2024 Lexus RX Electrical Problems

The contact owns a 2024 Lexus RX 350H. The contact stated that while attempting to start the vehicle, several unknown warning lights illuminated. Additionally, the door latches locked independently, and the contact and wife were locked inside the vehicle for several hours. The contact eventually remembered to pull the mechanical door latch and exited the vehicle. The vehicle was towed to the dealer where it was diagnosed with battery failure. The contact was informed that the battery needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 17,500.

NHTSA ID

11730467

Incident

Feb 19, 2025

Mileage

17,500 mi

The contact owned a 2024 Lexus RX 350H. The contact stated that while the vehicle was parked and running, it unexpectedly turned off with the electronic malfunction error message displayed. The vehicle could not able to be restarted, and the contact was unable exit the vehicle due to the failure of the power locks. Roadside Assistance assisted with removing the contact from the vehicle. The vehicle was taken to the dealer, where it was diagnosed with battery failure. The contact was informed that the battery needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer and remained with the dealer. The dealer was not contacted. The vehicle was not diagnosed or repaired. The dealer attempted to return the vehicle back to the residence. The contact was concerned about the issues with the vehicle. The manufacturer was made aware of the failure. The failure mileage was approximately 1,624.

NHTSA ID

11723513

Incident

Mar 11, 2026

Mileage

1,624 mi

I am reporting a recurring electrical and mechanical system failure on a 2024 Lexus RX 350h Luxury. On [XXX], the vehicle suffered a total power loss that rendered the electronic door latches unresponsive to all inputs. Because the occupants were a [XXX] and a [XXX] strapped into car seats, they were physically unable to reach the interior manual overrides. Critically, the mechanical backup key also failed to unlock the vehicle from the exterior, preventing immediate rescue. This created a life-threatening entrapment scenario. The doors only responded after multiple minutes of repeated manual attempts. Once entry was gained, the vehicle would not start and the headlights began blinking rapidly, indicating a total system communication failure. I had to use jumper cables to restore power. This is the second occurrence of this catastrophic failure, documented on Repair Order [XXX] at Lexus of Westminster. The failure of both electronic and mechanical failsafes constitutes an extreme occupant safety hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11722677

Incident

Mar 5, 2026

My 2024 Lexus RX 350h experienced a catastrophic 12V battery collapse (2.00V), disabling the electronic 'e-Latch' door system and rendering interior handles non-functional for standard use. While a manual override exists, it is not intuitive for emergency egress. Additionally, the electronic parking brake and shift-by-wire systems remained physically locked, preventing the vehicle from being moved to a safe location during the power failure. I am reporting this as a failure of primary safety and fail-safe protocols. Dealer did not consider this a a problem because he said I “needed to read the manual before I ever drove the car”

NHTSA ID

11715077

Incident

Jan 28, 2026

The car started showing multiple error messages on the dash and then shut off while in operation, it would not restart without a service call and battery boost. This has happened multiple times. Online research shows this is a common issue with the hybrid models - the 12v battery doesn't get adequately charged, voltage drops and car ceases to work - even while mid drive on the road, this is extremely scary and dangerous.

NHTSA ID

11708193

Incident

Sep 14, 2024

Battery has "sulfated" twice in 15 months of ownership. Lexus/dealer have replaced battery two times. Considered safety issue since battery could "die" at any time. Could be locked out of car with infant inside or if battery dies while driving, car could become immobile.

NHTSA ID

11708068

Incident

Jan 8, 2025

The contact owns a 2024 Lexus RX. The contact stated that while idle at a red stoplight, the entire vehicle began to violently jerk back and forth. No warning lights illuminated. The vehicle was taken to a local dealer, where it was diagnosed with a software malfunction, and the failure was replicated. The vehicle was repaired. Medical attention was sought for severe depression, anxiety, PTSD, memory loss, concussion, head, neck, and back injuries. No police report was filed. In addition, the contact stated that after the injuries, she was no longer able to work or drive. The manufacturer was made aware of the failure. The failure mileage was approximately 22,790.

NHTSA ID

11703643

Incident

Oct 13, 2025

Mileage

22,790 mi

The contact owns a 2024 Lexus RX350H. The contact stated while attempting to start the vehicle, the vehicle failed to start as intended. The contact stated that the doors failed to unlatch, and the key fob failed to function as intended. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. Additionally, the failure had occurred while the contact and her husband were occupying the vehicle. The contact stated that luckily the weather was not cold, or a baby was not in the vehicle during the failure. AAA was contacted and provided a jumpstart to the vehicle. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 16,342.

NHTSA ID

11698148

Incident

Nov 4, 2025

Mileage

16,342 mi

Was pulling into parking spot when car went haywire and started accelerating on its own. It would not stop until it has hit 5 cars and crashed into a cement wall. The brakes did NOT stop the acceleration. This occurred at the exact same time there was an incoming call which was not answered. The airbags did NOT deploy. The car appears to be totaled and has been towed to a State Farm affiliated auto yard. There were no indicator lights that something was wrong BUT the Lexus app showed 5 warnings that came in to my text messages same day. These 5 alerts are indicative of exactly what occurred.

NHTSA ID

11686483

Incident

Sep 10, 2025

Brand new vehicle- 12volt battery failed after 5 weeks. Lexus initially stated battery fine. Then battery failed while in their possession- Lexus replaced battery. Few weeks later battery failed again. Lexus tested & replaced battery for second time - but battery kept draining & they were unable to repair after having vehicle at dealership for 3.5 months

NHTSA ID

11671336

Incident

Dec 18, 2024

This car is a hybrid. it is 15mos. old w/13500 miles. I've had two 12v battery failures which resulted in 1 time being locked out of car, and 1 time locked in.

NHTSA ID

11667000

Incident

Jun 14, 2025

The contact owns a 2024 Lexus RX 350. The contact stated that while driving in a School Zone, a message warning the contact about entering a school zone would be displayed. The contact stated that this was a distraction while driving instead of a safety feature. The vehicle was not diagnosed or repaired. The manufacturer was notified of the issue but offered no assistance. The failure mileage was approximately 3,000.

NHTSA ID

11663115

Incident

May 27, 2024

Mileage

3,000 mi

The vehicle would not start. It is a known problem with this PHEV that if car is not used for a couple of days the 12v battery becomes depleted and the car cannot be started and all systems of the car are dead.

NHTSA ID

11648649

Incident

Mar 16, 2025

The vehicle was locked, parked in garage. 12V battery failed. Vehicle became a brick. Vehicle had to be towed to dealership. Battery changed under warranty.

NHTSA ID

11648610

Incident

Mar 8, 2025

Low voltage warning, vehicle purchased new 3 months ago. Vehicle failed to start

NHTSA ID

11642439

Incident

Feb 13, 2025

When I start to coast to come to a stop the engine will rev, even though the Energy Flow screen shows the gas engine is disengaged and running only on EV. The engine will rev, even with me using the brake. But the EV light is off and the rpms are rising. Eventually the EV light will come on and the gas engine will cut off and the vehicle will switch to EV mode. My mpg has dropped to 36.2, so something is not right. When I was at the dealer for my 10K service, they told me this was the car "shedding" the extra energy, but the battery was not fully charged, so I'm perplexed and frustrated.

NHTSA ID

11639180

Incident

Jan 24, 2025

Mileage 3445, vehicle age 3.5 months. Car located in home garage with doors unlocked. Car Locked itself making entry impossible. All systems refused to open with “clicker” or mechanical key. Possibly battery issue. Four (4) different tow truck drivers over 4 days could not gain entry. Safety hazard as a child or disabled person could have been locked inside. Tow driver could not “pop” the door lock. Despite pulling up on the inside handle, the door would not open. Towed to dealer. Thus far dealer has no solution. Dealer said they are contacting Lexus. No warning lights, etc. Vehicle is a plug-in hybrid. Drive Battery was at 100%.

NHTSA ID

11617988

Incident

Sep 29, 2024

The contact owns a 2024 Lexus RX450. The contact stated that upon attempting to enter the vehicle, the vehicle failed to unlock with the key fob, prompting the contact to attempt to manually unlock the vehicle; however, the vehicle failed to unlock. The contact called Roadside Assistance and was determined that the battery was drained and was able to jumpstart the vehicle after using a Slim Jim to open the door. There was no warning light illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The contact was informed that leaving the key near the vehicle would result in inadvertent battery discharge. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 1,500. The VIN was not available.

NHTSA ID

11591818

Incident

May 19, 2024

Mileage

1,500 mi