FENDT varioguide Operator's Manual page 57

Turn steering wheel against the right steering lock
and hold.
Confirm with RETURN.
Release hand brake and drive the tractor forwards
slowly, keeping the wheels straight.
NOTE:
This calibration is an important requirement for
ensuring correct way-line guidance.
Confirm with RETURN.
If calibration is completed without errors, O.K.
appears and the new sensor settings are saved.
NOTE:
Settings are only stored when ignition key has
been turned to "0" position.
Wait for at least 30 seconds before switching on
ignition again!
If incorrect values are detected or the conditions
are not met, the message ERROR appears.
2401 = calibration code
FXX = fault code
VarioGuide
438.020.070.012
6. VarioGuide components and calibrations
Fig. 7
Fig. 8
Fig. 9
Fig. 10
57