Did a bit of poking around, looking up errors on the dash and such. His battery seems to be past due for replacement.

The car’s system would turn on, but the error message was talking about the anti-collision braking system being offline. Trying to start it and it would barely turn over.

Looked at the battery connectors and the positive have a chunk of corrosion on it.

He lives next door to a dealership, so should be easy to replace.