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Phantom breaking in Autopilot (Model 3 2021)

I drove to Boston from the Cape tonight, in the dark. Cruise control but no AutoSteer. Every time a car came close behind me, it brakes checks them.

And when a car in front of me turns into the exit ramp and I am in the right lane (of 2), it slows down way too much thinking it’s in front of me instead of now in another lane.

is my experience typical? 2021 Model 3
 

novox77

Active Member
Nov 25, 2017
2,378
5,129
NH, MA
I drove to Boston from the Cape tonight, in the dark. Cruise control but no AutoSteer. Every time a car came close behind me, it brakes checks them.

And when a car in front of me turns into the exit ramp and I am in the right lane (of 2), it slows down way too much thinking it’s in front of me instead of now in another lane.

is my experience typical? 2021 Model 3


Your second scenario is common. It takes a while for TACC/AP to "let go" of a car moving out of a lane. I usually just tap the accelerator to override. Haven't experienced the brake-checking.
 
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TAfirehawk

Member
Jun 24, 2021
54
40
Texas
I have 18,000 miles on my 2021 M3LR and never had brake checking. And this is the first I have heard it on here but anything is possible...

As novox77 said, just press the accelerator and go on. I simply drive with my foot resting on the pedal except when other vehicles are around then I know it won't phantom brake.
 

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