Originally Posted by BlckWK2
One thing that has not been mentioned is Hill Start Assist. It may very well be that the user thinks they shifted into park, letting off the brake, and the vehicle doesn't move so their good. But the vehicle is actually providing Hill Start Assist which has the brakes engaged for only a few seconds. It disengages and the Jeep starts to roll.
Still user error but I can see that catching someone off guard and believing it was in park.
This is the first I've heard of this. "Hillside Assist" used to only be required on stick shift, standard transmissions, in order to prevent rollback when trying to engage the clutch on a steep grade. Or else they had a, "Line Lock" that would set the front brakes with a button on the stick, and you could release them as soon as you felt the clutch grab hold. Why would you even need "Hillside Assist" with an automatic? Is this some type of add on option, or do all Grand Cherokees come with this?