2003 Mercedes S-Class Owner's Manual - Page 110

Controls in detail Seats Seat ventilation* The switch is located on the door. Seat ventilation can be activated manually with the SmartKey in starter switch position 1 or 2 ( page 31) or by the summer opening feature ( page 190). The blue indicator lamps on the switch show the ventilation level selected: Level 3 2 1 off Three indicator lamps lit Two indicator lamps lit One indicator lamp lit No indicator lamp lit 1 Seat ventilation switch Make sure the ignition is switched on. All lamps in the instrument cluster light up. Switching on seat ventilation Press switch 1. Three blue indicator lamps above the switch light up. Continue pressing switch until the desired seat ventilation level is reached. Switching off seat ventilation Press switch 1 repeatedly until all indicator lamps go out. i The seat ventilation is automatically set to the highest level if activated via summer opening feature ( page 190). ! If one or all of the lamps blink on the seat ventilation switch, there is insufficient voltage since too many electrical consumers are switched on. The seat ventilation switches off automatically. The seat ventilation will switch back on again automatically as soon as sufficient voltage is available. 110