Electrical complaints by model year
Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
What owners report
I recently incurred a a $2900 repair bill for rodent damage to my knock sensor wire harness on my 2017 Lexus RX 450h. (mileage 13,000). It was not covered under warranty. The wiring involved has a soy based coating. This coating makes it a food source for 'critters '. The replacement wiring has the same coating making the chances of this happening again extremely high. The car is garaged with periods of outdoor time. When I asked the service manager how to prevent this from happening again I was told to spread mothballs on the driveway and garage floor and to stuff bounce dryer sheets in the engine compartment. Seriously!!!! Needless to say I am concerned about this happening again. How many other Lexus/Toyota owners have experienced this problem? I would hope there would be a better solution than mothballs and dryer sheets. …
Tl* the contact owns a 2017 Lexus rx450h. The contact stated while driving at various speeds, the main display screen went blank and would not function properly. The contact also stated that once this failure occurred, the safety features in the vehicle would disengage as well. The contact stated no warning light was illuminated. The vehicle was taken to valley Lexus (4701 mchenry ave, modesto, ca 95356) where it was diagnosed with the screen needing to be repaired or replaced. The vehicle was repaired however, the failure recurred. The contact related the failure to an unknown recall. The manufacturer was informed of the failure and referred the contact to a local dealer for assistance. The failure mileage was approximately 40,000.
About 15 miles into my drive to work in my 2015 Lexus RX 450h with only 6,300 miles, my dash panel indicated the following errors: check ABS, check BSM system, check headlight leveling system, brake malfunction, check Hybrid system, check power steering system, speedometer at 0 MPH and every possible error light possible. As I attempted to slow down from 65 MPH on the interstate 5, I noticed I was experiencing complete brake failure and were not functioning properly. With aggressive force, I was able to engage the brakes but noticed an extremely loud metal on metal sound when doing so. In order to come to a stop, I exited at the first off-ramp possible, and popped the curve so I could park the vehicle. The vehicle was taken to Lexus of glendale where they were able to see all the error codes but were unable to repair the issue since they were unable to duplicate it. …
Tl* the contact owns a 2015 Lexus rx450h. The contact stated that the passenger door would not lock manually or with the vehicle remote. The doors would also not lock when the vehicle was in drive. There were no warning indicators illuminated. The dealer and manufacturer were not notified. The vehicle was not diagnosed or repaired. The failure mileage was 52,000.
Tl contact owns a 2008 Lexus rx400. While the contact was driving into a parking space the vehicle suddenly surged forward without warning causing the vehicle to crash into a wall. The vehicle was taken to the dealership where the contact was informed that the failure could not be reproduced. There were no prior warnings. The consumer stated when she exited the vehicle and walked around it, suddenly the windows and moonroof opened. Updated 04/05/10. Updated 4/30/10 updated 07/09/10.
Tl contact owns a 2008 Lexus rx400h. While driving 25 MPH and applying the brakes the lack of electricity in the battery caused the contact to apply excessive pressure to the brake pedal in order to stop the vehicle. Within minutes the brakes began to function normally since the battery recharged by pumping the brakes. The contact took the vehicle to the dealer twice for a diagnostic test and both times the dealer was unable to duplicate the failure. The contact is concerned that the failure could in the braking system could cause a crash to occur. The failure mileage was 22,000.
Hello, I own a 2007 Lexus 400h. On aug 11, 2015 approximately 10 pm the vehicle was traveling on hwy 17 south in myrtle beach sc. The vehicle was sitting at a green light in the turning waiting for on coming traffic. When the traffic cleared my wife proceed to proceed froward with the turn. Once she started her decent the vehicle started blowing coolant out of the front of the vehicle and from the bottom. The vehicle stopped responding leaving her in the middle of the turn. I have looked up online that Lexus recalled 2006 and 2007 Lexus rx400h vehicles. When I called to talk with them about it they told me that mine was not included. This issues is the same issue that they describe on their website. I am very disappointed in Lexus.
Tl* the contact owns a 2007 Lexus rx400h. The contact stated that while driving at 40 MPH, the brake pedal was depressed and felt abnormally soft. The contact stated that there was no warning light illuminated. The vehicle was taken to harvey Lexus located at 2550 28th st se, grand rapids, mi 49512, [phone], to be diagnosed. The contact was informed that the computer control module failed and needed to be repaired. The contact stated that the vehicle was repaired. The vehicle was included in NHTSA campaign number: 13V396000 (electrical system). The manufacturer was not notified of the failure with the vehicle. The approximate failure mileage was 110,000.
Related recalls (1)
Electrical system
Toyota is recalling certain model year 2006-2007 highlander hybrid and Lexus rx400h passenger cars manufactured from February 16, 2005, through August 30, 2006. A module inside the inverter module May contain inadequately soldered transistors that during high-load driving, May be damaged by heat caused by the large current.
Remedy: Toyota/Lexus mailed an interim owner notification on July 19, 2011 to advise owners of this recall and the fact that they will receive a future notice when parts become available to complete repairs.
NHTSA investigations
Unintended and Uncontrolled Acceleration
On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I.
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles.
Frequently asked questions
Which Lexus RX Hybrid years have electrical problems?
By NHTSA complaints, the 2006 (29), 2007 (8) and 2008 (5) model years. Electrical complaints make up 19% of all complaints for the 2006.
Is there a recall for Lexus RX Hybrid electrical problems?
Yes — 1 recall, including 11V-342 (electrical system, Jun 29, 2011). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Lexus RX Hybrid electrical problems start?
Across all years, half of the complaints with a recorded mileage happened before about 79,000 miles; 22% happened before 50,000 miles.
What part fails most often?
Owners most often name the alternator/generator/regulator (2 mentions), followed by the 12v/24v/48v battery (1).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.