See also:

Arming the alarm
Press the Lock button on the remote key. One long flash of the turn signals will confirm that the alarm is armed. Alarm confirmation settings can be changed in MY CAR, under Car settings  - ...

Common functions: Remote key/ Personal Car Communicator (PCC)*
Personal Car Communicator (PCC)* Lock Unlock Approach lighting Trunk unlock/open Panic alarm ...

Locking or unlocking the vehicle with the key blade
Keyless drive keyhole cover The driver's door on vehicles equipped with keyless drive can be locked or unlocked with the remote key's detachable key blade if necessary, see page 59 for in ...