Fendt 03.1.18 – A039 - MFA (Multifunction Armrest) / A100: Invalid parameters for acceleration rate

The parameters stored in the EEPROM for the accelerator pedal resolution/acceleration rate are invalid, missing, or corrupt. The tractor's system will ignore the invalid data and default to using predefined (fallback) values to maintain basic operability.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• 207 Vario
• 208 Vario
• 209 Vario
• 210 Vario
• 211 Vario
• 300 Vario Series (COM III)
• 409 Vario (COM III)
• 410 Vario (COM III)
• 411 Vario (COM III)
• 412 Vario (COM III)
• 711 Vario (COM III)
• 712 Vario (COM III)
• 714 Vario (COM III)
• 716 Vario (COM III)
• 815 Vario (COM III)
• 817 Vario (COM III)
• 818 Vario (COM III)
• 916 Vario (COM III)
• 920 Vario (COM III)
• 922 Vario (COM III)
• 924 Vario (COM III)
• 926 Vario (COM III)
• 927 Vario (COM III)
• 930 Vario (COM III)
• 933 Vario (COM III)
• 936 Vario (COM III)

1. 1

   Verify active faults on the terminal. If codes like 03.1.01 (Faulty hardware/RAM) or 03.1.02 (Incorrect EEPROM checksum) are present, the armrest's internal memory has failed and calibration will not fix the issue.

2. 2

   Check prerequisites for calibration: ensure the tractor is stationary (speed < 0.1 km/h), the transmission is in neutral, the handbrake is applied, and the ignition is ON.

3. 3

   Check CAN communication to ensure there are no active CAN bus communication errors between the A039 (MFA) and A050 (Basic Control ECU).

1. 1

   Turn ignition ON

   Turn the ignition ON. Do not start the engine unless specifically prompted by the terminal.

2. 2

   Prepare tractor for calibration

   Apply the handbrake and ensure the transmission is in neutral.

3. 3

   Access calibration menu

   Access the tractor's diagnostic/calibration menu on the terminal.

4. 4

   Enter calibration code

   Enter Calibration Code 4010 (Accelerator pedal resolution calibration).

5. 5

   Complete calibration

   Follow the on-screen prompts to complete the calibration.

6. 6

   Troubleshoot calibration failures

   If the calibration fails, the terminal will output an 'F' code: F02 (Calibrated values are invalid, often requires EOL reprogramming), F03 (A039/A100 MFA is not responding), or F08 (Calibration took too long - over 30 seconds).

7. 7

   Replace hardware if necessary

   If calibration code 4010 is successful but the fault returns after a power cycle, or if EOL (End of Line) programming fails, the A039 Multifunction Armrest hardware is defective and must be replaced.