Lexus GS350 rear window defroster malfunction and intermittent vibration at low speeds on Lexus GS350

Some Lexus GS350 owners report experiencing a malfunctioning rear window defroster, which may be caused by blown fuses, a faulty defogger switch, or issues such as corrosion and damaged wiring. These owners often troubleshoot the defroster by checking the fuses, but if the problem persists, they may need to inspect the defogger switch for faults that require replacement. Additionally, some Lexus GS350 owners report intermittent vibrations at low speeds, potentially linked to problems with the air conditioning system, door lock actuators, or drivetrain and suspension components. It is recommended that these owners seek inspection by a qualified mechanic to accurately diagnose and resolve the underlying issues.