Fendt 0B.1.41 – A050 - ECU, basic control unit: A050 - ECU, basic control unit TEACH-IN

Internal communication saving or read-out error. This means the control unit is experiencing an internal memory or data transfer failure specifically related to saving or reading data for the 'Teach-In' function (Fendt's Headland Management System).

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt 400 Vario (COM III)
• Fendt 700 Vario (COM III and SCR models)
• Fendt 800 Vario (COM III and SCR models)
• Fendt 900 Vario (COM III and SCR models)
• Fendt 922
• Fendt 924
• Fendt 927
• Fendt 930
• Fendt 933
• Fendt 936

1. 1

   Verify if the Teach-In (Headland Management) functionality is restricted or non-operational

2. 2

   Check for accompanying A050 communication faults (e.g., 0B.1.42 or 0B.1.43) which indicate memory/read-out errors between the A050 basic control unit and the Terminal or Multifunction Armrest

3. 3

   Attempt to delete the sequence data and reprogram the Teach-In sequence to see if the memory error is a temporary software glitch or a hard internal EEPROM failure

1. 1

   Connect Diagnostic Tool

   Connect the tractor to the FENDIAS diagnostic software.

2. 2

   EOL Programming

   A dealer technician must re-flash or reprogram the A050 basic control unit.

3. 3

   Module Repair/Replacement

   If EOL programming fails to resolve the issue, the A050 basic control unit has suffered a physical hardware failure (EEPROM/memory fault).

4. 4

   Removal

   Disconnect the battery, remove the cab trim panels to access the central electrical area, and extract the A050 basic control unit.

5. 5

   Resolution

   Send the A050 unit to a specialized agricultural electronics repair service (such as Ilgenfritz Mechatronics) or install a replacement unit.

6. 6

   Calibration

   If a new or repaired A050 module is installed, it must undergo EOL programming and be paired with the tractor's immobilizer (A077) and engine control unit (A051) to function.