Qu'est-ce que l'ECU 05C907309F et conviendra-t-il à votre 1.5 TSI ?
L'ECU Bosch 05C907309F contrôle le moteur EA211 Evo sur les modèles VW, Audi, SEAT et Škoda — voici comment l'identifier, le recouper avec des références croisées et acheter une unité d'occasion en toute sécurité.
What Is the 05C907309F ECU and Which Cars Use It?
The Bosch 05C907309F (Bosch internal code 0 261 S107 K0) is the engine control unit (ECU) developed for Volkswagen Group's EA211 Evo petrol family. It manages fuel injection, ignition timing, turbo boost, emissions systems and a host of sensor inputs on 1.0 TSI and 1.5 TSI variants.
Compatible vehicles include:
- VW Golf VIII 1.5 TSI (2020 onwards)
- VW Golf (CD) 2019–2021
- VW Tiguan 1.5 TSI
- VW Polo (AW) 2017–2021
- Audi A3 8Y 1.5 TFSI
- SEAT Leon IV 1.5 TSI
- SEAT Ibiza (KJ) 2017–2021
- Škoda Octavia IV 1.5 TSI
- Škoda Fabia (NJ) 2018–2021
You can view the listing and check current stock directly on AutoParts EU — Bosch ECU 05C907309F. For related components, browse the full Electronics category.
How to Identify It by OEM Number and Label Markings
The unit carries two numbers you should verify before purchasing:
| Label field | Number | |---|---| | VAG OEM part number | 05C 907 309 F | | Bosch supplier number | 0 261 S107 K0 |
Both numbers are printed on a white or silver sticker on the ECU housing. The VAG number format uses spaces (05C 907 309 F) but databases and invoices often drop them. Either format refers to the same unit. A suffix letter change (e.g. 05C907309E vs F) can indicate a different software revision or hardware variant — always match the full number including the final letter.
Cross-Reference Numbers
Third-party catalogues list the following equivalent reference:
- 653-01 (aftermarket cross-reference)
If you are searching in a local catalogue or online marketplace and cannot find the VAG number, searching 653-01 may surface the same unit.
What to Check Before Buying a Used ECU
Buying a used engine control unit carries specific risks that differ from mechanical parts. Work through this checklist:
- Exact OEM match — Confirm all suffix letters match your vehicle's original unit, not just the base number.
- Donor vehicle mileage and history — A unit pulled from a high-mileage vehicle that suffered engine damage may have logged fault codes affecting its calibration. Ask for the donor vehicle's mileage if available.
- Physical condition — Inspect connector pins for corrosion or bent contacts. Water ingress around the ECU housing seal is a common failure cause.
- Coding requirement — VAG ECUs require VIN coding and, on some variants, immobiliser adaptation via VCDS or ODIS. Confirm this with your mechanic before purchase so there are no surprises on labour cost.
- Return policy — Because functionality can only be confirmed after coding, choose a seller that offers a reasonable return window if the unit is found to be faulty during installation.
FAQ
Will this ECU work straight away after fitting?
No — VAG ECUs need to be coded to your vehicle's VIN and component protection must be cleared through an authorised tool (VCDS, ODIS or an independent equivalent). Plug-and-play is not possible on VAG platforms.
Can the 05C907309F be used on both 1.0 TSI and 1.5 TSI engines?
The OEM part number 05C907309F is associated with the EA211 Evo platform, which covers both displacements in principle, but always cross-check against your vehicle's original part number before ordering. Engine output variants often require different software even within the same hardware revision.
Is the Bosch supplier number 0 261 S107 K0 the same unit?
Yes. 0 261 S107 K0 is simply Bosch's own manufacturing reference for the same ECU that VAG catalogues as 05C 907 309 F. Both numbers appear on the unit's label.