Mazda mx-5 2017 Owner's Manual page 86

Before Driving
Mirrors
NOTE
Do not use glass cleaner or suspend

objects on or around the light sensor.
Otherwise, light sensor sensitivity
will be affected and may not operate
normally.
For information regarding the 3 buttons

( , , ) on the auto-dimming
mirror.
Refer to HomeLink Wireless Control
System on page 4-57.
The auto-dimming function is canceled

when the ignition is switched ON and
the shift/selector lever is in reverse (R).
3–30
Light sensor