John Deere AUTOTRAC OMPFP11320 - Manual (Page 8)

Safety Signs
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Automatic Guidance System Detected
This message occurs during startup on vehicles with
AutoTrac installed.
The master switch removes power from the EH Valve to
prevent AutoTrac from being unintentionally activated. The
master switch is intended for use on roadways or when
the operator does not want AutoTrac able to be activated.
Ensure AutoTrac is disabled by turning the Master Switch
to the OFF position.
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Automatic Guidance
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