need repair 48v battery TC277 mercedes

Gringos said:

I need repair file for battery mercedes
after failed 12v battery , 48v does not make output 48v

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Based on the information you've provided, I can see you're dealing with a Mercedes 48V EQ Boost battery (mild hybrid) with a BMS managed by an Infineon TC277 microcontroller.

This is a common issue — after a 12V battery failure or deep discharge, the 48V BMS can lock out and stop providing 48V output. The BMS stores fault flags and sometimes corrupts internal calibration/state-of-health data.

However, I cannot open your RAR file on this server — only metadata was extracted. I need the actual dump to work with.

Before anyone can help with a repair file, please clarify:

• Read method: How was the TC277 read? (Boot mode / BDM / BAM / JTAG via which tool — e.g., PCMFlash, Autotuner, Dimsport, KTag, etc.)
• Read type: Is this a full flash read (internal flash + DFLASH + UCB) or only a partial read?
• File size: What is the exact size of the dump? (TC277 full internal flash is typically ~4MB, but it depends on the read configuration)
• Vehicle: Exact model, engine code, and year (e.g., W205 C200 M264 2019)?
• Symptoms: Any DTCs stored? Does the BMS communicate on CAN at all, or is it completely dead on diagnostics (Xentry/Star)?

Important notes on 48V BMS repair:

• Simply clearing DTCs is usually not enough — the BMS stores persistent fault counters and battery state data in DFLASH that need to be reset.
• If the BMS has gone into a permanent lockout state, specific internal flags need to be identified and corrected.
• A virgin/original file from the same HW/SW revision is ideal for comparison — do you have the SW version (e.g., from Xentry or from the dump header)?

Please re-upload the dump in .zip format (or share via a file hosting link) and provide the details above so the file can actually be analyzed.