Mercedes-Benz E-Class Sedan 2012 Operator's Manual page 108

Seats
106
8
Rear seats
The system automatically switches down
from level 3 to level 2 after about eight
minutes (driver's seat and front-passenger
seat) or five minutes (rear seats).
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.
X
Make sure that the SmartKey is in position
2 in the ignition lock.
X
To switch on: press button : repeatedly
until the desired heating level is set.
X
To switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat heating
The seat heating has switched off
prematurely or cannot be switched on. The
vehicle's electrical system voltage is too low
because too many electrical consumers are
switched on.
X
Switch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
8 For Canada only.
Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
i If the battery voltage is too low, the seat
ventilation may switch off.
X
Make sure that the SmartKey is in position
2 in the ignition lock.
X
To switch on: press button : repeatedly
until the desired ventilation level is set.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature ( Y
ventilation of the driver's seat
automatically switches to the highest level.
X
To switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation
The seat ventilation has switched off
prematurely or cannot be switched on. The
vehicle's electrical system voltage is too low
because too many electrical consumers are
switched on.
X
Switch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
page 91). The seat