What it is
MED9 runs Volkswagen Group petrol engines of the mid 2000s. OpenRemap’s examples are the Audi A3 1.6 FSI and 2.0 TFSI (engine codes AXX, BWA, BYD and CAWB), the VW Golf V GTI 2.0 TFSI and the Audi TTS 2.0 TFSI (OpenRemap).
What a file from it looks like
A whole MED9 read is between 512 KB and 2 MB (OpenRemap). MED9 shares a piece of loader code, the RamLoader, with Bosch’s ME9, so the two can look alike. A MED9 marker in the file tells them apart (OpenRemap).
What the numbers look like
The software number is ten digits starting with 1037, and the hardware number is stored in the file (OpenRemap). Bosch petrol hardware numbers start with 0 261 (Autotuner). Volkswagen Group files can carry the carmaker’s part number as well. How to read one is in ECU part numbers.
What EcuInside reads from it
The family and variant, the software number, the hardware number, the carmaker’s part number when the file has it, and the size check.
Full read or partial?
Between 512 KB and 2 MB is a whole read. A smaller file is called partial, and the result says so.
Have a Bosch MED9 read? Drop it on EcuInside and see its variant, its numbers with the bytes they came from, and whether it’s a whole read. Free, and the file isn’t kept.
Sources
- OpenRemap documentation, manufacturers and families, and its family table in OpenRemap 0.9.0 (checked Nov 7 2026)
- Autotuner, “ECU manufacturers and their evolution” (Jun 30 2025)
- Autotuner, “A lexical guide” (Jun 20 2025)
Read next
Updated November 8, 2026.