Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 110

108 Seats and stowing
You can adjust the seats when the ignition is
switched off.
& WARNING Risk of becoming trapped dur-
ing seat adjustment
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail.
Make sure when adjusting a seat that no
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one has any body parts in the sweep of
the seat.
Observe the safety notes on "Airbags" and "Chil-
dren in the vehicle".
& WARNING Risk of injury if vehicle settings
are adjusted while the vehicle is in motion
You could lose control of the vehicle in partic-
ular in the following situations:
If you adjust the driver's seat, the head
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restraints, the steering wheel or the mirror
while the vehicle is in motion.
If you fasten your seat belt while the vehi-
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cle is in motion.
Before starting the engine: adjust the
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driver's seat, head restraints, steering
wheel and mirror in particular and fasten
your seat belt.
& WARNING Risk of becoming trapped if the
seat height is adjusted carelessly
If you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured.
Children in particular could accidentally press
the electrical seat adjustment buttons and
become trapped.
While moving the seats, make sure that
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hands or other body parts do not get
under the lever assembly of the seat
adjustment system.
& WARNING Risk of injury due to incorrectly
adjusted head restraints
If head restraints have not been adjusted cor-
rectly, there is an increased risk of injury in
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the head and neck area, e.g. in the event of an
accident or sudden braking.
Before driving off, make sure for every
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vehicle occupant that the centre of the
head restraint supports the back of the
head at about eye level.
Adjust the head restraint fore-and-aft position so
that it is as close as possible to the back of your
head.
& WARNING Risk of injury or death due to
incorrect seat position
The seat belt will not offer the intended level
of protection if you have not moved the seat
backrest to an almost vertical position.
In particular, you may slip under the seatbelt
and injure yourself.
Adjust the seat properly before begin-
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ning your journey.
Always ensure that the seat backrest is
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in an almost vertical position and that
the shoulder section of your seat belt is