u/Positive_Western_846

Recently took it to the mechanic and The battery (new battery recently) + alternator was tested on start and idle to be fine (also replaced alternator two years ago)

I had a loose negative battery terminal bolt, but that was fixed, and now it’s still showing up this alert a couple of minutes after starting the car.

Any diagnosis or fixes? Maybe serpentine belt (it was replaced a 2yrs ago) or maybe timing tensioner?