You might get hacked but it's more likely windows or your updated app might add new bugs or ads or some shit. Quality on updates is often terrible.
Probably not the greatest move but users are generally punished when they update software more often than gain anything (usually just the promise of marginally more secure software) so they are implicitly encouraged to avoid updates.
Would be awesome if software was secure on purchase and not sold as a subscription service.
The key fob remote start would be fine and for free. Or you could use local wifi instead of the open internet which is a security risk. This is anti consumer bullshit made to get a subscription where one is not required.