autostick

Hey fellow MOPAR Fam could someone with knowledge of autostick and sportmode help understand the diff some people say that autostick is similar and really helps at the track this is not me and I am asking

I've got a 2010 low mileage charger police interceptor hemi with the auto stick on the dash.It is aggravating enough of its location but it used to engage and all of a sudden it doesn't seem to work at all. Its a button on the shifter by the steering wheel. what would possibly be the cause of it...