2010 Lexus RX 350 Owners Manual - Page 26

1-1. Key information Using the mechanical key To take out the mechanical key: Electronic keys: Slide the release lever and take the key out. Card key: Press the lock release button and take the key out. If the key cannot be inserted in a lock cylinder, turn it over and reattempt to insert it. Mechanical keys with grooves on one side can be inserted in one direction only. After using the mechanical key, store it in the electronic key. Carry the mechanical key together with the electronic key. If the electronic key battery is depleted or the entry function does not operate properly, you will need the mechanical key. (→P. 586)