Mercedes-Benz M-Class 2006 Owners Manual - Manual (Page 135)

134
Controls in detail
Seats
Switching on seat heating
̈ Press switch 1.
Three red indicator lamps in the switch
come on.
̈ Continue pressing switch 1 until
desired seat heating level is reached.
Switching off seat heating
̈ Press switch 1 repeatedly until all
indicator lamps go out.
i
The seat heater will be automatically
switched off after approximately
20 minutes.
i
If one or more of the indicator lamps on
the seat heater switch are flashing,
there is insufficient voltage available
since too many electrical consumers
are turned on. The seat heater switches
off automatically.
The seat heating will switch back on
again automatically as soon as
sufficient voltage is available.