DJ 240V
Member
You are correct, and I was.
TACC does in fact work all the way down to 0 and back up again. I am not sure WHAT I was doing when it didn't, but careful testing showed it will follow a lead car to 0 then back up to traffic speed--then I went back to the release notes, and could not find anything about a 5 mph limitation, so I don't know where I got that one.
Interestingly, it seems that when TACC is OFF, the car loses the ability to see the cars ahead at around 5 mph, which DOESN'T happen when TACC (or AutoSteer) is engaged.
I also had the interesting experience of coming up on an intersection with TACC on, and having it "see" the cross traffic for a moment. The little car icons crossed the dashboard perpendicular to the lane markers (I couldn't tell which way they were oriented, as I was watching to see if/when I needed to stop...)
I believe you can't engage TACC under 5 mph. But once engaged it will work from 0-75 ( was 90 previously).
The Lane display goes biserk at intersections. I guess the need to update the software to handle intersections.
Also my hunch is there has to be some additional drain on the battery using the radar, so perhaps they are optimizing it if you are not using TACC at low speeds? Probably a small gain especially when auto emergency braking probably has to use it all the time.