The C051D54 module is constructed on a compact, 6-layer Printed Circuit Board (PCB) utilizing a 28nm automotive-grade MCU core. The hardware is divided into three primary isolation domains:

: On some older or specific models, this can be done by jumping the CG and TS terminals on the OBDII port with paper clips and following a specific sequence of ignition cycles and terminal touches.

The C051D54 employs a closed-loop thermal monitoring system. It utilizes an array of Negative Temperature Coefficient (NTC) thermistors placed strategically across the battery pack.