Autotuner and Flex 2026 New MD1 Protocols: MD1CS003, MD1CP001, MD1CS004
New-generation Bosch MD1 diesel ECUs ship locked and were long unreadable. In 2026 Autotuner and Magicmotorsport Flex opened most of them with bench, OBD and “boot glitch” methods. Below are the announced methods for the most searched MD1s together with our ECU Prime solution articles.
Read method and solutions by ECU
- MD1CS003 (1.5 BlueHDi): Autotuner March 2026: bench after unlock · Flex 8.23, September 2026: boot glitch. Solutions
- MD1CS004 H80 / MD1CS104 (2.0 TDI evo): Autotuner June 2026: bench · Flex 8.27, October 2026: boot glitch. Solutions
- MD1CP001 (Mercedes OM654 / OM656): Flex 8.17, September 2026: boot glitch · Autotuner: bench connection. Solutions
- MD1CS012 (Hyundai / Kia 1.6 CRDi): Flex 8.0: boot unlock, then bench. Solutions
- MD1CS001 / MD1CP002 (BMW B47 / B57): Autotuner June 2025: OBD read, some need a bench unlock first; not for units after 06/2020 · Flex 8.0 / 8.1: boot and bench. Solutions
- 3.0 TDI ECUs (Audi / VW / Porsche): Autotuner July 2026: bench · Flex 8.27: boot glitch. Solutions
- MD1CS005 (Ford 1.5 EcoBlue) and SID212 (2.0 EcoBlue): Flex 7.31: MD1CS005 over OBD · Autotuner March 2026: SID212 patched once on the bench, then OBD. Solutions
- MD1CS006 / MD1CS016 (1.5 Blue dCi): solutions available at ECU Prime; the read method is confirmed by ECU version. Solutions
What do the methods mean?
- OBD: read through the diagnostic socket without removing the ECU.
- Bench: the ECU is removed and read through its connector without opening the case.
- Boot / boot glitch: the case is opened and the processor’s boot mode is used to unlock; on Flex without removing components.
Tool announcements are based on the makers’ release notes; the exact ECU version (e.g. H80, TC298) is confirmed only after reading. Workshops can upload files read with these tools to the ECU Prime file service and download the solution from their panel.
The ECU type depends on model year and engine. The exact type is confirmed from the ECU label or by reading it with a diagnostic tool; send a photo of the label on WhatsApp and we will tell you which file applies.
How it works
- Reading: upload the original file read with your tool, or visit one of our locations.
- Calibration: the file is prepared for the exact engine and ECU software version, checksum corrected; the original is archived.
- Application and check: fault scan and run / road test after writing.
Workshops get the same solutions through the ECU Prime file service.
Emission-related software is offered only for uses permitted by applicable law (off-road / closed-site use, racing, export, diagnostics); road use and inspection compliance are the owner’s responsibility.