Originally Posted by cheesesteak22
In theory, if you were to swap the NH1 ABS module with the one included in the NH3, would flashing the system with the update mentioned in that TSB enable the ACC w/Stop feature?
2 years ago I spent quality time with the Parts Manager at my dealership and the only hardware difference was the ABS module for all those early 2014 Model Year cars built before July 2013 that were already equipped with Active Cruise Control. The camera, the radar eye etc were the same.
NOTE: I believe the NH1 module is for regular non-ACC equipped cars. At any rate, you cannot add ACC w/ Stop to cars that were not previously equipped with ACC. It is not the only hardware needed. Beyond that, it is difficult but not impossible to retrofit "STOP" to an early 2014 ACC - equipped vehicle but might not be worth the effort.
At the time, the ABS module was a 3-400 dollar part, I contemplated doing it, I might still, but it is not on my automobile priorities list. But it is a $400 part that needs to be installed, probably with new or partially new brake lines because the lines look different; a brake fluid flush is necessary - it is a big project. Best to be done at the same time as the larger front brake rotors / ventilated rear brakes mod (if you have a 3.6 L V6 Pentastar) because you end up bleeding the brake system when swapping out the rear calipers. When I did the brake upgrade, I ran out of allocated funds for the ABS module so it did not happen. I guess I also lacked the motivation because I love the feature and use every time I drive the Jeep. But the Jeep is my wife's car and she doesn't ever use ACC. At least the Mitigation (Emergency Brake) is on, regardless. If I take over the Jeep as a daily driver some day, I will consider the upgrade.