Will get computer glitches Has happened twice. Dealer states, it is because the battery gets low from the drainage from electrical systems. They recommend a trickle charger. I bought the car new and if this common should have been told. The car is driven every day.
So how much drainage is there in Milliamperes? Did the dealer go this far in checking things and do you know if they waited for a while for things to go to sleep before they did any testing?
Original battery? Has that been tested?
How many miles on the car and how much driving do you do?
Much info needs to be known to even be able to throw out a wild guess.
When you drive it, how far how long?
I would recommend, if you are not already do so, switching off the auto start/stop if equipped.