Fendt 00.1.72 – 0000 - Overall system/tractor: A036 - Control panel, dashboard right/left. ESC button. Button non-operable.

The "Esc" (Escape) key on the tractor's control console is not functioning. The system is not detecting any input from this specific switch, which usually points to a failed membrane keypad contact, an internal board failure within the control panel, or an open circuit in the wiring.

• 309 Vario COM III
• 310 Vario COM III
• 311 Vario COM III
• 312 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt 400 Vario
• Fendt 700 Vario
• Fendt 800 Vario
• Fendt 900 Vario series (922, 924, 927, 930, 933, 936, 939)

1. 1

   Attempt to press the Esc button firmly to see if it registers intermittently. If it feels collapsed or lacks tactile feedback, the membrane is likely physically damaged.

2. 2

   Inspect the wiring harness and connectors running between the A036 Control panel and the A007 Instrument cluster for chafing, pinched wires, or loose pins.

3. 3

   Verify that the control panel is receiving proper supply voltage (typically 8.5V or 12V depending on the specific pinout for your model's A036 module).

1. 1

   Disconnect Power

   Turn off the tractor and disconnect the battery to protect the sensitive CAN bus and instrument cluster electronics.

2. 2

   Access the Console

   Remove the interior trim pieces surrounding the right/left dashboard control console (A036) to expose the mounting hardware.

3. 3

   Remove the Control Panel

   Unscrew the control panel and carefully pull it forward.

4. 4

   Disconnect Harness

   Unplug the multi-pin electrical connectors from the back of the A036 board. Inspect the connector for any green corrosion or pushed-out pins.

5. 5

   Component Replacement/Repair

   Because the Esc button is integrated into a membrane keypad, you must either replace the entire A036 control panel board, install an OEM button repair kit (membrane replacement), or send the unit to an agricultural electronics specialist for a board-level repair.

6. 6

   Reinstallation

   Plug the harness into the new/repaired control panel and secure it back into the dashboard.

7. 7

   Clear Fault Codes

   Reconnect the battery and turn the ignition on. To clear the stored fault codes in the A007 Instrument panel memory, press buttons A, B, and C simultaneously on the terminal.

8. 8

   Verify Operation

   Test the Esc button to ensure the fault code does not return.