2011 Lexus IS 350 User Guide - Page 511

5-2. Steps to take in an emergency If the electronic key does not operate properly If communication between the electronic key and vehicle is interrupted (→P. 32) or the electronic key cannot be used because the battery is depleted, the smart access system with push-button start and wireless remote control cannot be used. In such cases, the doors and trunk can be opened or the engine can be started by following the procedure below. Locking and unlocking the doors, unlocking the trunk Doors Remove the cover on the driver's door handle using the mechanical key (→P. 25) in order to perform the following operations. Locks both side doors Unlocks the door Turning the key rearward unlocks the driver's door. Turning the key once again unlocks the passenger's door. Return the cover to the original position after use. 522