Lexus 2008 IS250 Owner's Manual page 72

CAUTION
Changes or modifications not expressly approved by the party responsible for com-
pliance could void the user' s authority to operate the equipment.
NOTICE
To prevent damage to the key
n
Do not modify, remove or disable the engine immobilizer system. If any unautho-
rized changes or modifications are made, the proper operation of the system can-
not be guaranteed.
1-6. Theft deterrent system
1
73