11.9 .... good for about 550 miles with a gallon left and an 11 gallon fillup.
Alarms and chimes have always been configurable in Gen 2 & 3.
Trust me ... when braking over a bump when coming to a stop ... that was a braking transition issue.
Disconcerting the first time you experience it, but not dangerous at all.
I've experienced it a few times in 40K miles myself .... your dealer should have explained that to you.
Your traction control issues were mostly tire related.