2009 Lexus LS 600h Owners Manual - Page 51

1-3. Opening, closing and locking the doors and trunk STEP 3 Unlock the doors using the wireless remote control and open one of the doors. If a door is not opened within 60 seconds after is pressed, the doors will be locked again and the alarm will automatically be set. In case that the alarm is triggered, immediately stop the alarm. (→P. 119) n Battery-saving function In the following circumstances, the entry function is disabled in order to prevent the 12-volt battery from discharging and the electronic key battery from depleting. l When the entry function has not been used for a month or more l When the electronic key has been left within approximately 6 ft. (2 m) of the vehicle for 10 minutes or more The system will resume operation when l The vehicle is locked using the door handle lock switch when carrying the elec- tronic key on your person. l The vehicle is locked/unlocked using the wireless remote control function. (→P. 59) l The vehicle is locked/unlocked using the mechanical key. (→P. 634) n Electronic key battery depletion l The standard battery life is 1 to 2 years. (The card key battery life is about a year and a half.) l The battery becomes depleted even if the electronic key is not used because the key always transmits radio waves. If the smart access system with push-button start or the wireless remote control does not operate, or the detection area becomes smaller, the battery may be depleted. Replace the battery when necessary. (→ P. 559) l To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) of the following electrical appliances that produce a magnetic field TVs Personal computers Cellular phones, cordless phones and battery chargers Recharging cellular phones or cordless phones Glass top ranges Table lamps 52