2003 Lexus GS 300 Owners Manual - Page 31

KEYS AND DOORS NOTICE D Do not let the key case become bent as the key plate may fall out or become bent also. D The flat key is designed for emergency use only. So do not use it regularly instead of other master keys. 11R055 11L021-2 When using a key containing a transponder chip, observe the following precautions: D When starting the engine, do not use the key with a key ring resting on the key grip and do not press the key ring against the key grip. Doing so may prevent the engine from starting, or may cause the engine to stop soon after it starts. D When starting the engine, do not use the key in proximity with other transponder keys (including the flat key and keys of other vehicles), and do not press other key plates against the key grip. Doing so may prevent the engine from starting, or may cause the engine to stop soon after it starts. If this happens, remove the key once and then insert it again after removing other transponder keys (including the flat key and keys of other vehicles) from the ring or while gripping or covering them with your hand to start the engine. 10