2008 Mercedes R-Class Owner's Manual - Page 141

Controls in detail Seats Switching on Press switch 1. Three red indicator lamps 2 in the switch come on. Continue pressing switch 1 until desired seat heating level is reached. Switching off Press switch 1 repeatedly until all indicator lamps 2 go out. Seat ventilation* (Canada only) Seat ventilation is available on the R 550 4MATIC only. The switches for the seat ventilation are located in the center console. The blue indicator lamps in the switch come on to show which ventilation level you have selected. Level 3 2 1 off Three indicator lamps on (highest level) Two indicator lamps on One indicator lamp on (lowest level) No indicator lamp on i If one or more of the indicator lamps 2 on seat heating switch 1 ( page 139) are flashing, there is insufficient voltage due to too many electrical consumers being switched on. The seat heating switches off automatically. The seat heating will switch back on again automatically as soon as sufficient voltage is available. Switch on the ignition ( page 39). Switching on 1 Seat ventilation switch 2 Indicator lamps Press switch 1 repeatedly until the desired ventilation level is set. i The seat ventilation for the driver's seat is automatically set to the highest level if activated via summer opening feature ( page 244). Switching off Press switch 1 repeatedly until all indicator lamps 2 go out. 140