I live and work in Miami and anyone who has ever driven here knows the traffic here in insane (I've driven in DC, Atlanta and LA as well so I know the traffic sucks there as well!). That said, I frequently use the adaptive cruise control (ACC), especially while in stop-and-go traffic (it will bring you to a complete stop and will restart moving as long as you aren't stopped for more than a few seconds). My wife was driving behind me this past weekend and called me on my phone to ask me if I was using the ACC while we were in traffic and I told her yes. She then told me she probably wouldn't recommend doing it any more as when I would slow down and brake the brake lights would not come on. Only when I would physically press on the brake pedal would the brake lights actually come on. My question to the folks here is should the brake lights come on while the Jeep is slowing down or stopping with the ACC? Up until this weekend I always assumed they did. Is there something wrong with my system or is this working as designed?