2000 Mercedes S-Class Owner's Manual - Page 33

Instruments and controls Operation Driving Instrument cluster display 30 Practical hints Car care Technical data Index Central locking system Electronic reserve key The electronic reserve key (1) works only in the starter switch. There are no batteries inside the electronic reserve key. The mechanical key (2) works only in the driver's door, trunk, and storage compartment locks. 1 To use the mechanical key (2), remove it from its electronic reserve key (1). Note: We recommend that you carry the electronic reserve key plus mechanical key with you and keep it in a safe place (e.g. your wallet) so that it is always handy. Never leave the electronic reserve key in the vehicle. P80.35-2036-26 The electronic reserve key is without remote control functions, plus removable mechanical key.