Mercedes-Benz A-Class 2021 Operator's Manual page 69

Activating/deactivating the acoustic locking
verification signal
Multimedia system:
© Settings Vehicle
4 5 5
Activate or deactivate Acoustic
#
Activating/deactivating the panic alarm
Requirements:
The ignition is switched off.
R
To activate: press button 1 for approx‐
#
imately one second.
A visual and audible alarm is triggered.
To deactivate: briefly press button
#
or
Press the start/stop button on the cockpit,
#
with the SmartKey inside the vehicle.
Lock.
Changing the unlocking settings
Possible unlocking functions of the SmartKey:
Central unlocking
R
Unlocking the driver's door and fuel filler flap
R
To switch between settings: press the
#
Ü and ß buttons simultaneously for
approximately six seconds until the indicator
lamp flashes twice.
Options if the unlocking function for the driver's
door and fuel filler flap has been selected:
To unlock the vehicle centrally: press the
R
Ü button twice.
Vehicles with KEYLESS-GO: if you touch
R
the inner surface of the door handle on the
driver's door, only the driver's door and fuel
filler flap are unlocked.
1 again. Deactivating the SmartKey functions
If you do not use the vehicle or a SmartKey for
an extended period of time, you can reduce the
energy consumption of the respective SmartKey.
To do so, deactivate the SmartKey functions.
To deactivate: press the ß button on the
#
SmartKey twice in quick succession.
The SmartKey indicator lamp flashes twice
briefly and lights up once.
To activate: press any button on the Smart‐
#
Key.
%
When the vehicle is started with the Smart‐
Key in the storage compartment of the cen‐
ter console, the SmartKey functions are
automatically activated (
Opening and closing 67
page 127).
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