Differential Lock

RXA0141547
RXA0141547-UN-12MAY14

CommandARM™ Differential Lock Controls

RXA0141544
RXA0141544-UN-12MAY14

Corner Post Display

RXA0141548
RXA0141548-UN-12MAY14

Differential Lock Floor Switch

A - Auto Lock Switch

B - Differential Lock Switch

C - Differential Lock Indicator

D - Differential Lock Floor Switch


IMPORTANT: Engage differential lock before entering situation where wheel slippage may occur or when all wheels appear to be turning at same speed. If engaged after wheels begin to spin, damage to differential could result.

NOTE: Differential lock for front and rear axles engage at the same time.

Differential Lock latches wheel axles together to provide best traction possible for slippery field conditions.

When one wheel begins to slip, differential lock can be engaged by selecting either of the two operating positions:

Auto Lock — Enter Auto mode by pressing Auto Lock switch (A) on armrest. When in auto mode, LED in Auto lock switch illuminates. Differential lock indicator (C) illuminates when differential lock is engaged. Auto Lock:

  • Disengages when wheel speed is more than 23 km/h (14 mph), brake pedal is depressed or steering angle greater than selected value. For more information on how to change differential lock steering angle see Adjust Steering Angle to Disengage Differential Lock in this section of this Operator’s Manual.
  • Engages when wheel speed falls below 19 km/h (12 mph), steering angle less than selected value and brake is released.

NOTE: When Auto lock switch is pressed, button is always lit until pressed again. Differential lock remains in Auto mode until operator selects Manual Lock (B), Differential Lock floor switch (D) or press Auto Lock switch again. Differential Lock indicator turns on and off depending on the state of differential lock.

Manual Lock — Enter Manual mode by pressing either Manual Lock switch on armrest or Differential Lock floor switch. When in Manual mode, LED in Manual Lock switch and Differential lock indicator illuminates. Press Manual Lock switch a second time or depress brake pedal to disengage Manual mode.


CommandARM is a trademark of Deere & Company

KT81203,0000141-19-20140613