Mercedes-Benz SL SERIES Operator's Manual page 115

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.
You can set the distribution of the heated
sections of the seat cushion and backrest
using COMAND ( page 318).
Y
Make sure that the SmartKey is in position
X
1 or 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
defroster or interior lighting.
Once the battery is sufficiently charged,
X
switch on the seat heating again.
Switching the seat ventilation on/off
Activating/deactivating
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
Make sure that the SmartKey is in position
X
2 in the ignition lock.
To switch on: press button : repeatedly
X
until the desired ventilation 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
ventilation may switch off.
i
If you open the roof with the SmartKey
( page 102), the seat ventilation of the
Y
driver's seat switches on automatically and
the side windows open.
Problems with the seat ventilation
The seat ventilation 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 which you
X
do not need, such as the rear window
defroster or interior lighting.
Seats
113
Z