Look into your control center.
I have the cold weather package with the heated seats and steering wheel. While I work abroad and have hardly driven my new RubiJLU, when I was home last week, I fiddled with the control center and believe I found that you can auto-set the steering wheel and seats to come on with your remote start, if you have one. If you don't have the remote start, there could be something else going on.
Check into the control center on your display and see if that helps. Not sure what screen you have. Mine is the larger 8.3" screen with all the bells and whistles and, I found there is a ton of great control features there. Could have sworn you could set the steering wheel and seat heaters to auto-on or, off. But, can't remember, too busy having to get back to work. I'd actually like to know for sure, myself.
Best regards,
- T Denham