Case IH 2381 – Electronic Park Lock (EPL) controller or Transmission Control Module (TCM): Parklock discs to be replaced

The Electronic Park Lock (EPL) system has detected that the internal friction discs have worn beyond their acceptable tolerance limits. Because the discs are too thin, the park lock mechanism can no longer safely hold the vehicle or reach its desired engagement position without slipping.

• Puma/Mid Range Magnum
• Puma 140
• Puma 150
• Puma 160
• Puma 165
• Puma 175
• Puma 180
• Puma 185
• Puma 195
• Puma 200
• Puma 210
• Puma 220
• Puma 225
• Puma 240
• Puma 260
• Magnum 180
• Magnum 210
• Magnum 255
• Magnum 285
• Magnum 290
• Magnum 380

1. 1

   Check for related codes such as 2380, 2382, or 2383/2384 which may indicate other EPL system issues

2. 2

   Check battery voltage to ensure batteries are fully charged, as low voltage during startup can trigger false parklock faults

3. 3

   Attempt an EPL calibration using the diagnostic menu or Electronic Service Tool (EST) to see if the code temporarily clears

4. 4

   If stranded, use the EST software to temporarily disable the EPL in the configurations menu for an emergency move (use manual handbrake)

1. 1

   Access the Park Lock

   Drain the necessary transmission fluid and remove the transmission park lock cover/housing.

2. 2

   Disassemble the Pack

   Remove the thrust washer, piston, and the worn pack of steel intermediate plates and friction discs.

3. 3

   Prep the New Parts

   CRITICAL: If you are using new friction discs, they must be soaked in clean engine/transmission oil for at least 30 minutes prior to installation.

4. 4

   Reassembly

   Layer the new steel discs and the soaked friction discs alternately into the housing.

5. 5

   Seals and Piston

   Insert a new ring seal into the ring groove of the piston. Fit the piston, ensuring the flat side is oriented correctly, followed by the thrust washer.

6. 6

   Reinstall Housing

   Bolt the park lock cover back onto the transmission and reconnect all hydraulic lines and EPL electrical connectors.

7. 7

   Mandatory Calibration

   Once reassembled and refilled with fluid, you must perform an Electronic Park Lock (EPL) calibration using the EST or the tractor's A-post diagnostic monitor. This teaches the EPL controller the thickness of the new disc pack so it applies the correct engagement pressure.