Pacifica 2017 Hybrid : "ACC/FCW Unavailable Service Required" in dashboard

### Describe the bug

Last evening, during a drive 918f274474111392|2023-03-06--19-29-07--11, at around 19h41 I think, the car started complaining about "ACC/FCW Unavailable Service Required" on its dashboard.
The comma (running openpilot level branch) also complained that something was wrong and that I should restart the car to engage.
So at the next red light, I stopped the car for a few seconds and restarted it. This is where this drive ends, and the next one starts: 918f274474111392|2023-03-06--19-41-55.
At this point, the comma showed an unrecognized car (in useradmin.comma.ai, platform = mock for this drive).
When I arrived home, I stopped the car (plugged it in) and tried again. Same thing. This was around 19h51.
More than 20 mins later, I tried again to start the car. The warnings are now gone. 918f274474111392|2023-03-06--20-16-30

I'm worried that the comma's panda was somehow responsible for the car's FCW system being disabled...
Is there anything I could try to debug this further?

### Which car does this affect?

Chrysler Pacifica 2017 Hybrid

### Provide a route where the issue occurs

918f274474111392|2023-03-06--19-29-07--11

### openpilot version

0.9.1

### Additional info

I installed my new comma three a few days ago.
Everything went right during installation, apart from the comma showing "no panda connected" during installation; I unplugged the panda, re-connected it, and it was fine after that.
I drove for a few days, some highway, some city driving. Everything was fine.

Start by reviewing the referenced drives 918f274474111392|2023-03-06--19-29-07--11, 19-41-55, and 20-16-30 alongside openpilot 0.9.1 and the reported panda connection state. The issue does not name a file, test, or code entry point; progress would require determining whether the panda or vehicle identification caused the FCW warning and documenting a reproducible resolution.

Written by the indexing model from the issue text.