Seat Heating Problem - Mercedes-Benz 2015 M-Class Operator's Manual

Seats
110
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
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
Turn the SmartKey to position 2 in the igni-
X
tion lock ( page 157).
Y
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
You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (
tilation of the driver's seat automatically
switches to the highest level.
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.
Once the battery is sufficiently charged, the seat heating will
switch back on automatically.
page 95). The seat ven-
Y