2006 Mercedes SL-Class Owner's Manual - Page 120

Controls in detail Seats Switching on seat heating Press upper switch position 1 twice. A red indicator lamp on the switch comes on. Switching off seat heating Press upper switch position 1 again. Switching on rapid seat heating Press upper switch position 1 once. Both indicator lamps on the switch come on. Switching off rapid seat heating Press upper switch position 1 twice. i If one or both of the 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. i The system switches to normal heating mode after approximately 5 minutes. Only the right-hand indicator lamp remains lit. i The seat heating will be automatically switched off after approximately 30 minutes. 119