Garmin G1000 Reference Manual page 66

Hazard Avoidance
Enable TAWS
While the TAWS-B Page is displayed, select the INHIBIT Softkey.
Or:
1) While the TAWS-B Page is displayed, press the MENU Key.
2) Turn the small FMS Knob to select 'Enable TAWS'.
3) Press the ENT Key.
NOTE: If TAWS alerts are inhibited when the Final Approach Fix is the active
waypoint in a GPS SBAS approach, a LOW ALT annunciation may appear on
the PFD next to the altimeter if the current aircraft altitude is at least 164
feet below the prescribed altitude at the Final Approach Fix.
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Garmin G1000 Cockpit Reference Guide for the Hawker Beechcraft C90A/GT/GTi
190-00664-02 Rev. B