2008 Mercedes S-Class Owner's Manual - Page 336

Controls in detail Locking and unlocking SmartKey with KEYLESS-GO* Vehicles equipped with KEYLESS-GO come with two SmartKeys with KEYLESS-GO, each with remote control and a removable mechanical key. The locking tabs for the mechanical key portion of the two SmartKeys with KEYLESS-GO are of different color to help distinguish each SmartKey with KEYLESS-GO unit. The KEYLESS-GO function is integrated into the SmartKey. On these vehicles, the validity of the SmartKey with KEYLESS-GO is checked every time you grasp an outside door handle. With the KEYLESS-GO function, you can lock and unlock the vehicle without using the remote control buttons on the SmartKey and start the engine without inserting the SmartKey in the starter switch. SmartKey with KEYLESS-GO The SmartKey with KEYLESS-GO centrally locks and unlocks, when set to factory settings ( page 338): the doors the trunk the fuel filler flap i When any outside door handle other than the driver's outside door handle is grasped, the vehicle is centrally unlocked. ! To prevent possible malfunction, avoid exposing the SmartKey with KEYLESS-GO to high levels of electromagnetic radiation. Warning! G When leaving the vehicle, always take the SmartKey with KEYLESS-GO* with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. A child's unsupervised access to a vehicle could result in an accident and/or serious personal injury. Children could start the vehicle with a valid SmartKey with KEYLESS-GO left in the vehicle or with the KEYLESS-GO button on the starter switch, or could release the electronic parking brake, thereby putting themselves and others in danger. Switch off the engine and take the SmartKey with KEYLESS-GO with you even if you are only leaving the vehicle for a short while. 1 ‹ Lock button 2 Š Opening button for trunk ( page 479) 3 Locking tab for mechanical key 4 Œ Unlock button 5 Battery check lamp 6  Panic button ( page 65) 335