Bosch · petrol · 2018–2023
VW ECU 03H 907 309 xxx — Bosch MED17.1.6
Atlas 3.6 VR6 alternate numbering alongside 03H 906 026.
Models fitted with 03H 907 309
Prefix-to-application pairing checked against published parts data on 2026-10-14.
Clone the 03H 907 309 ECU — $350 flat
Mail your original and a donor with the same full part number. VIN, immobilizer data, coding and adaptations are copied across on the bench, typically within 24 hours of arrival. Factory immobilizer stays on.
Volkswagen engine ECU cloneOn-car software step — remote ODIS, $250
Some cars still want an on-car step after a module swap: a software version management (SVM) update, coding, or a basic-settings adaptation. Plug a J2534 pass-thru interface into the car and we run the factory ODIS software on it from our bench — no dealer visit. The same session covers coding after any other VW or Audi module replacement.
Book the VW / Audi remote sessionFrequently asked questions
What is VW ECU part number 03H 907 309?
03H 907 309 is the part-number prefix of a Volkswagen engine control unit in the Bosch MED17.1.6 family (Bosch), common on 2018–2023 petrol cars. Atlas 3.6 VR6 alternate numbering alongside 03H 906 026. The rest of the number selects the exact calibration.
Which models use a 03H 907 309 ECU?
In the US: Atlas / Atlas Cross Sport MQB (Chattanooga) (2018–2026). Always confirm with the label — the same model year can carry a different family on another engine or build.
Can you clone a 03H 907 309 ECU?
Yes. Mail your original 03H 907 309 unit and a donor with the same full part number and we copy your VIN, immobilizer data, coding and adaptations onto the donor for $350 flat, typically within 24 hours of arrival, immobilizer intact. If the car then asks for an on-car step, the remote ODIS session over J2534 is $250.