BMW F 800 GS Rider's Manual page 53

NOTICE
The "hailing system" function is
not available unless the marker
light has been activated.
Press switch 1 to select the
type of hailing-system signal,
for example day and night sig-
nal or city and countryside sig-
nal.
NOTICE
Different countries use different
hailing-system signals, so the
signal can vary.
NOTICE
There is a choice of tone se-
quences and siren sounds for
different countries. The program-
ming unit and the replacement
parts are available from your au-
thorised BMW Motorrad dealer.
Operate siren
Press top section of switch 1
to activate the siren in yelp
mode.
Press bottom section of
switch 1 to activate the siren in
wail mode.
When the siren is active, press
the horn button 2 to toggle
from one siren operating mode
to the next.
Centre the switch 1 to switch
the siren off.
Press top section of switch 2
to set the siren to "hold &
peak" for activation when the
horn button 1 is pressed.
Press bottom section of
switch 2 to set the siren to
"airhorn" for activation when
horn button 1 is pressed.
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