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Autosteer maximum speed and automatic speed adjustment

TessiY

Member
Jul 23, 2021
15
24
Outer Space
Hi all,

We got our Model Y a few days ago, so we're still learning. (MY LR, no FSD)

One thing I noticed is that the autosteer gives me an Error message "only available up to 55mph" and that the autosteer / cruise control mode doesn't automatically adjust (up or down) depending on the speed limit signs the car detects.

Is this a settings problem, a software "feature" or just not supported without FSD. We have the 2021.11.102 Software version.

Thanks!
 

AlexHung

Member
Mar 13, 2021
351
339
Santa Cruz, CA
From the manual:
Screen Shot 2021-09-12 at 4.54.42 PM.png
 

TessiY

Member
Jul 23, 2021
15
24
Outer Space
I encountered this on a highway with a 60MPH speed limit. The car showed the 60MPH speed limit sign in the display and was following the car in front of us. just fine. Other documentation I found on the tesla website says up to 80MPH. I'm wondering if the Software on my brand new car is back level from a feature perspective.

1631491103776.png
 

boulder.dude

Member
May 20, 2021
185
284
Boulder, Colorado
I encountered this on a highway with a 60MPH speed limit. The car showed the 60MPH speed limit sign in the display and was following the car in front of us. just fine. Other documentation I found on the tesla website says up to 80MPH. I'm wondering if the Software on my brand new car is back level from a feature perspective.

View attachment 708623
80mph on divided highways.

5mph over posted limit elsewhere
 
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E_R_N

Member
Jun 16, 2020
158
148
Vancouver
The automatic speed adjust up or down based on the speed limit signs is kind of random. Only works in some places. Some people will say it doesn’t speed up, only goes down but it actually does adjust up and down.
 

JHamCell

Member
Jun 5, 2020
18
2
VILLA RICA, GA
My observation is that speed up only goes as fast as your speed before it slowed down.

Let's say you are doing 60.
You pass a 50 sign - the car slows to 50(+5 if you have that set)
So long as you do not disengage, when you pass the next 60 sign, it will go back up to 60.
If you pass a 70 sign, it will not speed up passed the highest speed you were already going,which was 60.
 
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rjpjnk

Member
Mar 12, 2021
837
459
NJ
My observation is that speed up only goes as fast as your speed before it slowed down.

Let's say you are doing 60.
You pass a 50 sign - the car slows to 50(+5 if you have that set)
So long as you do not disengage, when you pass the next 60 sign, it will go back up to 60.
If you pass a 70 sign, it will not speed up passed the highest speed you were already going,which was 60.
This is not what I observe. If I have TACC active in a 55 mph zone and I pass a 35 mph sign, the car successfully reads and displays the 35 mph sign but most of the time does not change speed (i.e., Max Speed is still 55). I say most of the time because every once in a while (for no reason I can make sense of) it does change to the new speed.

I figured it's just plain broken. Is this not normal?
 

JHamCell

Member
Jun 5, 2020
18
2
VILLA RICA, GA
This is not what I observe. If I have TACC active in a 55 mph zone and I pass a 35 mph sign, the car successfully reads and displays the 35 mph sign but most of the time does not change speed (i.e., Max Speed is still 55). I say most of the time because every once in a while (for no reason I can make sense of) it does change to the new speed.

I figured it's just plain broken. Is this not normal?
Ahhhh.
Yes, TACC does not adjust speed. I confirmed mine behaves this way.
However, Autopilot does adjust speed for me as I described above.
My apologies for missing that in your original post.
 

JHamCell

Member
Jun 5, 2020
18
2
VILLA RICA, GA
By Autopilot do you mean TACC + Auto steer (i.e., 2-clicks) ?
Does not change speed for me typically.
Yes.
When driving on non divided highway surface streets it will slow down when speed limit drops.
On divided highway and interstate it does not.
I'll see about setting up my go pro and capture for clarity.
 

Max_G

Everything needs to be defined :)
Sep 19, 2021
45
37
Brisbane, Australia
I wondered about the same thing... did only 110 km (70 mi) today in my new M3LR with 80% hwy driving.
Say with a 100km/h limit, AutoSteer stuck to 100km/h (but would not allow me to go over); but did not change speed up when previously reduced to say 80, 60... hence, I had to re-engage the AutoSteer or TACC. This is no good, and looks like a fault.
It should pick up the signs and adjust accordingly; auto-steer or not.
 
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