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B.1.B4

Fendt B.1.B4 – A002 - ECU, enhanced control (E-Box): A002 - ECU, enhanced control — Teach-in error - working storage function

Issue description

A memory or data storage failure within the enhanced control unit, which directly causes the tractor's 'Teach-in' (Variotronic TI) automated sequence functions to become non-operational.

Applies to these machines

  • 409 Vario
  • 410 Vario
  • 411 Vario
  • 412 Vario
  • 711 Vario
  • 712 Vario
  • 714 Vario
  • 715 Vario
  • 716 Vario
  • 717 Vario
  • 718 Vario
  • 916 Vario
  • 920 Vario
  • 924 Vario
  • 926 Vario
  • 930 Vario
  • 411 Vario COM III
  • 412 Vario COM III
  • 413 Vario COM III
  • 414 Vario COM III
  • 415 Vario COM III
  • 712 Vario COM III
  • 714 Vario COM III
  • 716 Vario COM III
  • 718 Vario COM III
  • 818 Vario COM III
  • 820 Vario COM III
  • Fendt 300 Vario (COM III)
  • Fendt 411 Vario (COM III)
  • Fendt 412 Vario (COM III)
  • Fendt 413 Vario (COM III)
  • Fendt 414 Vario (COM III)
  • Fendt 415 Vario (COM III)
  • Fendt 711 Vario (COM III)
  • Fendt 712 Vario (COM III)
  • Fendt 714 Vario (COM III)
  • Fendt 716 Vario (COM III)
  • Fendt 718 Vario (COM III)
  • Fendt 815 Vario (COM III)
  • Fendt 817 Vario (COM III)
  • Fendt 818 Vario (COM III)
  • Fendt 820 Vario (COM III)
  • Fendt 916 Vario (COM III)
  • Fendt 920 Vario (COM III)
  • Fendt 924 Vario (COM III)
  • Fendt 926 Vario (COM III)
  • Fendt 930 Vario (COM III)

Check the cause

  1. Power Cycle: Restart the tractor (switch the ignition OFF, wait, and then switch it back ON).

  2. Verify Functionality: Check if the Teach-in function is restored and if the error code clears. If the error is no longer present, it was a temporary memory glitch.

Repair steps

  1. Software Reprogramming

    Connect the FENDIAS diagnostic tool and reload the EOL (End-Of-Line) programming (also referred to as 'band edge programming') into the A002 ECU (Enhanced Control).

  2. Retest

    Cycle the ignition and test the Teach-in functions again.

  3. Hardware Replacement

    If the error re-occurs after the EOL programming has been successfully reloaded, the working storage memory within the ECU has physically failed. You must replace the A002 ECU (Enhanced Control / E-Box).

Parts you might need

(8)

  • A002 ECU, Enhanced Control / E-Box

    F006200710160

    Fits select 700 and 800 series (e.g., 711, 712, 714, 716, 815, 817). Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    G725970070014

    Fits select 400, 700, and 800 series (e.g., 411-415, 712-718, 818-820). Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    G725970070015

    Supersession of G725970070014. Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    F725970070042

    Supersession of G725970070014. Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    G701970070032

    Fits select Vario models. Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    F701.970.070.032

    Fits select Vario models. Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    F916.971.070.123

    Fits select 900 Vario series. Must be flashed/programmed with correct EOL software.

  • A002 ECU, Enhanced Control / E-Box

    G.916.971.070.110

    Fits select 900 Vario series. Must be flashed/programmed with correct EOL software.

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