2004 Mercedes SL-Class Owner's Manual - Page 113

Controls in detail Seats Switching off rapid seat heating Press upper switch position 1 twice. Seat ventilation* (standard on SL 600) The switch is located on the door. The blue indicator lamps on the switch indicate the selected ventilation level: Level 3 2 1 off Three indicator lamps on Two indicator lamps on One indicator lamp on No indicator lamp on 1 Seat ventilation switch Make sure the ignition is switched on. All the lamps in the instrument cluster 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. 112