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- Be sure the ignition is on and that the mirror is
on. The green LED light to the right of the main
display switch will be lit when the mirror is on. If
it’s not, depress the "TEMP" side of the main
display switch for 15 seconds.
- Cover the forward-facing light sensor on the back of
the mirror with a black cloth.
- While in a well-lit area, make sure light strikes
the sensor on the front of the mirror, simulating
glare from vehicles behind you. The mirror will dim
within 2 minutes if testing for the first time. If
the mirror does not dim, replace the inside rear
view mirror.
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