Vehicle: 2018 TLX-Tech V6-AWS
(1) When ACC is engaged and the car in front is moving more slowly, do the brake lights come on when your car slows to match the speed of the slower car?
(2) You likely have noticed that the ACC display shows the numeric speed at which the control is currently set. I’ve noticed that this numeric display may periodically disappear… and then later, return. Why?

 

Break lights come on when ACC is breaking, so probably not on a slow follow. Just the way it would happen if you were in control.

I've never seen the numeric speed go away.

If you did not know, you can change that set speed with the control. If you press and hold it will go to the next mod 5 speed. Nice feature.

 

As for the "disappearing" display of the set speed... I'll keep my eye on that quirk. If it persists, I'll take it in for possible service. So far, I absolutely love this 2018 TLX-Tech!

 

I believe the speed setting goes away if you put your foot on the gas pedal - this overrides the ACC setting.

 

I think that's it... anyway, it sounds right! Thank you!

 

Yep when foot is on gas pedal!