Lexus LS460 Owner's Manual page 906

876
7-2. Steps to take in an emergency
CAUTION

When releasing the parking brake manually

Shift the shift lever to P, turn the engine switch off and chock the tires.
Failure to do so may cause the vehicle to move, resulting in an accident.

Turn the engine switch off and check that the parking brake indicator is
off.
Failure to do so may cause the system to operate and turn the inserted
parking brake release tool, resulting in an injury.
LS460_EE (OM50D49E)