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Electrical system

Lexus RX400H Electrical problems by year

68 complaints filed with NHTSA about the Lexus RX400H's electrical system. Dead batteries, warning lights, wiring, alternators, infotainment and electronic module failures.

Electrical complaints by model year

YearElectrical complaintsCrashesInjuriesRecalls
200810100
200717001
200639101
20052010

Electrical recalls

Latest RX400H electrical complaints

2008 Lexus RX400HElectrical systemAcceleration & cruise controlEngine & cooling

Dear Sir or Madam. My name is [[redacted]], [[redacted]], [[redacted]] living in [[redacted]]. I bought my 2008 Lexus RX400h car, used, in 2014 at a non-Lexus dealership in the [[redacted]] where I used to live. My Lexus VIN is: [[redacted]]. I've been satisfied with the car..until today. The car had been running smoothly forever, and this morning while I was driving I came to a stop (red light) and the car suddenly shut down completely, including the loss of lights, and the whole dashboard went dark. Other cars...

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behind me were honking their horns. I could not even turn on the hazard lights. After 1-2 minutes, all of the lights/warnings started coming on one after the other. I started the car again and run around three different errands without having further issues. I checked online to see if other owners had experienced a similar situation, which is the case. One person said that there had been two recalls in 2011 and 2013, both related to the inverter module inside the hybrid system. Although, I called today a Lexus dealership, [[redacted]], located in [[redacted]], and I was told there are no recalls for the VIN number that I provided. Another owner said she/he went to a Lexus dealer in [[redacted]] and she was told it was a defect in the gutter drainage design and that water gets into the hybrid system. This is a dangerous and potentially catastrophic situation if the vehicle suddenly shuts down on a freeway/highway putting passengers in risk of harm, injury, or death. This is a horrific defect which Lexus should correct immediately with a recall before one of us ends up at the cementery. I am glad to know that organizations such as the NHTSA exist, and I will appreciate very much that immediate action is taken on this matter. Sincerely, [[redacted]]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Incident Electrical system · Vehicle speed control · EngineNHTSA 11743901
2005 Lexus RX400HElectrical systemEngine & coolingFuel systemFire

My vehicle caught fire a few days after being repaired by a licensed repair shop in California.
The repair was performed by: Brodie's Tire & Automotive
Address: 1276 Petaluma Blvd N, Petaluma, CA 94952
Phone: [[redacted]] After the fire, the repair shop admitted in writing that: • The intake manifold melted after the fire
• The engine became "not repairable"
• The fire occurred shortly after their repair
• They offered to "fix it for free," which indicates awareness of responsibility The fire caused severe heat...

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damage to the engine compartment, electrical wiring, and surrounding components. The vehicle became unsafe to drive, and the engine can no longer operate. This incident presents a serious safety hazard because the fire happened shortly after a repair that involved components near the engine and fuel system. Improper or unsafe repair work may cause similar fires for other consumers. This incident is already under active investigation by: • California Department of Insurance (CDI) - Complaint #[redacted]• California Bureau of Automotive Repair (DCA/BAR) - Case No: [redacted] I am reporting this to NHTSA because the fire and melted engine components indicate a dangerous defect tied to improper repair work, which may pose a risk to other drivers. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 11700694
2008 Lexus RX400HElectrical system

Odometer Fraud. The contact purchased a 2008 Lexus RX 350. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 114,000. It was later discovered that the mileage on the Owner's Title was 265,000 based on a Carfax Report. After speaking to the son of the former owner, the contact was informed that the last known mileage was 278,000.

Filed Incident Electrical systemNHTSA 11682165
2008 Lexus RX400HElectrical system

Odometer Fraud. The contact purchased a 2008 Lexus RX350. The contact stated that while obtaining a Carfax report, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 124,000. The contact stated that after obtaining the Carfax report, it was discovered that the mileage was 211,000.

Filed Incident Electrical systemNHTSA 11671076
2007 Lexus RX400HElectrical system

Put key into ignition port and heard and felt a klunk. Key was then freely moving and connecting to nothing inside the ignition chamber. So vehicle would not turn over at all. Had towed to town closer to home. And Currently having towed to mechanic shop for further evaluation. The only symptom the car was having previously was a mysterious scratching sound coming from what sounded like the right side of the hood near the firewall. Took to mechanic and he drove the car and heard the sound but could not pin...

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point it, said nothing was scrubbing the fan or anything else he could see. And to bring it back if it got worse. Never did we think it was the starter nor the ignition chamber. The only way to know now....is to replace it and see if that noise is still there. There were no other warnings. The danger in this is being stranded. Still needs to be evaluated by mechanic.

Filed Incident Electrical systemNHTSA 11648978
2006 Lexus RX400HElectrical systemEngine & cooling

From what I have been reading on that year and model, there seems to be major issues with the invertors. Like many I was driving on the highway and the vehicle just quits. This put me and many others in a very dangerous situation and I could have been hit at high rates of speed. If as many people are having these issues, then Lexus needs to step up and recall this part before someone gets killed

Filed Incident Electrical system · Unknown or other · EngineNHTSA 11648884
2006 Lexus RX400HTransmission & drivetrainElectrical systemBrakes

There are multiple recalls on my vehicle and I am experiencing all of the recalls Inverter Failer vehicle stalls out alot. Crank shaft pulley is leaking oil and belt from the power steering maybe detached causing vehicle to stall. Inverter Assembly causing the vehicle to stall and become non drivable. Floor carpet cover and retention clips. And my brake master cylinder leaking fluid causing major break problems. Every item i mentioned is recalls for the vehicle i have

Filed Incident Power train · Electrical system · Service brakesNHTSA 11645809
2006 Lexus RX400HSteeringElectrical systemEngine & cooling

The power steering and hybrid system failed and vehicle completely stopped in middle of busy freeway with no prior warnings or issues before. The safety of my son and I, and others around me during the abrupt stop of the engine. I could not move out of way. The vehicle has been serviced for this exact issue during a recall campaign lasting from 2011 to 2014. Ten years later and it is still happening! There were NO warning lamps or messages or symptoms prior to this failure. It just passed vehicle inspections for the year

Filed Incident Steering · Electrical system · EngineNHTSA 11631799
2006 Lexus RX400HElectrical systemEngine & coolingDriver assistance

Dear manager: I have this 2006 LEXUS RX400H which has CHECK VSC SYSTEM and CHECK HYBRID SYSTEM problems. When I was driving on the highway, the cruise control button is unable to turn on, when at speed of 65 MPH it will suddenly stall in the middle of the road and the READY light will be off and the vehicle has to be stopped by the emergency lane which is REALLY DANGEROUS. I have searched online and found out there were many complains about this issue and LEXUS issued a recall for this type of car and the...

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dealer can change the inverter and ICM free of charge. This recall link is as follows: https://static.nhtsa.gov/odi/rcl/2011/RCONL-11V342-6633.pdf So tonight I am sending this message to see if you can help me to solve this problem.

Filed Incident Electrical system · Engine · Forward collision avoidanceNHTSA 11548538
2006 Lexus RX400HElectrical system

Hello, I had this issue on my lexus rx400h recently, and it was diagnosed and repaired by a third party auto repair shop at my expense. I want to know if I have any recourse to recover my cost approx $700. Thanks! Vin recall consequence: the vehicle may enter a fail-safe/limp-home mode that limits the drivability of the vehicle. It is possible that the hybrid system will shut down while the vehicle is being driven, causing the vehicle to stall unexpectedly, increasing the risk of a crash. Recall summary toyota...

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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. If this occurs, various warning lamps, including the malfunction indicator lamp, slip indicator light, brake system warning light, and master warning light, will be illuminated on the instrument panel. Recall solution 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. Toyota dealers will inspect the hybrid inverter production number to determine whether the inverter contains suspect transistors and replace the module free of charge. Owners may contact toyota at 1-800-331-4331.

Filed Incident Electrical systemNHTSA 11542555
2006 Lexus RX400HElectrical systemBrakesFuel system

I am financing a 2006 Lexus rx400h hybrid and the other day I went out to start it up and the light and everything came on but would not display ready and would not start. Check hybrid system with red triangle was on dash display along with several other warning lights, also when I put the key in the ignition it will release in the ACC position. Where I am purchasing the vehicle will not fix it saying my Vin is not part of the recall list and the lexus dealership to me it was to late to have the recalled parts replaced for free. What do I do?

Filed Incident Electrical system · Service brakes · Fuel / propulsion systemNHTSA 11524097
2006 Lexus RX400HTransmission & drivetrainElectrical system

This vehicle seems to have a well-documented problem with water intrusion that damages the ECU and hybrid battery. The 2006 and 2007 RX400h has the HV battery located under the seat, which is the low spot in the rear section of the car. If water is spilled or the body has a water leak, the water will pool at the center of the battery. Lexus considered this, and added a drain under the battery, but the drain has a filter, presumably to keep insects out, and the filter is easily clogged. This, coupled with a...

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pattern problem of split body seams near the rear hatch strut mount causing a water leak in the rear of the car, has created isolation faults in many of the RX400h SUVs. The condition presents as warnings on the instrument cluster and a no-start condition where the vehicle is inoperable. A search for "lexus ECU water intrusion" brings up my vehicle's exact model and year so this is well-documented.

Filed Incident Power train · Electrical systemNHTSA 11504233
2007 Lexus RX400HSteeringElectrical systemBrakes

Electrical system malfunction began (to my best calculation & recollection) in summer 2021 with the first of four battery malfunctions in one year. Each time, AAA discovered low battery response and recommended battery replacement. This time around, battery was replaced about two weeks prior, due to battery failure/AAA reporting would not accept charge. THE NEW BATTERY FAILED (8/3) and the starter broke while attempting to charge. Mechanic repaired starter and battery accepted the charge. No problem, right?...

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Wrong. This driver drove about 30 miles and while driving, the electrical system shut down altogether. With I believe ALL WARNING LIGHTS LIGHTING UP, extremely dangerous situation. NO BREAKING, NO STEERING, NO WARNING. Fortunately, it occurred in a suburban residential area as opposed to the highway. SECOND tow to my mechanic and now, after a full week, no diagnosis, though the car has been running in the shop. This is an intermittent problem. I suspect the alternator.

Filed Incident Steering · Electrical system · Service brakesNHTSA 11479110
2006 Lexus RX400HElectrical system

The contact owns a 2006 Lexus RX400H. The contact stated that while driving at 50 MPH, the "All-Wheel Drive and Hybrid System Failure" warning messages were displayed. The vehicle was taken to an independent mechanic and diagnosed with inverter assembly failure. The vehicle was not repaired and remained with the independent mechanic. The manufacturer was made aware of the failure but informed the contact that there was no recall associated with the VIN. The contact related the failure to NHTSA Campaign Number: 11V342000 (Electrical System) however, the VIN was not included in the recall. The failure mileage was approximately 150,000.

Filed Incident Electrical systemNHTSA 11449610
2008 Lexus RX400HElectrical systemFire

The contact owns a 2008 Lexus RX350. The contact stated that while driving at 40 MPH, she saw smoke coming from the front passenger seat. There were no warning lights illuminated. The contact pulled into a parking lot and parked the vehicle until the smoke vanished. The dealer was notified of the failure and advised the contact that they could not assist. The manufacturer was notified of the failure and advised the contact that an agent of the Federal Department of Agriculture would inspect the vehicle and would...

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send them a report. The contact stated that the vehicle was taken to the same dealer and was inspected on February 10, 2021 by a Federal Department of Agriculture agent who also disconnected the heating system of the front passenger seat. The contact stated that the manufacturer had not followed up with her since then. The vehicle was not repaired. The failure mileage was approximately 160,691.

Filed Incident Electrical systemNHTSA 11446883

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

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