If you’re working on the VW PQ26 platform (such as the Polo) BCM equipped with the MPC5646B processor using an Xhorse Multi-Prog, this pinout guide will help you establish a more reliable and stable bench connection.
Important Tip for Stable Reading:
When connecting the GND wire to the Multi-Prog, solder it as close as possible to the MCU ground plane. Keeping the ground wire short and secure helps prevent communication interruptions, checksum errors, and potential read/write failures during bench operations.
VAG (CENTRAL09) [J519] BCM PQ26 MPC5646B – XHORSE MULTI-PROG PINOUT
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