First thing to do when something wonky happens with "electronics" is to lift the hood and check accessory battery voltage. If fully charged it should be around 12.6V, but down to 12.2V shouldn't cause any problems (if that was its lowest voltage).
1) If under 12.5-12.6V, plug in a SMART trickle charger overnight - one that is OK for Absorbent Glass Mat (AGM) lead acid batteries.
2) Has the problem gone away after overnight, full 12V battery charge ?
2A) YES: keep an eye on voltage, and use trickle charger every few weeks, overnight.
2B) NO : disconnect the 12V battery for 10-15 minutes, then reconnect. (This 'reboots' the car.)
If that hasn't fixed the problem, THEN you take it to an *** EV CERTIFIED *** shop.
Some might argue to try (2B) first, as it only takes 10-15 mins. That can make sense. However, if the 12V battery is low, I find it worthwhile to see if charging the battery fixes the problem. Heck, you're asleep while it is charging - you can disconnect the battery the next morning for 15 minutes if needed.
I do stress the importance of regularly (at least once a month) slow charging your 12V battery overnight with an AGM-aware 'smart' trickle charger. My 12V battery is over 7 years old, no problems. (Oops, hope I didn't jinx it!!!.) My trickle charger only puts out .8A max, it really is only to top off the battery.
*** Glad to see your problem is fixed. I would trickle charge the 12V overnight anyways.