Page organisation in this revision
- Page type
- ECU hub
- Subject
- ECUs
- Parent
- Bosch Motronic ME9
- Applies to
- No ECU-specific applicability
- Tool groups
- None
- Manufacturers
- None
Changes from revision 4 to revision 4
Removed text is struck through; added text is highlighted.
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 context
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 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 source
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.
Rendered revisions
Open each version to inspect formatting, tables and photographs.
Revision 4: Bosch MED9
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.
Direct-injection application context
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.
Additional OEM source
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.
Revision 4: Bosch MED9
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.
Direct-injection application context
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.
Additional OEM source
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.