Massey Ferguson 13.X.47 – HITCH: Park Brake Switch Not Closing When Park Brake Disengaged Dyna 6 (HITCH)

When the operator disengages the parking brake or ParkLock, the electronic control system expects the park brake switch circuit to close. If the circuit remains open, the system flags this code, indicating a failure in the switch itself, a wiring break, or a mechanical misalignment preventing the switch from being actuated.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 5600 series
• 6400 series
• 6700 S series
• 7600 series
• 7700 series
• 5612
• 6700 S
• 7614-7626
• 7714-7726

1. 1

   Verify the physical operation of the handbrake lever or ParkLock actuating handle, ensuring it fully disengages and no debris is blocking the mechanism

2. 2

   Perform an electrical continuity test on the park brake switch using a multimeter (should show continuity/closed circuit when disengaged)

3. 3

   Inspect the wiring harness and connectors between the switch and the HITCH module for chafed wires, loose pins, or corrosion

4. 4

   Check the Dyna-6 ParkLock hydraulic system pressure sensors and solenoids for secondary faults

1. 1

   Secure the Machine

   Park the tractor on a level surface. Turn off the engine, remove the key, and securely chock the wheels, as you will be disabling the parking brake system during the repair.

2. 2

   Locate the Switch

   Access the park brake switch. Depending on the exact cab configuration, this is located at the base of the handbrake lever assembly or the ParkLock actuating handle inside the cab.

3. 3

   Disconnect Wiring

   Carefully unplug the electrical connector from the faulty park brake switch.

4. 4

   Remove the Switch

   Unscrew or unclip the switch from its mounting bracket.

5. 5

   Install the New Part

   Fit the replacement switch into the bracket. Ensure it is properly aligned so that the lever mechanism correctly actuates the switch plunger when the brake is engaged and disengaged.

6. 6

   Reassemble and Test

   Reconnect the electrical harness. Turn on the tractor's ignition, clear the stored fault codes from the system, and cycle the park brake several times to ensure the dashboard warning lights operate correctly and the code does not return.