Toyota 2014 Sienna Manual page 295

Type B
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The rear window wiper and washer 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.
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If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the
windshield washer fluid reservoir.
SIENNA_OM_OM45483U_(U)
2-3. Operating the lights and wipers
Off
Intermittent window
wiper operation
Normal window
wiper operation
Washer/wiper
operation
Washer/wiper
operation
dual
2
dual
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