NO, SQ1 simply passers through all the required power / signal to the T6.1 MFSW buttons. You can't talk to the gateway itself.So to confirm, with the 5Q1, everything works ok, but it wont show the 'heated steering wheel on' symbol on the display?
I suspect the 5Q1 talks to the car CAN via the other J519 LIN bus, but the T6.1 doesn't have this connection, and i'm not sure the T6.1 module supports it.