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

Controls in detail Seats Seat heating Vehicles without seat ventilation* The red indicator lamps on the switch indicate the selected heating level: Level 2 Two red indicator lamps on (rapid seat heating) The seat heating automatically switches to level 1 after approximately 5 minutes. 1 One red indicator lamp on (normal seat heating) The seat heating automatically switches off after approximately 30 minutes. off No indicator lamp on 1 Normal heating 2 Rapid heating Switch on the ignition ( page 40). Switching on seat heating Press lower switch position 1. A red indicator lamp on the switch comes on. Switching off seat heating Press lower switch position 1 once more. Switching on rapid seat heating Press upper switch position 2. Both red indicator lamps on the switch come on. Switching off rapid seat heating Press upper switch position 2 once more. i If one lamp or both lamps on the seat heating switch are flashing, there is insufficient voltage available since too many electrical consumers are turned on. The seat heating switches off automatically. The seat heating will switch back on again automatically as soon as sufficient voltage is available. 126