When The Windshield Wiper De-Icer Is On - Lexus GS450h Owner's Manual

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5-2. Using the air conditioning system and defogger
CAUTION

When the windshield wiper de-icer is on

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Do not touch the glass at the lower part of the windshield or to the side of the front
pillars as the surfaces can become very hot and burn you.
GS450h_OM_OM30E26U_(U)