highway assist disengaged

[coma24]

v2.2.4, HA was engaged and driving well, including a few lane changes. Out of the blue, HA disengaged with a red error message (I don't recall the specifics, it wasn't on screen for very long, and I was driving at that point). From that point on, HA would not come up as an option....the only choice was Adaptive Cruise, despite being on an interstate where I have used HA without issue in the past.

Customer Care noted the issue and asked me to let them know if it happens again, however, they weren't interested in pulling the logs to find out what happened in this instance.

There were no sensor errors or persistent warnings. It was completely out of the blue. It was an issue because the car started braking hard (high regen) since my foot wasn't on the throttle. I took over, obviously, as quickly as possible, but RIP anyone who was following close behind (nobody in this case, mercifully). Additionally, had this happened while taking a corner, it would've been even more startling and could've easily ended up in a lane departure, or a trip into the shoulder, depending on driver reaction time.

@mcr16 given that a red error message showed up (something along the lines of "Highway Assist canceled," but with a bit more detail), it sounds like the required constraints for HA engagement were no longer met, hence the system dropped out, leaving HA unavailable for the remainder of the drive, despite the issue not being associated with any specific sensor outage (otherwise I would've been an error along those lines).

Has anyone come across this before?

 

[Adnillien]

I have had this happen twice. I believe the red error message says driver assist ended but like you the message does not display long enough to read when you are driving. It is very startling when it occurs. Unlike you I was able to re-engage it after it happened.

 

[Tâm]

v2.2.4, HA was engaged and driving well, including a few lane changes. Out of the blue, HA disengaged with a red error message (I don't recall the specifics, it wasn't on screen for very long, and I was driving at that point). From that point on, HA would not come up as an option....the only choice was Adaptive Cruise, despite being on an interstate where I have used HA without issue in the past.

Customer Care noted the issue and asked me to let them know if it happens again, however, they weren't interested in pulling the logs to find out what happened in this instance.

There were no sensor errors or persistent warnings. It was completely out of the blue. It was an issue because the car started braking hard (high regen) since my foot wasn't on the throttle. I took over, obviously, as quickly as possible, but RIP anyone who was following close behind (nobody in this case, mercifully). Additionally, had this happened while taking a corner, it would've been even more startling and could've easily ended up in a lane departure, or a trip into the shoulder, depending on driver reaction time.

@mcr16 given that a red error message showed up (something along the lines of "Highway Assist canceled," but with a bit more detail), it sounds like the required constraints for HA engagement were no longer met, hence the system dropped out, leaving HA unavailable for the remainder of the drive, despite the issue not being associated with any specific sensor outage (otherwise I would've been an error along those lines).

Has anyone come across this before?

I don't recall that kind of sudden loss of HA prior to this version for the past 2 years. With this current one, it has happened quite often. I assume it's just a bug and subsequent versions will make it as reliable as previous versions.

 

[Cosmo Cruz]

Wait, you can disengage HA ?

 

[Tâm]

Wait, you can disengage HA ?

Yes. You can intentionally do it but in this thread, it just randomly does it against my will

 

[Bus Driver]

I’m still on 2.4.2. Not particularly anxious to get 2.4.4 or whatever the latest iteration is.

A week ago, starting my 140 mile drive to work, I couldn’t engage HA at all. Every once in a while upon attempting to engage, the steering wheel icon on the instrument panel would highlight momentarily but grey out again. In any case I couldn’t engage HA.

Four days later, on the 140 mile return drive home, the moment I hit the freeway and engaged HA, it activated right away, working flawlessly along with automatic lane changing, the whole way home.

I have to drive to work again tonight. Who knows if I’ll get HA again?

 

[coma24]

Wait, you can disengage HA ?

I don't understand the question.

 

[Cosmo Cruz]

I don't understand the question.

It took me almost a year to figure out how to avoid / turn-off HA when all I wanted was AC. The display is hidden behind the top of the steering wheel, I guess because the "LUCID AIR" logo is critical driver info?. HA seemed to be the default mode such that I could not avoid it. It tries to take every exit off the PA Turnpike, against my will, and tries to jerk the wheel out of my hands. I have to duck below (can't see the road now) to see it and can't seem to turn it off. I absolutely hate it. After two years of ownership I can mostly avoid it...but can't delete it. Even the concept of "self-driving cars " boils my brain. I have to wonder if Skynet is behind this. Someday a terrorist group will take control of all the self-driving cars ...

hey ... do you think TSA will make us leave our phones at home before we fly? I mean, a terrorist group can make them explode and bring down a plane ... no electronic device is safe from terrorists after what happened in Lebanon with the pagers / radios. Time to short airline stocks.

My car has been in the shop for months (deer season in PA) so I've missed the last few updates. Is it "less bad" now ?

Anyway it was a "joke".

 

[Tâm]

With version 2.4.2, the cruise bugs also happen. I used to be able to set the cruise fine but as pictured below, the cruise can't detect the real car in front but when that car moves away, the system still detects that car but only for the purpose of warning "Traffic cleared" for me to move the car forward to catch up with the traffic. It's not the sensor problem. As usual, I think the bugs will be fixed soon.

 

[Cosmo Cruz]

Tam ... do you have a camera in your navel?

I have never seen the top of the driver display before! It looks like it says "Adaptive Cruse"?

It would be fantastic if I could see that part of the dash!

Deer ran into me 100 meters from home. There are millions of deer in SE PA alone. I'd take a photo from my driver position but my car is in the shop
for a decade or two. See how much damage there is? Anyone wanta guess how much this will cost. Here is what was next to me at the Lucid recommended repair shop:
yes they did an Enzo !

Does Lucid offer a "Rhino Package" ?

 

[Tâm]

Tam ... do you have a camera in your navel?

I have never seen the top of the driver display before! It looks like it says "Adaptive Cruse"?

It would be fantastic if I could see that part of the dash!

No camera on the belly button: only navel ring.

The camera is implanted on the chest .

Yes. The ADAS in the city is "Adaptive Cruise."

For highways, the label "Highway Assist" would be at that location.

Maybe you are not sitting at a low angle in order to see those 2 labels (1 visible at a time) at the top of the dashboard.

Sorry to hear about the deer accident. The car held up well with only a few minor dents. Good luck!

 

[ksn]

v2.2.4, HA was engaged and driving well, including a few lane changes. Out of the blue, HA disengaged with a red error message (I don't recall the specifics, it wasn't on screen for very long, and I was driving at that point). From that point on, HA would not come up as an option....the only choice was Adaptive Cruise, despite being on an interstate where I have used HA without issue in the past.

Customer Care noted the issue and asked me to let them know if it happens again, however, they weren't interested in pulling the logs to find out what happened in this instance.

There were no sensor errors or persistent warnings. It was completely out of the blue. It was an issue because the car started braking hard (high regen) since my foot wasn't on the throttle. I took over, obviously, as quickly as possible, but RIP anyone who was following close behind (nobody in this case, mercifully). Additionally, had this happened while taking a corner, it would've been even more startling and could've easily ended up in a lane departure, or a trip into the shoulder, depending on driver reaction time.

@mcr16 given that a red error message showed up (something along the lines of "Highway Assist canceled," but with a bit more detail), it sounds like the required constraints for HA engagement were no longer met, hence the system dropped out, leaving HA unavailable for the remainder of the drive, despite the issue not being associated with any specific sensor outage (otherwise I would've been an error along those lines).

Has anyone come across this before?

I received this error yesterday. I had updated to 2.4.4 Tuesday night and everything worked great. I was able to test lane change and it was seamless. But half a mile before the exit HA disengaged and regen kicked in. Thankfully there were no cars close by and I was able to accelerate. I didn't try to engage HA since I was almost at my destination.

When driving back last evening lane change never activated (it was 60 mile drive). Does the calibration need to happen every time we engage HA? Also when the traffic ground to a halt even for a few seconds it asked me to press the accelerator / turn the nob when vehicle in front of me moved. I thought this release the auto-reuse (Extended Stop and Go). But in my case it felt it did not resume even if traffic was stopped for a few seconds

Overall love the improvements and hopefully some of these kinks get ironed out soon

 

[Tâm]

I received this error yesterday. I had updated to 2.4.4 Tuesday night and everything worked great. I was able to test lane change and it was seamless. But half a mile before the exit HA disengaged and regen kicked in. Thankfully there were no cars close by and I was able to accelerate. I didn't try to engage HA since I was almost at my destination.

I am now trained to be more prepared and ready to press the accelerator whenever there's an unexpected disengagement.

When driving back last evening lane change never activated (it was 60 mile drive). Does the calibration need to happen every time we engage HA?

Not sure. That depends on how the fixing update firmware is written and might require recalibration once for the update but not for every HA usage.

Also when the traffic ground to a halt even for a few seconds it asked me to press the accelerator / turn the nob when vehicle in front of me moved. I thought this release the auto-reuse (Extended Stop and Go). But in my case it felt it did not resume even if traffic was stopped for a few seconds

Correct. I only read that it's now auto-go after a highway complete stop while on HA/cruise but that never happens in my experience. It's a bug of a missing feature.

Overall love the improvements, and hopefully, some of these kinks get ironed out soon

Me too. It's nice to see progress despite some bugs.

 

[Bus Driver]

I received this error yesterday. I had updated to 2.4.4 Tuesday night and everything worked great. I was able to test lane change and it was seamless. But half a mile before the exit HA disengaged and regen kicked in. Thankfully there were no cars close by and I was able to accelerate. I didn't try to engage HA since I was almost at my destination.

When driving back last evening lane change never activated (it was 60 mile drive). Does the calibration need to happen every time we engage HA? Also when the traffic ground to a halt even for a few seconds it asked me to press the accelerator / turn the nob when vehicle in front of me moved. I thought this release the auto-reuse (Extended Stop and Go). But in my case it felt it did not resume even if traffic was stopped for a few seconds

Overall love the improvements and hopefully some of these kinks get ironed out soon

Post 2.4.2, I lost HA on one of my 140 mile drives to work. I was never able to engage it at all. The steering wheel icon on the left side of the speed indicator remained greyed out. Post 2.4.3 I seem to have gotten back HA, but that’s based on only one 140 mile drive back home, after installing that particular update.

Three times on my post 2.4.3 update install, HA disengaged three times during my 140 mile drive home. No rhyme, no reaason, just a big warning in red lettering on the far left hand side of the driver instrument panel. It’s a good thing I’ve been driving Teslas and the Lucid for for several years now, I’m pretty quick about “picking up where the EA/FSD/HA drop off”. Still, it must have been disconcerting for the drivers behind me to see me slowing down so abruptly.

I hope this abrupt HA disconnection is a bug that’s ironed out very soon. It sort of reminds me of Tesla’s “phantom braking” of old.

 

[Cosmo Cruz]

Gee the upside of waiting for parts is I was not able to update the car.
I have not been following the posts but the gist I get is not everyone is happy?

I'm as happy as a clam as it was
... I see no reason to install any updates now.
wife has an i phone and she navigates.
she tells me where to go
she knows how to push my buttons.
I just drive the car.

My voice-command is built into the marriage.

 

[borski]

Gee the upside of waiting for parts is I was not able to update the car.
I have not been following the posts but the gist I get is not everyone is happy?

I'm as happy as a clam as it was
... I see no reason to install any updates now.
wife has an i phone and she navigates.
she tells me where to go
she knows how to push my buttons.
I just drive the car.

My voice-command is built into the marriage.

Most people are happy. Some people are not. Those that are not likely have hardware issues that have cropped up for the first time simply because more (read: all) the hardware is actually being utilized simultaneously now, which would mean latent hardware issues that were there are no longer latent.

Some will be resolved via software adjustments, but some may require service visits.

Luckily, future vehicles won’t have this issue, as they will all be tested on new software, so it’s a relatively small time period that it will be an issue, for the small number of cars it affects.

And it’s not even discernible by trim; for example, my DE had issues and is in service for diagnosis, but the DE loaner I’m in has no issues at all with it and activated just fine.

And a reminder: the vast majority of people are not having issues. But some are.

Thanks for coming to my TED talk

 

[tjhappel]

This has happened to me last week on every single drive. Very strange and wow does it catch you off guard sometimes. Just not rhyme or reason to it seemingly. It drove 1.5 hrs straight in hov no interventions then freeway opened and it happened 3-4 times straight.

 

[Cuestix]

I had the same thing occur in our Lincoln Nautilus when BlueCruise disengaged unexpectedly. Yes, it startles the bejesus out of you the first time. Hasn’t happened in the Lucid, yet, but I don’t have DDPro, just premium. Adaptive cruise has been as expected on our Air Touring.
Had a similar issue with a rented Model 3, including the sudden braking in heavy highway traffic…very lucky I wasn’t rear-ended.
I keep my hands lightly on the wheel even when BlueCruise says hands free and would probably do the same with any ADAS. The feature reduces stress for long drives and probably makes a safer ride, but I’m not ready for full self-driving.

 

[coma24]

@mcr16 is it possible you might be able to aggregate these and relay to the team? I mentioned the specific timestamp to customer care (at their request), which implies they might be needed for these other cases, but if nothing else, the general descriptions above point to the possibility of unexpected HA disengagements, all of which have the red error message associated with them.

I'm not sure what level of telemetry data can be pulled, but hopefully it's possible to see (after the fact) why the system is unable to remain engaged.

FWIW, I have not been able to repeat the issue again, although my HA engagements have been relatively short and successful. I'll try some longer drives with it.

Perhaps it would be possible to obtain a list of the conditions under which it might unexpectedly disengage (traction event, a nearby motorcycle, data connectivity loss....whatever the conditions are) so that we can keep those in the back of our minds during future instances.

 

[marqie]

We are working on improvements to Highway Assist to reduce the number of disengagements that occur, which we plan to address in an upcoming release. As always, the driver needs to remain attentive and prepared to take over at any time.

In most cases, Highway Assist can be re-engaged immediately afterwards, but in some instances a power cycle may be required.