Toyota—Lexus RX400h (MHU38)
What are the defects?
The inverter assembly is part of the hybrid system. The transistors on the control boards located inside the inverter assembly in some of the involved vehicles were inadequately soldered, and could be damaged by heat that occurs from large current flows that are typical under high-load driving conditions. If this occurs, various warning lamps will be illuminated on the instrument panel and in most instances the vehicle will enter a fail-safe driving mode, resulting in reduced power.
What are the hazards?
In the worst case, the power supply fuse may open circuit resulting in the hybrid system stopping whilst the vehicle is being driven.
What should consumers do?
All owners of affected vehicles will be contacted by Lexus Australia by phone and / or recall campaign letter at their last known address.
Owners are advised to contact their authorised Lexus Dealership for inspection and rectification.