Mercedes-Benz B-Class 2011 Owner's Manual page 93

Seats
90
Press release catch : and pull the head
X
restraint out of the guides.
To refit: insert the head restraint so that
X
the notches on the bar are on the left when
viewed in the direction of travel.
Push the head restraint down until you hear
X
it engage in position.
Adjusting the 4-way lumbar support
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back.
To raise the backrest contour
:
To soften the backrest contour
;
To lower the backrest contour
=
To harden the backrest contour
?
Switching the seat heating on/off
Switching on/off
G WARNING
Repeatedly setting the seat heating to level
3 may result in excessive seat temperatures.
The health of passengers that have limited
temperature sensitivity or a limited ability to
react to excessively high temperatures may
be affected or they may even suffer burn-like
injuries. Therefore, do not use seat heating
level 3 repeatedly.
The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches down
from level 3 to level 2 after approximately
eight minutes.
The system automatically switches down
from level 2 to level 1 after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
Make sure that the key is in position 1 or
X
2 in the ignition lock.
To switch on: press button : repeatedly
X
until the desired heating level is set.
To switch off: press button : repeatedly
X
until all the indicator lamps go out.
i
If the battery voltage is too low, the seat
heating may switch off.
Problems with the seat heating
The seat heating has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
Switch off electrical consumers that you do
X
not need, such as the rear window heating
or interior lighting.