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Electrical system

Lexus IS 350 Electrical problems by year

2 complaints filed with NHTSA about the Lexus IS 350's electrical system. Dead batteries, warning lights, wiring, alternators, infotainment and electronic module failures.

Electrical complaints by model year

YearElectrical complaintsCrashesInjuriesRecalls
20261000
20231000

Latest IS 350 electrical complaints

2026 Lexus IS 350Electrical system

This sounds like the "What happened?" box on the NHTSA complaint form. If so, copy and paste this: --- The vehicle repeatedly fails to start after being parked for several days. When it fails, it either clicks with no crank or has no electrical power at all. August 22, 2026 (about 792 miles): The vehicle needed a jump start. The dealer found the 12-volt battery failed a load test and replaced it under warranty. The vehicle was at the dealer August 22-23. October 10, 2026: The vehicle would not turn on and had...

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no power inside. It was at the dealer October 10-16. The problem was not fixed. October 21, 2026: The vehicle went back in for the same problem at a second Lexus dealer, and it is still there as of October 29. The problem continued after the battery was replaced. In total the vehicle has been out of service at least 15 days within its first six months. The dealer suggested driving the car more often, which works around the problem but doesn't fix it. A new vehicle should start after sitting a few days. Other owners of the 2026 IS 350 report the same no-start problem and being given the same advice. I have opened a case with Lexus (Case #261014000097) and sent written notice to the manufacturer.

Filed Incident Electrical systemNHTSA 11774314
2023 Lexus IS 350Electrical systemBrakesEngine & cooling

I am reporting a severe, unresolved safety hazard involving my 2023 Lexus IS350]. The vehicle is continuously flashing 'Braking System Malfunction,' 'Crash Light,' and 'Engine Light' alerts on the dashboard. This is the second major acceleration and braking system failure since purchasing the vehicle brand new.The authorized dealership, Meade Lexus, has repeatedly failed to properly diagnose or repair this critical braking issue over a 7-month period. On multiple service visits, the dealership documented that they...

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simply 'lubed' the rubber around the gas cap, reset the dashboard warning lights, and returned the vehicle to me without performing actual mechanical repairs to the braking system. The service manager explicitly instructed me that I must drive the vehicle back to the dealership every single week just to have the safety lights turned off manually. Driving a vehicle with an active, un-diagnosed braking and crash-system fault is a major safety liability and makes the vehicle dangerous to operate. The manufacturer and dealer have failed to resolve this safety defect under warranty."

Filed Incident Electrical system · Service brakes · EngineNHTSA 11753916

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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