2006 Mercedes E-Class Owner's Manual - Page 138

Controls in detail Seats Switching seat ventilation on Press button 1 repeatedly until the desired ventilation level is set. i The seat ventilation is automatically set to the highest level if activated via summer opening feature ( page 234). 1 Seat ventilation switch Switch on the ignition ( page 36). Switching seat ventilation off Press button 1 repeatedly until all indicator lamps go out. i If one or more 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. 137