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I also think it's an electrical problem with one of the control units.
Your wife can only try to reset the controllers by disconnecting the battery clamp for about 5 minutes and then reconnecting.
If it is a software error, it should be fixed after reconnecting the battery.
If not, there is nothing left for your wife to do but to disconnect the battery at work and then go to a garage after work.
The problem is, if disconnecting the battery doesn't help, you can exclude the software. The problem then lies in the hardware. The possibilities are so varied that you can't say anything without reading the fault memory.
I would be very happy about a rating with 5 stars over the star bar at the top of the page, without this rating the site operator does not pay us experts.