Toyota 2006 Tundra Owner's Manual page 336

Zone numbers
'06 TUNDRA_U (L/O 0508)
Samoa: 5 Guam: 8 Saipan:
After calibration, leaving the system for
8
several seconds returns to the compass
mode.
CAUTION
Do not adjust the display while the
vehicle is moving. Be sure to adjust
the display only when the vehicle is
stopped.
2006 TUNDRA from Oct. '06 Prod. (OM34458U)
325