The front seats may be optionally fitted with a special heating
system (consisting of two heater elements located in the cushion
and squab): these heat the seat to ease the discomfort of entering
a cold passenger compartment in very cold weather, e.g. when the
car is left outside for long periods during winter.The heating device located in each seat
consists of two resistors operated by a switch located on the outside
of each seat.Once a certain temperature is reached, the
heating action is automatically cut off by a thermal contact inside
the device.An LED located on the button itself indicates
when the resistors are switched on.The circuit is controlled by the services
relay and is protected by a specific fuse, both located in the unit
under the dashboard. The heating is switched on both when the ignition is
on and when the ignition is off.With the ignition on during starting, this
relay is temporarily deactivated.With the ignition off, the Body Computer
keeps the relay activated - which also supplies the door mirrors
and electric windows - for 3 minutes, but deactivates it immediately when
one of the two front doors is opened.The switching on of the resistors is disabled
if the battery voltage is less than 10 V.