Mercedes-Benz A-Class 2021 Operator's Manual page 93

Adjusting the 4-way lumbar support
1 Higher
2 Softer
3 Lower
4 Firmer
Using buttons 1 to 4, adjust the contour
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of the backrest individually to suit your back.
Head restraints
Adjusting the front seat head restraints man‐
ually
& WARNING Risk of accident due to
adjusting vehicle settings while the vehi‐
cle is in motion
You could lose control of the vehicle in the
following situations in particular:
If you adjust the driver's seat, the head
R
restraints, the steering wheel or the mir‐
ror while the vehicle is in motion.
If you fasten your seat belt while the vehi‐
R
cle is in motion.
Before starting the engine: adjust the
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driver's seat, the head restraints, the
steering wheel and the mirror and fas‐
ten your seat belt.
Seats and stowing
& WARNING Risk of injury due to head
restraints not being installed or being
adjusted incorrectly
If head restraints have not been installed or
have not been adjusted correctly, there is an
increased risk of injury in the head and neck
area, e.g. in the event of an accident or when
braking.
Always drive with the head restraints
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installed.
Before driving off, make sure for every
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vehicle occupant that the center of the
head restraint supports the back of the
head at about eye level.
Do not interchange the head restraints of the
front and rear seats. Otherwise, you will not be
able to adjust the height and angle of the head
restraints correctly.
Adjust the head restraint fore-and-aft position so
that it is as close as possible to the back of your
head.
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