2005 Mercedes SL-Class Owner's Manual - Page 119

Controls in detail Seats Seat heating Vehicles without seat ventilation* The switch is located on the door. Switching off seat heating Press lower switch position 1 again. Switching off rapid seat heating Press upper switch position 2 again. i The seat heating will be automatically switched off after approximately 30 minutes. Switching on rapid seat heating Press upper switch position 2. Both red indicator lamps on the switch come on. ! If one or both of the lamps on the seat heating switch are flashing, there is insufficient voltage available since too many electrical consumers are turned on. The seat heating switches off automatically. The seat heating will switch back on again automatically as soon as sufficient voltage is available. 1 Normal heating 2 Rapid heating Switch on the ignition ( page 36). Switching on seat heating Press lower switch position 1. A red indicator lamp on the switch comes on. i The system switches to normal heating mode after approximately five minutes. Only the right-hand indicator lamp remains lit. 117