Module Families (FIDs)

SIM2K-25x Series (TC1782)

These ECUs use the Infineon Tricore TC1782 MCU with 2.5 MB of internal flash memory.

• FID 152 (CAN): Supports Full OBD mode via the diagnostic connector or on the bench. It allows FullFlash reading and writing of both calibrations and the software area.

• FID 150 (BSL): Boot Strap Loader mode for deep recovery or full backups. This requires opening the ECU and allows FullFlash reading and calibration writing.

SIM2K-26x Series (TC1791)

These higher-capacity ECUs use the Infineon Tricore TC1791 MCU with 4 MB of internal flash memory.

• FID 252 (CAN): Supports Full OBD mode (bench or diagnostic port). Allows FullFlash reading and writing of calibration and software areas.

• FID 151 (BSL): Requires opening the ECU. Supports FullFlash reading and calibration writing in BSL mode.

Technical Highlights

• No Unlock Required: For CAN families (152/252), there is no need to open the ECU to perform an unlock; the software handles this through the OBD protocol.

• Correction: Automatic Checksum and CVN (Calibration Verification Number) correction is performed during the writing process to ensure the ECU remains original in the eyes of dealership scanners.

• Hardware Requirements:

  • Adapter: A special BITS001 power adapter is required for stable operation.

  • Interface: While it works with Tactrix Openport 2.0 or Bosch VCM2, Scanmatik SM2/SM2 Pro is highly recommended for the most stable performance.

Important Constraints

Reflash Warning: The CAN-based FIDs (152/252) may not function correctly if the ECU has been previously modified or reflashed using third-party tools (non-BitBox). In such cases, BSL mode may be necessary to restore communication.