2024 LEXUS RX Electrical System Problems

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.

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.

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.

Mileage: 22,790

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.

Mileage: 16,342

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.

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

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.

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.

Mileage: 3,000

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.

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.

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

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.

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%.

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.

Mileage: 1,500