Manual Vehicle Speed Calibration

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CommandARM™ Menu Button

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Home → Performance Monitor Settings → Calibrate Radar

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Calibrate Radar Page

A - Other Radar Check Box

B - Calibrate Box

NOTE: The Vehicle Speed Calibration (Manual) procedure is not to be used with John Deere™ Dual Beam Radar.

Automatic vehicle calibration is used with JOHN DEERE Dual Beam radar or GPS signal device. See VEHICLE SPEED CALIBRATION (AUTOMATIC) in this Section.

On tractors equipped with no radar or single beam radar, a change in tire size or loading of tractor can affect wheel and ground speed which requires recalibration.

This procedure will compute tire rolling circumference value and radar proportion constant for the wheel and ground speed displays.

1. On a hard level dry surface, mark out a 400 ft. (122 m.) course. Place easily visible markers at the start and end of the course.

2. Drive tractor up to, but do not cross, course start line.

3. Select Menu button.

4. Select Home.

5. Select performance Monitor softkey.

6. Select Calibration softkey.

7. Select “Other RADAR” which will automatically place check in check box (A).

8. Select calibration Box (B) and begin down course.

9. Calibration results will display.

   Calibration Results
   If Calibration is Successful		If Calibration is Unsuccessful
   Calibration Successful		Calibration Unsuccessful

10. If failed message is received, perform procedure again.

    NOTE: If after three attempts vehicle speed calibration is unsuccessful, see your John Deere dealer.