Lexus GS430 User Manual page 61

If a wrong key is used, the key cylinder rotates freely to isolate
inside mechanism. So, door locking is protected from thieves.
The windows and moon roof can be opened and closed from
outside the vehicle using a mechanical key. For details, see
"Power window switches" on page 59 and "Moon roof" on page
136.
Locking with inside lock button
G11002a
" 1 Lock
2 Unlock
Push in the lock button to lock and unlock the door.
The front doors can be opened by pulling the inside handles
even if the lock buttons are in the locked position.
CAUTION
Do not pull the inside handle of the front doors while
driving. The doors will open and an accident may occur.
Lexus strongly recommends that all children be placed
in the rear seat of the vehicle.
KEYS AND DOORS
37