2007 Mercedes GL-Class Owner's Manual - Page 142

Controls in detail Seats The switches for second-row seat heating* are located in the rear center console. The red indicator lamps in the switch come on to show which heating level you have selected. Level 3 Three indicator lamps on (highest level) The seat heating automatically switches to level 2 after approximately 5 minutes. 2 1 Seat heating switch*, second-row seats 2 Indicator lamps 1 Two indicator lamps on The seat heating automatically switches to level 1 after approximately 10 minutes. One indicator lamp on (lowest level) The seat heating automatically switches off after approximately 20 minutes. off No indicator lamp on Switch on the ignition ( page 42). 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. i If one or more of the indicator lamps 2 on seat heating switch 1 ( page 140) are flashing, there is insufficient voltage available since too many electrical consumers are switched on. The seat heating switches off automatically. The seat heating will switch back on again automatically as soon as sufficient voltage is available. 141