Audi A5 Owner's Manual page 48

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46 Doors and windows
Note
Please note the following points if the vehicle is left parked for long
periods:
To save electrical power, the proximity sensors are switched off
after a few days. You will then need to pull the door handle once to
unlock the vehicle, and a second time to open it.
To prevent the battery from becoming discharged and thus
maintain the vehicle's starting ability for as long as possible, the
power management system will gradually switch off convenience
functions that are not required. In this case you may not be able to
unlock the vehicle with this convenience function.
Locking and unlocking the vehicle using the
key
If the central locking system should fail to work, you can
still lock and unlock the driver's door by turning the emer-
gency key or spare key in the lock.
Unlocking
A
– Turn the key to position
A
vehicle.
Locking
– Turn the key once to position
– If you turn the key to position
In order to switch off the anti-theft alarm*, you must switch on the
ignition within 15 seconds after opening the driver's door. Other-
wise the alarm will be triggered.
Do not leave anyone (especially children) in the car if it is locked
from the outside and the deadlock mechanism is activated: the
doors and windows cannot then be opened from the inside.
Locked doors could delay assistance in an emergency, potentially
putting lives at risk.

system is operational, it is only possible to unlock all the doors and
the boot lid centrally with the key within the next 45 seconds. After
this period, the key will only unlock the driver's door.
Fig. 38 Lock on
driver's door
⇒ fig. 38 to unlock the
A ⇒
B
A
a second time within 2
B
seconds, this will lock the vehicle without activating the
deadlock mechanism.
WARNING
Note
The central locking switch and the release button for the boot lid
will function after the ignition is switched on.
If the vehicle is locked with the key when the central locking
to lock the vehicle.