2021 Lexus RX problems

Filed Sep 27, 2026 · Brakes, Electrical · AZ

Electronic Parking Brake (EPB), 12V Battery/Electrical System. My vehicle's 12V battery failed, with the dealership measuring voltage below 10V during the event. This caused multiple simultaneous module malfunctions (confirmed by the dealer as caused by the battery failure), including a complete inability to move the vehicle after jump-starting on three separate attempts — the engine ran, but the vehicle would not drive despite a functioning alternator. The vehicle's steering wheel also locked, preventing the car from being pushed to a safe location. Approximately 3 months after this event, a routine service visit revealed the rear brake pads had worn from 8mm (measured at time of purchase) to 2mm (failed), while the front pads wore from 10mm to 7.8mm (normal wear) over the same period and mileage. The rear pads wore roughly 3 times faster than the front, which is inconsistent with normal vehicle operation, since front brakes handle proportionally more braking load and are fitted with larger rotors for this reason on this and virtually all vehicles. The rear brake caliper is the only caliper equipped with the EPB motor/actuator; the front calipers are purely hydraulic. The selling dealer's pre-purchase report also noted noise from the rear brakes at time of purchase, which is consistent with the EPB's position calibration having been disrupted at some point prior to my ownership (e.g., from a prior battery event or service) and never properly relearned/recalibrated afterward — producing a low-level drag from the outset. My own battery failure event (voltage measured below 10V) would then have compounded this already-uncalibrated system, worsening the drag and producing the rapid 6mm of wear observed in the following months. This points to one underlying EPB calibration fault, aggravated by repeated voltage instability over time, rather than an unrelated mechanical issue — see attached documents for more information.

Filed Dec 19, 2025 · Airbags · CA

The contact owns a 2021 Lexus RX 350. The contact received notification of the federal safety agency Campaign Number: 23V865000 (Air Bags); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

Filed Dec 10, 2025 · Airbags · 76,000 miles · CA

The contact owns a 2021 Lexus RX 350. The contact stated that upon starting the vehicle, the air bag malfunction warning light was illuminated. The contact stated that the SRS alert message was displayed. The passenger’s side seat belt warning light was illuminated for two minutes. The contact received notification of the federal safety agency Campaign Number: 23V865000 (Air Bags). The local dealer was contacted and confirmed that the repair was not available until January 2026 for the West Coast. The dealer informed the contact about a possible diagnostic test. The vehicle was not diagnosed or repaired. The dealer declined to accept a Trade-In due to the recall. The manufacturer was contacted and confirmed that the repair was not available and offered the contact a rental vehicle. The failure mileage was approximately 76,000.

Filed Dec 9, 2025 · Airbags · CO

The contact owns a 2021 Lexus RX-450H. The contact received notification of the federal safety agency Campaign Number: 23V865000 (AIR BAGS); however, the part to do the recall repair was not yet available. The contact stated that whenever a handbag was placed on the front passenger’s seat, the air bag warning light illuminated. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was unknown.

Filed Dec 8, 2025 · Tires · SC

The tire (Bridgestone Ecopia 422 Plus 235/55R 20 102V M+S) failed within seconds while driving on the highway at 70 MPH. Luckily I did not lose control and was able to steer the car from the middle lane to the birm thanks to the semi driver on my right who allowed us to get off the road quickly. There was almost no rubber remaining on the rim and the tire pressure sensor was gone. The tow truck driver and NTB tire technician said the tire appeared to have failed due to delamination of the steel belt. Subsequent searches on the internet seem to support belt failure as the cause of the rapid loss of the tire. Walmart has refunded the cost of the failed tire. Bridestone is being less than helpful relative to the remaining three tires, which have less than 2,000 miles on them.

Filed Dec 4, 2025 · Airbags · UT

When can I expect to get my recalled Lexus fixed,? All i can find is that they have no remedy, so the dealer cant replace the faulty occupant air bag sensor, the federal safety agency CAMPAIGN ID: 23V865000 Report Date: DEC 19, 2023 Vehicles Affected: 999901

Filed Nov 17, 2025 · Airbags · CA

The contact owns a 2021 Lexus RX450H. The contact received notification of the federal safety agency Campaign Number: 23V865000 (Air Bags); however, parts for the recall repair were not available. The contact stated that the parts had not been available since receiving the recall notification two years ago. The dealer was contacted; however, the contact was informed that parts were not available. The manufacturer was contacted; however, the contact was informed that the parts were not yet available. The contact had not experienced a failure.

Filed Oct 14, 2025 · Airbags · CA

The contact owns a 2021 Lexus RX 350. The contact received notification of the federal safety agency Campaign Number: 23V865000 (Air Bags); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure.

Filed Sep 30, 2025 · Airbags · TX

The contact owns a 2021 Lexus RX350. The contact recently purchased the vehicle. The contact later obtained a Carfax report and identified an unrepaired recall associated with the VIN. The unrepaired recall was the federal safety agency Campaign Number: 23V865000 (Air Bags); however, parts were not yet available. The vehicle was taken to the dealer; however, the contact was informed that there was no unrepaired recall related to the VIN. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

Filed Sep 3, 2025 · Body, Brakes · CA · crash

I was at the gas station, in line waiting for one of the three gas pumps to be available. I put my car in reverse to back up and pull around another car in order to go to the open pump in front. When my car was in reverse motion, I stepped on the brake pedal, but the car did not stop. I stepped on the brake pedal numerous times, but the brake did not function. My car backed into the front of the car in line behind me damaging both vehicles. The automatic emergency braking system did not activate, and there was no rear collision warning sound or message. I switched my car from Reverse into Park to stop its movement, but it was too late to avoid the collision. I had a passenger in my car who corroborates this description. Fortunately there were no pedestrians behind my car, so the only damage was to the vehicles. My vehicle has not been inspected by anyone since the accident, but will be soon. I have owned this car since April 2021 and previously had a few similar situations when moving in the forward direction. Previously, the brake problem occurred while moving forward at very low speed pulling into parking places. The brake failed to activate, and I had to throw the car into Park to stop it, but this was the first time I had experienced this problem traveling in reverse. When this situation occurs, I am pressing on the brake pedal, but the car is not stopping and the brake pedal seems to go to the floor. On March 5, 2025 I took the car to a Lexus dealer and reported the brake failure problems. They inspected, road tested, and checked for codes, but could not identify the problem. I believe that the collision back up system should have prevented this accident, but it did not function. I suspect that there may be some kind of computer issue that prevents the brake from actuating. The car will be going in for repair soon, and I have requested that a complete diagnostic review be performed of this brake problem.