Question:
Is it possible to read and write this CRD3P.G0 ecu of a MB Sprinter 314 2021 with pcmtuner?
Solution:
Module 53 works good (BSL mode).
Check module 53 instructions
http://www.pcmtuner.org/pcmtuner-module-53-infineon-tricore-bsl-operation/
But be careful it does not correct checksum you must do it manually otherwise the vehicle starts and stops but it can be done.