Original file
Seat 1.9 TDI original file Bosch · 03G906021AN · SW 389865
Seat 1.9 TDI 66.2 kW (90 HP)2008, 66.2 kW (90 hp)
Calibrated ECU file for 03G906021AN (SW 389865). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show hardware 03G906021AN and software 389865.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Factory.
Hardware
- Factory hardware: no modifications required
Software / calibration
- OEM calibration restored (recovery / immobiliser / coding work)
Original files are used to revert to factory state, repair after a faulty tune, or recover an ECU before service work.
Product details
This product contains a complete original ECU backup (stock file) for Seat 1.9 TDI 2008 66.2KW with Bosch 03G906021AN (Bosch software number 389865 ( 1037389865 )). This original file corresponds to a factory engine output of approximately 66.2 kW (~90 HP). This file is ideal for ECU cloning, restoring the car back to stock and using it as a safe base for future remaps.
All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number such as 03G906021AN, 389865 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
D2E62796 4F3ED8FC 88AF64CC 3D37513E 257DBA27 497CDCB6 5433F919 EED64761Frequently asked questions
How do I flash this file?
Use your preferred tuning tool (KESS, KTAG, AutoTuner, CMD, etc.) to write the file to the ECU via OBD, bench, or boot mode.
Is the checksum corrected?
Yes. Every file we sell has verified checksums — ready to flash without additional correction tools.
What if I need a revision?
Contact us via WhatsApp or the support dashboard. Revisions for the same stage are free.