2006 Lexus IS 350 Owners Manual - Page 27

1-2. Opening, closing and locking the doors and trunk n Electronic key battery depletion l The standard battery life is 1 to 2 years. (The battery becomes depleted even if the electronic key is not used.) If the smart access system with push-button start or the wireless remote control function does not operate, or the detection area becomes smaller, the battery may be depleted. Replace the battery when necessary. (→ P. 297) l To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) of the following electrical appliances TVs Personal computers Recharging cellular phones or cordless phones Table lamps n To operate the system properly Make sure to carry the electronic key when operating the system. Do not get the electronic key too close to the vehicle when operating the system from the outside of the vehicle. Depending on the position and holding condition of the electronic key, the key may not be detected correctly and the system may not operate properly. (The alarm may go off accidentally, or the door lock prevention may not function.) 10