The vehicle can be locked and unlocked via the central locking system. You can use the following (depending on the equipment on your vehicle):
Unlocking one side of the vehicle only
When you lock the vehicle, the central locking system will lock the doors and the boot lid. When you unlock the vehicle, the central locking system will unlock either the driver's door only, or all the locks on the vehicle, depending on the setting you have selected in the MMI*
►Link.
Automatic locking function (Auto Lock)
The Auto Lock function locks the doors and the boot lid when the vehicle exceeds a speed of about 15 km/h.
The vehicle is unlocked again when the ignition key is removed. Alternatively, the vehicle can also be unlocked via the central locking switch or by pulling one of the inside door handles. The Auto Lock function can be switched on and off on the sound system or MMI*
►Link.
In the event of an accident in which the airbags inflate, the doors will be automatically unlocked to facilitate access and assistance.
Safelock mechanism1)
When you switch off the ignition, the message Be aware of door safelock. See owner's manual appears in the instrument cluster display as a reminder that the safelock mechanism is automatically activated when you lock the vehicle from the outside. The doors can then no longer be opened from the inside. This makes it more difficult to break into the vehicle WARNING!.
It is possible to deactivate the safelock mechanism manually any time you lock the vehicle:
- Turn the key in the door lock to the lock position a second time within 2 seconds. Or:
- Press the
button on the remote control key a second time within 2 seconds. Or: - Touch the sensor* on one of the front door handles a second time within 2 seconds (applies to vehicles with convenience key). Or:
- Before locking the vehicle, press the
button for the interior monitor and tow-away protection*
►Link.
The LED on the top of the driver's door trim acknowledges this procedure as follows: first it flashes rapidly for a short time, then it goes out for about 30 seconds, and finally it starts flashing again slowly.
If you switch off the safelock mechanism*, the interior monitor and tow-away protection* are automatically disabled.
Anti-theft alarm system*
If the anti-theft alarm system senses interference with the vehicle it triggers an audible and visible alarm.
The anti-theft alarm system is automatically switched on when the vehicle is locked. It switches off automatically if you unlock the vehicle using the remote control or the sensor on the door handle (convenience key).
If you unlock the vehicle by inserting the key in the driver's door, you should switch on the ignition within 15 seconds to prevent the alarm from being triggered. On some export versions, the alarm is triggered immediately when you open a door.
To deactivate the alarm, press the 
button on the remote control key/convenience key or switch on the ignition. The alarm also stops automatically after a certain period.
button on the remote control key/convenience key or switch on the ignition. The alarm also stops automatically after a certain period.Switch off the interior monitor and tow-away protection if you wish to prevent the alarm from being triggered accidentally
►Link.
Turn signals
The turn signals will flash twice when the vehicle is unlocked and once when the vehicle is locked.
If the turn signals do not flash, one of the doors, the bonnet or the boot lid is still open. On vehicles with the convenience key, the ignition may still be switched on.
Accidental lock-out
The central locking system prevents you from being locked out of the vehicle in the following situations:
- When the driver's door is open, the vehicle will not be locked if you press the central locking switch and then close the door ►Link.
- On vehicles with convenience key*, the boot lid will be released again automatically if the key that was last in use is left inside the boot when the boot lid is closed.
To prevent yourself from being locked out, do not lock the vehicle with the remote control key/convenience key* until all of the doors and the boot lid are closed.
Do not leave anyone (especially children) in the car if it is locked from the outside and the safelock 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.
Note
- Never leave any valuable items in the vehicle unattended. Even a locked vehicle is not a safe.
- If the LED on the driver's window sill lights up for about 30 seconds when the vehicle is locked, the central locking system or anti-theft alarm* is not working properly. You should have the malfunction repaired by an Audi dealer or qualified workshop.
- The interior monitor of the anti-theft alarm* system will only function as intended if the windows and the sun roof* are closed.
1) This function is not available on all export versions/equipment versions.