Cruise Control No Longer Smooth

[cjones1130]

Has anyone else noticed the "jerky" nature of the cruise control? Assuming it came from the mid Nov update as I've never had this issue before.

For context; once the desired speed is reached the vehicle decelerates quickly instead of feathering in/out around the set speed. It is more noticeable on a slight descent.

At 1st I thought it may be dirty cameras so cleaned the windshield/grille thoroughly. But alas, it is no longer smooth...

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[Dark-Fx]

I have found that the follow distance setting makes a big difference in how aggressive it is about speed reduction, but I'm not sure if that's what you're experiencing.

 

[Boomkanani]

My cruise control works fine...stays at the set speed and doesn't deviate unless traffic ahead of me or the occasional car that drifts over the line from another lane.

 

[mikehmb]

I have found that the follow distance setting makes a big difference in how aggressive it is about speed reduction, but I'm not sure if that's what you're experiencing.

Any changes I've seen also seem to be tied to following distance. It seems to be more lax on the distance, and then overcorrects, slowing aggressively.

Could be the season change, too, and uncovering a corner case in the sensors - I drive into the sun on the way to work and again into the sun on the way home during winter.

 

[Newtonrj]

It fast decelerates if changing lanes where there is an accelerating vehicle within the cruise control zone. It also gets scared if something momentarily gets into its focal zone (snow, dirt, sun, shadow) or if the car drifts too close to real or hallucinated lane lines, notwithstanding if there are really lane lines present

 

[cjones1130]

I have found that the follow distance setting makes a big difference in how aggressive it is about speed reduction, but I'm not sure if that's what you're experiencing.

No, this isn't adaptive but general cruise control (no follow vehicle). Once set speed is reached, it backs off abruptly, as needed, to maintain the set speed.
Adaptive works as intended.

 

[Dark-Fx]

No, this isn't adaptive but general cruise control (no follow vehicle). Once set speed is reached, it backs off abruptly, as needed, to maintain the set speed.
Adaptive works as intended.

Only way I can get standard cruise is when towing, what are you doing different?

 

[cjones1130]

Only way I can get standard cruise is when towing, what are you doing different?

It is "always" adaptive, but when no car is ahead it's basically standard cruise control - simply maintaining the set speed. I've had it almost 3 years and it's never acted this way, very noticeable my wife even asked what was wrong.

 

[Donald Stanfield]

I’ve noticed improvements to the gen 2’s over the past few months in cruise and drive assist behavior. I’m not sure it’s related though.

 

[dleepnw]

I noticed the vehicles smoothness worsened after they added the brake assist feature. both the transition from regen to friction brake got more jerky and the overall regen while slowing down did as well. even after i disabled it. i think it also impacted cruise control but for me that was a while ago from update 2023.50 and never got better.

 

[cjones1130]

I noticed the vehicles smoothness worsened after they added the brake assist feature. both the transition from regen to friction brake got more jerky and the overall regen while slowing down did as well. even after i disabled it. i think it also impacted cruise control but for me that was a while ago from update 2023.50 and never got better.

After that update I had brake assist on just to test it and I've had it off ever since. Cruise was fine up until a couple weeks ago.

 

[McLovin]

Has anyone else noticed the "jerky" nature of the cruise control? Assuming it came from the mid Nov update as I've never had this issue before.

For context; once the desired speed is reached the vehicle decelerates quickly instead of feathering in/out around the set speed. It is more noticeable on a slight descent.

At 1st I thought it may be dirty cameras so cleaned the windshield/grille thoroughly. But alas, it is no longer smooth...

Gen 1 R1T Dual here…I posted about this in the software release thread the day after I installed it.

My commute takes me through a semi-country road that is 45mph and a bit hilly. I noticed that it was a bit over-aggressive when following another vehicle, and would result in a slinky-like ride, where it would accelerate to catch up, then hit the regen (I have brake-assist off), then accelerate again.

On highway cruise, it’s fine (just took a 400 mile trip up to NY), just these slower, hilly roads is where I have problems.

 

[cjones1130]

On highway cruise, it’s fine (just took a 400 mile trip up to NY), just these slower, hilly roads is where I have problems.

Highway is also an issue for me, with the"slinky" type approach you referenced to maintain the set speed.

 

[-TK-]

Gen2 R1T, heavy regen setting.

On a trip heading east from San Diego on I8, CC worked great except when heading down the mountain into the desert. Open road ahead, CC set at 72, going down constant slope hill, in regen the whole time, truck would oscillate between heavy and light regen with a period of about 1 to 2 seconds. Not a great feeling, similar to a rocking boat. Had to disengage until I was on relatively flat road.

Also noticed recently that coming to a full stop, foot entirely off the accelerator and break, truck applies heavy regen over a few seconds then lets up then heavy again. Assuming it is using break assist when it shouldn’t.
Now set to medium regen and it is much better.

 

[girons]

Has anyone else noticed the "jerky" nature of the cruise control? Assuming it came from the mid Nov update as I've never had this issue before.

For context; once the desired speed is reached the vehicle decelerates quickly instead of feathering in/out around the set speed. It is more noticeable on a slight descent.

At 1st I thought it may be dirty cameras so cleaned the windshield/grille thoroughly. But alas, it is no longer smooth...

Yes! I have been experiencing the exact same thing for several months. It seems to happen when I'm on flat open roads with no one in front of me. I had it (Gen1 Dual) in for service and asked them to look at it. They said a sensor need calibration, but that didn't help. I'm glad I'm not the only one and hope they fix it with a future update!

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