2008 Mercedes SL-Class Owner's Manual - Page 129

Controls in detail Seats Seat ventilation* The blue indicator lamps on the switch indicate the selected ventilation level: Level 3 2 1 off Three blue indicator lamps on (highest level) Two blue indicator lamps on One blue indicator lamp on (lowest level) No blue indicator lamp on 1 Seat ventilation switch Switch on the ignition ( page 40). Switching off seat ventilation Press switch 1 repeatedly until all blue indicator lamps go out. Switching on seat ventilation Press switch 1. Three blue indicator lamps on the switch come on. Continue pressing switch 1 until the desired seat ventilation level is reached. i If one or all of the lamps on the seat ventilation switch are flashing, there is insufficient voltage available since too many electrical consumers are turned on. The seat ventilation switches off automatically. The seat ventilation will switch back on again automatically as soon as sufficient voltage is available. 128