Garmin Socata TBM850 Pilot's Manual page 359

HAZARD AVOIDANCE
Figure 6-54 Select Register With GFDS
5) Turn the large FMS Knob to select 'Register With GFDS' in the menu list.
6) Press the ENT Key. The Garmin Flight Data Service Registration window is displayed as shown in Figure 6-55.
Figure 6-55 Enter Access Code
190-00709-04 Rev. A Garmin G1000 Pilot's Guide for the Socata TBM 850 345