Mercedes-Benz GL-Class 2013 Owners Manual - Manual (Page 116)

Problems with the seat heating
Problem Possible causes/consequences and M Solutions
The seat heating has
switched off
prematurely or cannot
be switched on.
The on-board voltage is too low because too many electrical
consumers are switched on.
X Switch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will
switch back on automatically.
Switching the seat ventilation on/off
Activating/deactivating
The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
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.
X To switch off: press button : repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (
Y
page 93). The seat
ventilation of the driver's seat
automatically switches to the highest level.
114
Seats
Seats,
steering
wheel
and
mirrors