The Professional's Tool for Disabling the Immobilizer on EDC17 & MED17 ECUs.
IMMOFF17 is a specialized software utility designed for one critical task: correctly disabling the factory immobilizer system within the EEPROM of Bosch EDC17 and MED17 engine control units. This tool is essential for a variety of advanced automotive procedures.
What Problem Does This Solve?
When performing an engine swap, replacing a faulty ECU with a used unit, or building a track car, the factory immobilizer system can prevent the engine from starting. The immobilizer data is stored deep within the ECU's EEPROM and requires a special patch to be correctly disabled.
IMMOFF17 automates this process. It reads your EEPROM file, applies a professional-grade "immo off" patch, corrects the necessary checksums, and ensures that no warning lights will appear on the dashboard after the procedure.
Key Features
- Professional IMMO Patch: Correctly disables the immobilizer function within the EEPROM data.
- Automatic Checksum Correction: Automatically calculates and corrects EEPROM checksums after patching, which is critical for the ECU to function correctly.
- No Dashboard Errors: The patch is designed to prevent any "immo active" or related warning lights from appearing on the instrument cluster.
- Multiple Functions: The tool can perform a full "IMMO OFF + Checksum" patch, a "Checksum Correction Only" function, or a direct "Flash IMMO OFF".
How to Use
- Read the EEPROM: First, you must read the full EEPROM data from your EDC17/MED17 ECU using a compatible bench programming tool (like KTAG, Flex, etc.).
- Load File in IMMOFF17: Open the software and load your original EEPROM file.
- Apply Patch: Select the desired function (e.g., "EEPROM * IMMO OFF + CHECKSUM CORRECTION").
- Save New File: Save the modified EEPROM file generated by the software.
- Write Back to ECU: Write the new, patched file back to your ECU using your bench programming tool.
Supported ECUs
- Bosch EDC17 (all variants)
- Bosch MED17 (all variants)
System Requirements & Testing
- Operating System: This software is Windows-based and has been tested on Windows 10 LTSC 2019.
- Required Hardware: An EEPROM programmer capable of reading/writing EDC17/MED17 ECUs is required.
Disclaimer
This software is intended for legitimate professional and educational purposes, such as engine conversions, ECU repairs, and motorsport applications on privately owned vehicles. Disabling a factory security system may have legal implications and can affect your vehicle's insurance. It is your responsibility to use this tool in compliance with your local laws. Use at your own risk.
