Subaru BRZ 2018 Owner's Manual page 452

5-2. Steps to take in an emergency
Interior Exterior
buzzer buzzer
Contin-
uous
(5 sec-
onds)
Contin-
uous
Once
(5 sec-
onds)
450
Warning message
(Flashes)
(Flashes)
Details
An attempt was
made to lock the
doors using the
keyless access
with push button
start system
while the access
key was still
inside the vehi-
cle.
An attempt was
made to lock
either door by
opening a door
and putting the
lock lever into the
lock position,
then closing the
door by pulling on
the outside door
handle with the
access key still
inside the vehi-
cle.
Correction
procedure
Retrieve
the access
key from
the vehicle
and lock
the doors
again.
Retrieve
the access
key from
the vehicle
and lock
the doors
again.