This feature is used to prevent ice from building up on the windshield and wiper blades.
Turns the windshield wiper deicer on/off
The windshield wiper de-icer will automatically turn off after approximately 15 minutes.
The windshield wiper de-icer can be operated when Vehicles without a smart key system The engine switch is in the “ON” position. Vehicles with a smart key system
The “ENGINE START STOP” switch is in IGNITION ON mode.
CAUTIONWhen the windshield wiper de-icer is on
Do not touch the lower part of the windshield or the side of the front pillars, as the surfaces can become very hot and burn you.
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Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.