2008 Mercedes CLK-Class Owner's Manual - Page 127

Controls in detail Seats Seat ventilation* Both switches for the front seats are located in the center console. The blue indicator lamps in the switch 1 show which ventilation level you have selected: Level 3 2 1 off Three indicator lamps on Two indicator lamps on One indicator lamp on No indicator lamp on Switch on the ignition ( page 40). Switching on seat ventilation Press seat ventilation switch 1. Three blue indicator lamps come on. Press seat ventilation switch 1 repeatedly until the desired seat ventilation level is reached. i The seat ventilation for the driver's seat is automatically set to the highest level if activated via summer opening feature ( page 253). Switching off seat ventilation Press seat ventilation switch 1 repeatedly until all blue indicator lamps go out. 1 Seat ventilation switch i If one or more of the indicator lamps on the seat ventilation switch 1 are flashing, there is insufficient voltage due to too many electrical consumers being switched on. The seat ventilation switches off automatically. The seat ventilation will switch back on again automatically as soon as sufficient voltage is available. 126