SYSTEM DIAGRAM 
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Window Defogger System(for Hv Model): System Description
SYSTEM DESCRIPTION GENERAL (a) The rear window defogger wire (back window glass) is attached to the inside of the rear window and defogs the window surface quickly when the rear window defogger switch is pressed. The indicator light on the switch illuminates while the system is operating. This syste ...
