Open MES → → Interfaces :
Modern 2021 vehicles use high-speed CAN (500 kbps) and, increasingly, (for models like the 2021 Fiat 500 Hybrid) or D-PDU API interfaces. Older ELM327 v1.4 clones often fail on these networks due to: multiecuscan elm327 port settings 2021
: Ideally, set your adapter to COM1 or COM2 . Open MES → → Interfaces : Modern 2021