From the manual is this what you mean
Rear view mirror with automatic anti-dazzle function*
The anti-dazzle function is activated every
time the ignition is switched on.
When the anti-dazzle function is enabled,
the interior rear vision mirror will darken automatically according to the amount of light
it receives. The anti-dazzle function is cancelled if reverse gear is engaged.
WARNING
In the event that an automatic anti-dazzle
rear vision mirror breaks, an electrolyte fluid may leak. This could cause irritation to
the skin, eyes and respiratory organs. If you
come into contact with this liquid, it must
be rinsed with large quantities of water. If
necessary, get medial
help.
CAUTION
In the event that an automatic anti-dazzle
rear vision mirror breaks, an electrolyte fluid may leak. This liquid attacks plastic surfaces. Clean it with a wet sponge as soon as
possible.
Note
● If the light incident in the interior rear vision mirror is obstructed (e.g. with the sun
blind*), the anti-dazzle rear vision mirror
with automatic setting will not operate perfectly.
● When the interior lights are on or reverse
gear engaged, the mirrors do not darken
with automatic adjustment for anti-dazzle
position.
● If you have to stick any type of
sticker on
the windscreen, do not do so in front of the
sensors. Doing so could prevent the antidazzle function from working well or even
from working
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