Mercedes-Benz C-Class Coupe Operator's Manual page 101

Problems with the seat heating
Problem
The seat heating has
switched off prema-
turely or cannot be
switched on.
Switching the seat ventilation on/off
Activating/deactivating
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
i
If the battery voltage is too low, the seat
ventilation may switch off.
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.
i
You can open the front side windows and
the sliding sunroof using the "Convenience
opening" feature (
Y
tilation of the driver's seat automatically
switches to the highest level.
To switch off: press button : repeatedly
X
until all the indicator lamps go out.
Possible causes/consequences and M M Solutions
The on-board voltage is too low because too many electrical con-
sumers are switched on.
Switch off electrical consumers that you do not need, such as
X
the rear window defroster or interior lighting.
page 133).
Y
page 86). The seat ven-
Seats
99
Z