The car has basically been sitting for 4 to 5 years. I’m sure that it’s something minor.
Error codes seem to have a strong relation to a weak battery. If this car sat that long this could be a likely cause. Have them check and replace the battery. I do not know if the Li battery could also be in need of replacement. Hopefully they will figure it out quickly and you'll be enjoying your car sooner than later.
Was it a new car with low miles???
I don't think the car sat, so I'm going to assume it was a used purchase.
The problem does sound consistent with a weak battery, but "fuel system problem" doesn't seem consistent with the problems that people like myself and others have had with a weak battery. However, this does bring up more concern for how the car is so dependent on the 12v system.
Correct. It was a used purchase.
Next time you converse with your dealer ask them what the "In Service Date" is. This is when the original warranty began. You might be surprised. The car could have sat with a dealer for sometime before finally being sold for the first time. So there still may be some remaining warranty on the car. My 2017 sat for 1 1/4 years before being sold so my warranty is still good until May 2022. Having said that there has been reported that Acura will offer an extended warranty. So there is hope if having a warranty is important. I know you will enjoy your car.Correct. It was a used purchase.
...Your Acura dealer will surely be able to tell when it was first purchased and put into service...
Next time you converse with your dealer ask them what the "In Service Date" is. This is when the original warranty began. You might be surprised. The car could have sat with a dealer for sometime before finally being sold for the first time. So there still may be some remaining warranty on the car. My 2017 sat for 1 1/4 years before being sold so my warranty is still good until May 2022. Having said that there has been reported that Acura will offer an extended warranty. So there is hope if having a warranty is important. I know you will enjoy your car.
A Carfax report will also show the date it was sold and registered.