CompleteHost
New member
Had the recent TSBs done on my '23 Limited including a T9Z update according to the service. Running a BM2 sensor and before the update, the 12V constantly charged while driving. Now, it seems to be all over the place - not charging at all sometimes, then kicking in on and off every few seconds/minutes.
Curious why Hyundai might have changed the whole 12V charging behavior, and what's the deal with this T9Z update? This "off-and-on" charging is concerning. Anyone else experience this after the update?
Curious why Hyundai might have changed the whole 12V charging behavior, and what's the deal with this T9Z update? This "off-and-on" charging is concerning. Anyone else experience this after the update?