Toyota LEXUS LS430 2005 Manual page 31

KEYS AND DOORS
Starting the engine using an engine start flat
key
11L251a
1. Remove the engine start flat key from the key case.
2. Insert it into the ignition switch.
The flashing security indicator light goes out. This means the
engine immobilizer system is automatically canceled. (For
details, see "Engine immobilizer system" on page 17.)
NOTICE
D Do not let the key case become bent as the flat keys
may fall out or become bent also.
D The flat keys are designed for emergency use only, so
do not use them regularly instead of the other master
keys.
12
11L220
NOTICE
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.