I'd have the car checked out, and don't discount the battery based on its age. The messages are pointing to where there is a problem. Until you pull all the fault codes and test the system, you won't know what the real problem is. Bad power can manifest all sorts of related faults.
As a point of reference, I had a 4 month old battery fail hard (<3V). Wouldn't even power the overhead light.
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2023 Z4 ///M40i Thundernight Metallic/Cognac Vernasca/Moonlight/Shadowline/19" Black 799M/PP/DAP/ACC/HK
2022 X5 xDrive40i Phytonic Blue/Cognac Vernasca/DAPP/LSP/PP/CCP/PAP/20" Style 738/Spare Tire/Trailer Hitch
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