Massey Ferguson 08.01.A1 – Rear Hitch Module (HITCH): Rear Hitch Module Internal Issue (HITCH) / Lost Calibration

The module has lost its stored parameters for the rear linkage's high/low stops and sensor baselines, or it has suffered an internal memory/hardware failure that prevents it from retaining these values.

• 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
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Attempt a standard rear hitch calibration to see if the module can retain the parameters before assuming it is permanently dead.

2. 2

   Verify the wiring harness connections to the Rear Hitch Module, ensuring steady 12V power and a clean ground, as voltage drops can cause memory loss.

3. 3

   Ensure the rear linkage position sensors are physically intact, properly oriented, and have the correct gap to prevent the module from rejecting calibration.

1. 1

   Calibrate the Rear Linkage

   Enter the tractor's calibration mode. Follow the specific procedure for your model to define the high and low stops. This usually involves setting the draft/position potentiometers to specific values and actuating the raise/lower rocker switch to lock in the parameters.

2. 2

   Evaluate Calibration Results

   Cycle the tractor's key power. If the hitch operates normally and the 08.01.A1 code clears, the issue was simply a lost calibration.

3. 3

   Replace the Module (If Calibration Fails)

   If the module refuses to accept the calibration, or if the code returns immediately after a power cycle, the internal memory/processor has failed.

4. 4

   Install New Module

   Disconnect the tractor's battery. Locate the Rear Hitch Module, disconnect the harness, and swap in the replacement unit.

5. 5

   Final Calibration

   A brand-new module will be blank. You must perform a full rear hitch calibration procedure on the new module before the tractor will operate the linkage.