How-to: repair Porsche Cayenne / Lamborghini Urus / Audi Q8 12V lithium battery with Xhorse Multi Prog programmer. Multi-prog has built-in algorithms that can directly repair modules.
Fault code DTC P1D6C00 – 12V lithium battery diagnostic system monitoring fault.
This error appears after a critical battery discharge. After the battery is discharged, the BMS module turns on protection.
There are 2 ways to solve the problem: buy a new battery or remove protection in DFLASH.
Repairing the battery is not a difficult task, the most difficult thing is to get to the BMS board.
The battery is located at the feet of the front right passenger.
We take out the battery and take it to the table for repair.
The BMS board is under the top battery cover. The cover is glued and you will have to tinker to remove it. You need to remove the side cover and unscrew the two battery terminals, then carefully remove the top cover.
To remove protection here we use multiprog, but it can be done with another programmer.
Multi Prog pinout to Porsche 12V battery module SPC5644B-ON32E.
Steps:
1) Read and back up DFLASH data.
2) Correct the file (click Renew and Repair)
3) Write it back
4) Before connecting, be sure to charge the battery; if you do not do this, you may get the protection triggered a second time.
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