Sienna LE V6-3.0L (1MZ-FE) (1998)
Ambient Light Sensor: Adjustments
ADJUST AUTOMATIC LIGHT CONTROL SENSOR
a. Adjustment of the light control is performed by turning the sensitivity knob on the sensor.
b. This will determine at what light condition the automation control will take place.
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If response is too quick, turn the knob counterclockwise.
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If response is too slow, turn the knob clockwise.