Revision 1
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Family index
Open Bosch MED9.1 for the initial reference. Keep software-specific definitions, addresses and research notes attached to that variant.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
Med9Dump. toxictuning and project contributors. Source revision 6541ae40a9dd; accessed 2026-11-10.
Direct-injection application contextThe MED9 branch covers petrol direct-injection management. Volkswagen's SSP 840293: Engine Management Systems, pages 29 and 41, distinguishes the MED9.1 applications from MED9.1.1; the suffix is part of the identification.Documented variantExamples in VW SSP 840293MED9.12.0-litre FSI Turbo and 3.6-litre VR6 FSI, page 29.MED9.1.14.2-litre four-valve V8 FSI in Touareg II, page 41.These are examples from that training document, not a complete vehicle fitment list. Keep engine, market, hardware and software distinctions with any definition or diagnostic procedure. A family or suffix match does not establish identical pressure control, sensor equipment, calibration addresses or pin assignments. Compare the separately scoped ME9 and MED17 branches.Additional OEM sourceVolkswagen SSP 840293: Engine Management Systems, February 2010, pages 29-32 and 41; OEM training document on an independent mirror, accessed 2026-11-10. This describes design and function, rather than current repair procedures.| Field | Revision 1 | Revision 4 |
|---|---|---|
| Page type | ECU hub | ECU hub |
| Subject | ECUs | ECUs |
| Parent | Bosch | Bosch Motronic ME9 |
| Applies to | No ECU-specific applicability | No ECU-specific applicability |
| Tool groups | Not recorded in this older revision | None |
| Vehicle makes | Not recorded in this older revision | None |
Open each version to inspect formatting, tables and photographs.
Open Bosch MED9.1 for the initial reference. Keep software-specific definitions, addresses and research notes attached to that variant.
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
Open Bosch MED9.1 for the initial reference. Keep software-specific definitions, addresses and research notes attached to that variant.
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
The MED9 branch covers petrol direct-injection management. Volkswagen's SSP 840293: Engine Management Systems, pages 29 and 41, distinguishes the MED9.1 applications from MED9.1.1; the suffix is part of the identification.
| Documented variant | Examples in VW SSP 840293 |
|---|---|
| MED9.1 | 2.0-litre FSI Turbo and 3.6-litre VR6 FSI, page 29. |
| MED9.1.1 | 4.2-litre four-valve V8 FSI in Touareg II, page 41. |
These are examples from that training document, not a complete vehicle fitment list. Keep engine, market, hardware and software distinctions with any definition or diagnostic procedure. A family or suffix match does not establish identical pressure control, sensor equipment, calibration addresses or pin assignments. Compare the separately scoped ME9 and MED17 branches.
Volkswagen SSP 840293: Engine Management Systems, February 2010, pages 29-32 and 41; OEM training document on an independent mirror, accessed 2026-11-10. This describes design and function, rather than current repair procedures.