Bosch EDC17 ECU: file sizes, numbers, variants

What it is

EDC17 is Bosch’s diesel engine computer family from 2008 on, and its petrol relatives MED17, ME17 and MEDC17 are grouped with it (OpenRemap). You find it in the Volkswagen Group’s 2.0 TDI common-rail engines and in BMW, Mercedes and Peugeot-Citroën diesels from 2008 (OpenRemap). The variant is written after the family name, as in EDC17C46 or EDC17CP44, and the exact variant decides which tool and method can read the unit (Autotuner).

What a file from it looks like

A whole EDC17 read is between 2 MB and 8 MB, depending on the variant (OpenRemap). A smaller file is probably only part of the memory, usually the calibration area. That’s enough for most tuning work, but it isn’t the whole program (Autotuner). Reads come as raw .bin files, or as .hex and .s19 from some tools.

What the numbers look like

Software numbers start with 1037 and are often stored in a longer string with letters at the end, like 1037541778126241V0. The software number is its first ten digits (OpenRemap). EDC17 files can also hold a dataset number, a production serial that starts with a date, and a base software version such as SB_V18.00.02/1793 (OpenRemap).

The Bosch hardware number, 0 281 on diesels, isn’t stored in the file as text (OpenRemap). It comes from the label or from the tool that read the unit. Files from Volkswagen Group cars can also carry the carmaker’s part number, like 03L 906 0xx.

What EcuInside reads from it

The family and variant, the software number and the longer software string, the carmaker’s part number, dataset and base software when the file has them, and the size check. In our own tests, a read missing its ident block could still be named from the variant string. We show that as a guess and say why.

Full read or partial?

Between 2 MB and 8 MB is a whole read. Anything smaller we call a partial read. Being named says nothing about completeness here: in our tests a 512 KB slice of an EDC17 file was still named correctly. The size is what tells you.

Have a Bosch EDC17 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.

Check a file

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)