Subaru BRZ 2018 Owner's Manual page 236

2-3. Operating the lights and windshield wipers
Turning on the high beam headlights
234
With the headlights on, push
the lever forward to turn on the
high beams.
The high beam indicator will illu-
minate when the high beams are
turned on.
Pull the lever back to the center
position to turn the high beams
off.
Pull the lever toward you and
release it to flash the high
beams once.
The high beam indicator will illu-
minate when the high beams are
flashed.
You can flash the high beams
with the headlights on or off.