save owners from more serious problems down the line.

Transmission Issues

Transmission problems, while not as common, can occur in the Lexus RX, particularly in older models. Symptoms may include slipping gears, delayed shifting, or unusual noises when changing gears. These issues can often be traced back to low transmission fluid levels or a failing transmission control module.

Regularly checking and changing the transmission fluid is essential for maintaining the health of the transmission. If issues arise, it is advisable to have the vehicle inspected by a qualified technician. Early intervention can often prevent more extensive and costly repairs.

Brake System Failures

The brake system in the Lexus RX is generally reliable, but some owners have reported issues with the brake pads wearing out prematurely or the brake warning light illuminating without apparent cause. This can lead to reduced braking performance and increased stopping distances, which is a serious safety concern.

To ensure optimal braking performance, regular inspections of the brake pads and discs are crucial. If any unusual noises or vibrations are noticed when braking, it is essential to have the brakes checked immediately. Keeping the brake fluid at the correct level and replacing it as recommended can also help maintain the system’s integrity.

Interior and Comfort Features

While the Lexus RX is praised for its luxurious interior, some owners have reported issues with the comfort features, such as seat adjustments and climate control systems. Problems may include malfunctioning seat heaters, faulty air conditioning, or issues with the infotainment system.

Regular maintenance of these features can help prevent problems. Ensuring that all controls are functioning correctly and addressing any issues as they arise can enhance the overall driving experience. Keeping the interior clean and free from debris can also help prolong the life of electronic components and controls.

Lexus RX recall record

6 recalls have been issued for the Lexus RX, between 2011 and 2025.

  1. Parking Assist ECU reprogram on multiple models

    R/2025/467

    Issued 1 December 2025

    For certain vehicles equipped with a Parking Assist ECU a component of the Panoramic View Monitor (PVM) system that displays the rear view image the software may cause the rear view image to freeze or not display

    Remedy:Reprogram the parking assist ECU.

    Affects cars built Apr 2022 to Sept 2025

  2. Combination Meter Reprogramming on Multiple Models (Lexus)

    R/2025/275

    Issued 24 November 2025

    For certain vehicles equipped with the combination meter system (where various information is displayed) that due to an improper programming of the combination meter unnecessarily repetitive data is written to a memory device. This may cause the memory device to deteriorate and the monitor to not display during the meter at start up and remain in this state permanently.

    Remedy:Reprogram or replace the combination meter.

    Affects cars built Jun 2024 to Jun 2024

  3. Due to the software programming for the DCM memory capacity there is a possibility that the DCM may not complete the shutdown process within a specific period of time when the ignition is turned off causing the DCM to not restart at the next ignition cycle and making the e-Call function unavailable.

    R/2023/280

    Issued 12 October 2023

    On affected vehicles there is a possibility that the DCM may not complete the shutdown process within a specific period of time when the ignition is turned off causing the DCM to not restart at the next ignition cycle and making the e-Call function unavailable. As a result the vehicles do not comply with relevant regulations.

    Remedy:The software of the DCM (Data Communication Module) will be updated via an Over the Air (OTA) wireless update.

    Affects cars built Feb 2023 to Jun 2023

  4. VEHICLE COULD SUDDENLY STOP

    R/2013/104

    Issued 16 October 2013

    It is possible that due to variations in the build specification of the Intelligent Power Module (IPM) which includes the Insluted-Gate Bipolar Transistors (IGBT's) the lead-based solder could be affected by abnormally higher operating temperatures. This could result in a degrading of the solder and eventually heat damage to the IGBT's. If this occurs then warning lights on the instrument panel will illuminate. However if the driver fails to heed these warnings or the main power supply fuse blows then the vehicle could stop without warning.

    Remedy:Recall all the affected vehicles and replace the IPM unit with a upgraded unit.

    Affects cars built Apr 2006 to Dec 2008

2 older recalls not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Lexus RX MOT record

From 18,306 recorded MOT tests, 6.7% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20222,2933.4%23,467 mi
20211,6363.5%30,176 mi
20201,5823.8%37,172 mi
20192,1014.2%43,927 mi
20181,6565.4%52,326 mi
20171,7676.2%60,382 mi
20162,0426.7%67,771 mi
20151,23310.4%75,031 mi

Most common reasons for failure

  1. Tyre tread depth not in accordance with the requirements31.6%
  2. A suspension pin, bush or joint excessively worn22.2%
  3. A tyre seriously damaged20.3%
  4. a brake lining or pad worn below 1.5mm15.2%
  5. Brake disc or drum excessively weakened, insecure or fractured10.7%

Figures cover every Lexus RX tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Lexus RX official figures

Median across 48 variants on sale, electricity / petrol, petrol electric.

Combined economy
44.1 mpg
WLTP median across variants
CO2 emissions
145 g/km
Sets the first-year tax rate
Electric range
42 miles
Manufacturer WLTP figure

Official figures for new cars. Real economy varies with driving, load and conditions.

Frequently asked questions

What are the most common problems with the Lexus RX?

Common issues with the Lexus RX include electrical faults, suspension wear, and problems with the infotainment system. Regular maintenance can help mitigate these issues.

How reliable is the Lexus RX compared to other SUVs?

The Lexus RX is generally considered reliable, often ranking well in customer satisfaction surveys. However, like any vehicle, it can experience issues over time.

Are there any known issues with the Lexus RX's hybrid model?

The hybrid model may face battery-related problems and issues with the hybrid system. Regular checks and servicing can help maintain its performance.

What should I look for when buying a used Lexus RX?

When buying a used Lexus RX, check for service history, any signs of wear on the suspension, and the condition of the infotainment system. A thorough vehicle check is advisable.

How can I prevent common problems with my Lexus RX?

Regular servicing and timely repairs can help prevent common problems. Keeping an eye on warning lights and addressing issues promptly is also important.

Is the Lexus RX expensive to maintain?

Maintenance costs for the Lexus RX can be higher than average due to its luxury status, but regular servicing can help manage these costs. It's wise to budget for potential repairs.

What are the signs of suspension problems in a Lexus RX?

Signs of suspension problems include a rough ride, unusual noises when driving over bumps, and uneven tyre wear. If you notice these symptoms, it's best to have it checked by a professional.

How does the Lexus RX's infotainment system perform?

The infotainment system in the Lexus RX can sometimes be slow or unresponsive. Software updates and proper maintenance can improve its performance.

Sources