Subaru BRZ 2018 Owner's Manual page 336

3-5. Other interior features
Calibrating the compass
■
To adjust for compass zone variance
Find your current location and zone number on the map.
STEP 1
Press and hold the
STEP 2
until a zone number appears in the display.
Once the zone number appears in the display, toggle the
STEP 3
switch again until your current location zone number appears.
After you stop pressing the switch, your new zone number will
be saved. Within a few seconds, the display will show a com-
pass direction.
If the vehicle's magnetics have changed or if the compass
STEP 4
appears inaccurate, recalibrate the compass. Press and hold
the
in the display. Once a "C" appears in the display, slowly drive
the vehicle in circles until compass is calibrated.
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switch for more than 9 seconds or until a "C" appears
switch for more than 6 seconds or