I sometimes experience "jerky braking" if that makes sense, and I don't have the ceramic brakes on my car. BTW, Is there a way to make the Hold function feature activate when I'm not on a slope...My BMW had this, and it was very useful on traffic stops, I don't even have to hold down the brake, the car does it automatically.

 

odd question, but are you in sport/sport plus mode when this happens? i have noticed that when in sport mode in any pdk trans that the car has odd shift points which make the car slowing down seem awkward... just a question.

 

What you're describing is the car senses it's on a decline or incline. AT 3mph thats creeping along in traffic or into a garage space or similar situation.

Check to make sure you weren't on a decline or incline 1st. If you weren't and it continues to do it call for service. - I've not heard of this issue thus far.

Nothing to do with Auto/Start/Stop. You must engage that feature to be 'on' and even then the car must be at a complete stop for it to work.

 

The problem is with the auto hold feature, the car gets confused when stopping sometimes. It doesn't like you coming to a hard stop on a slope and right before you come to a complete stop you ease up on braking to prevent a hard stop the computer thinks it needs to hold the car and automatiaclly holds the car which makes the car come to a really hard stop. hope this makes some sense.