Mercedes-Benz SL 320 Operator's Manual page 38

Heated Seats
The seat heaters can be switched on
with the key in steering lock turned to
position 1 or 2.
Press switch to turn on heater:
1. Normal heating mode. One
indicator lamp in the switch
lights up.
2. Rapid heating mode. Both
indicator lamps in the switch
light up.
After approximately 5 minutes in
the rapid heating mode, the heater
automatically switches to normal
operation and only one indicator
lamp will stay on.
Turning off heater:
If one indicator lamp is on, press upper
half of switch.
If both indicator lamps are on, press
lower half of switch.
If left on, the heater automatically turns
off after approximately 30 minutes of
operation.
Note:
When in operation, the seat heater
consumes a large amount of power. It
is advisable not to use the seat heater
longer than necessary.
The seat heaters may automatically
switch off if too many power
consumers are switched on at the same
time, or if the battery charge is low.
When this occurs, the indicator lamp in
the switch will blink (both indicator
lamps blink during rapid seat heating).
The seat heaters will switch on again
automatically as soon as sufficient
voltage is available.
If the blinking of the indicator lamps is
distracting to you, the seat heaters can
be switched off.
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