OBDSTAR has released a new BMW B48/B57/B58 ECU Read/Write Wiring Harness (ECM-003), designed to make ECU data reading, writing, and ISN reading easier and more efficient.
This new wiring harness supports BMW 2021 and later locked models, providing a reliable solution for professional technicians who need to work with newer BMW ECU systems.
OBDSTAR BMW B48/B57/B58 ECU Harness Features
The ECM-003 ECU Read/Write Wiring Harness supports:
BMW B48/B57/B58 engine ECU data read/write
ISN reading
2021 and later locked ECU models
It is compatible with the following Bosch ECU types:
BOSCH MD1CP032 TC299TP
BOSCH MG1CS024 TC298TP
BOSCH MG1CS201 TC298TP
With this dedicated wiring harness, users can perform ECU operations more conveniently without complicated wiring connections.
Supported OBDSTAR Tools
The BMW B48/B57/B58 ECU Read/Write Wiring Harness (ECM-003) works with:
OBDSTAR X300 Classic G3
OBDSTAR DC706
All ECU MASTER configurations with A
It provides a professional and efficient ECU solution for automotive locksmiths, repair technicians, and ECU specialists.

Conclusion
The new OBDSTAR BMW B48/B57/B58 ECU Read/Write Wiring Harness (ECM-003) expands OBDSTAR’s ECU programming capabilities for newer BMW vehicles. Supporting ECU data read/write and ISN reading on 2021+ locked models, this harness helps technicians complete BMW ECU-related tasks more easily and efficiently.
Stay tuned for more updates from OBDSTAR.
