2023 Lexus RX 350 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications, torque values, and reference data
- Electrical diagnostics with full wiring diagrams
- Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
- Diagnostic trouble codes and troubleshooting flow
- Maintenance schedules and fluid capacities
Trims covered
- Base
- F Sport Handling
- Luxury
- Premium+
- Premium
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Maintenance & Lubrication
- Specifications
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Diagnostic Trouble Codes
- Technical Service Bulletins
- Wiring Diagrams
The contact loaned a 2023 Lexus RX 350. The contact stated that while driving with the cruise control feature set at 65 MPH, the vehicle was rear-ended, hit the median wall, and was then catapulted back into oncoming traffic. The contact stated that the driver's side air bag did not deploy however all the other air bags did deploy as intended. In addition, the contact stated that the front driver-side seat belt failed to secure the driver during the incident. The contact sustained shoulder, hip, leg, and arm injuries and the front passenger sustained left arm injuries. Medical attention was r
The contact owned a 2023 Lexus RX 350. The contact stated that while the vehicle was stopped at a traffic light, it suddenly accelerated without warning. While driving in a parking lot, the vehicle again surged forward approximately 20 feet. The contact was able to swerve to avoid striking a pedestrian. The vehicle became uncontrollable, and the brakes were inoperable. The vehicle ultimately crashed into a dumpster fence, which fell onto the vehicle. The contact sustained injuries to her mouth, including cuts to the inside and outside of her mouth, and medical attention was provided by a plast
My air bags did not deploy with a head on collision.
The sunroof of my 2023 Lexus SUV had a defect and shattered/exploded outwards due to a defect in the tempered glass while driving on the highway. The glass shards fell from the sunroof and cut my face while driving. I had to have a nurse remove the glass shards from my face. Fortunately in this scenario, it did not cause me to lose control of my vehicle on a congested highway. The sunroof defects with Toyota and Lexus vehicles have been documented by several customers online and through several class action lawsuits. The vehicle has been sent to a local Toyota/Lexus dealership for inspection
We have encountered 2 instances of Unintended Acceleration. Lexus has inspected the vehicle and states they could not find anything wrong. In both instances the car jumped forward without notice. No warnings were given. The first time it occurred there was over $8,500 worth of damage. No damage the second time which occurred on May 20, 2024.
The contact owns a 2023 Lexus RX 350H. The contact stated that while driving at an unknown speed, when a vehicle on the shoulder, to the right suddenly began to cross in front of their vehicle to get to the median. This caused the contact's vehicle to T-bone the corner of their vehicle. The front passenger side fender had been damaged causing the door to no longer open. No air bags deployed. There were no injuries and no medical attention was needed. A police report was filed. The vehicle was able to be driven from the crash. The vehicle had not been taken for diagnosis or repair. The manufact
My 2023 Lexus RX350 with 67,000 miles displayed a check engine light along with a Drive-Start Control Malfunction warning. The vehicle was brought to a Lexus dealership where it was diagnosed with fault code P25B372 — Turbocharger Wastegate A Actuator Stuck Open. The dealership confirmed the wastegate actuator has failed and requires replacement. The part is currently on backorder with over 800 units backordered nationally, indicating this is a systemic issue affecting multiple vehicles. Toyota has issued Technical Service Bulletin T-SB-0084-23 covering this exact fault code on the same 2.4L
Vehicle jerking back and forth aggressively while at a complete stop with foot firmly on brake pedal. Vehicle seems to want to lurch forward.
Showing the 8 most serious of 56 complaints filed with NHTSA.
