I was intrigued when I was doing my research regarding various instruction regarding the airbag and the heated vest. Only Inmotion declared that the heated vest will damage the airbag. Personally? If you fly off the bike, you get disconnected from the heated vest so instant combustion in a ball of flame is unlikely from an electrical short. On Advrider there is an entire thread about it.
From Inmotion:
"Incompatible"
✖ Electronic heated vests are not compatible. The heat generated by the heated vest can damage the airbag system."
From Advrider, a user:
"been wearing my Garmin heated jacket liner under my Techair5 vest for 4 years or so. No problems ."
Helite:
"No problem" spoke to a gentleman at the company.
Motoairbag:
"No problem!