I've had no false braking alerts on my 2024 - no brake alerts at all, true or false - so it apparently doesn't affect all Lyriqs.

 

I back out through a narrow garage door, so armed with the knowledge of the issue from this forum, I turn it to alert only when I set the car up at delivery. I plan to leave it there even if they fix this

 

I was also getting lots of false braking when backing out of the driveway. Also switched to alert only. Many thanks to this forum.

2024 Sport3

 

I had never had the issue until this weekend when my car was parked outside at my son's house in the rain. it hit the brakes so hard I literally thought I had hit something behind me, as did my wife. I was trying to back out of the driveway to get out of someone's way so attempted to continue and it happened multiple times. Settings are now set to warn only.

 

Yeah, it is quite jarring when this happens. Totally agree it feels like you hit something - or that something hit you.

 

I've gotten those false alarms before and it is quite the wake up, especially for the wife. Thanks I'll try the system change

 

I have experienced false braking several times when it is raining. The answer should not be to "turn off" this important safety feature. The answer should be for Cadillac to "fix" this important safety feature! I had this feature on my 2020 XT6, and it saved me more than once. This should be considered a very "standard" safety feature for a luxury vehicle. I would think this would be at the top of Cadillac's list of priorities since it involves "safety" and not a "nice to have" feature. When you spend $70,000+ on a luxury vehicle, you should expect to have all the safety features functioning as advertised.

 

You are 100% correct. I've had the problem numerous times (almost always in the rain). I would like to know Cadillac is solving the problem. I love my Lyriq, but this has a lot to do with just "getting what I paid for".

 

@kpsmith999 the engineers are supposedly working on a fix. The only thing you have to have turned off is the autobraking. It will still warn you. Assuming you backup normally (ready to hit the brakes) then it is still more safe. I frankly am not convinced that even working properly the harshness of autobraking is more safe.

 

Dadhawk......Thanks for your input! The only reason I am pushing for a "fix" is that during the 3 years I owned my XT6 there were at least 3 occasions where the auto-braking saved me from a collision and I may not have responded in time just to an alert. One that comes to mind was when I was in a fast food drive through line, I had to backup a few feet to move into another lane and the vehicle behind me had a carrier on the front end that I could not see. The XT6 braked about 8 inches from the carrier which avoided a collision. Since I was already so close to the vehicle behind me, I don't thin the alert would have avoided a collision. Another time i was backing into a space at a restaurant and could not see a cement abutment sticking out from some bushes. Again, the auto-braking was much faster than my reaction to an alert. Personally, I would like to see Cadillac fix/refine the auto-braking. I have not seen this issue reported in either the XT6 or other luxury vehicles that have auto-braking.

 

THIS. on my XT5 it saved me once when I backed out of parking spot without properly checking my surroundings. On alert only I don't think it would have done much good. Humans have crappy response time. Or at least this human does.

 

It appears that if you have your left foot pushing the brake pedal slightly, then the reverse hard braking doesn’t happen.

 

That has not been my experience. Backing out of the driveway involves modulating the brake pedal as it creeps down the incline. Car slams on the brakes full (and parking brake) regardless if I was slightly on the brake pedal or not.

 

Just an FYI kind of thing:
On Monday I got a letter in the mail asking if I wanted to sign onto a class-action lawsuit relating to improper action of the Automatic Emergency Braking system - on the VW ID.4. The other half has said a couple of times that the VW slammed on the brakes as the car was backing out of the garage.
It looks like this isn't a thing specific to the Lyriq.

 

Yesterday I was approaching a car stopped at an intersection, fully in control of the stop, and the forward emergency braking brake-checked HARD for about a quarter second, then turned off. Boy, I hope that never happens again. If someone had been tailgating me they would have eaten my rear bumper. Not to mention the pants-filling heart attack it gave me.

 

Was it raining or anything like that ?

 

No, it was a completely dry and mild day.

 

Yes, I also had a similar experience. I accelerated from a stop light with cars in front and rear and to my right. I'm guessing I was accelerating between 10 and 30 mph, when my brakes fully engaged. I kept my foot on the accelerator, drove to a lot and checked for damage. Nothing. I did notice the car behind me gave me a weird look, like "what's up man". That occurrence probably scared him almost as much as me. I have been reading a lot of these messages on braking problems and it is starting to worry me. One post said it happened to him twice in the forward direction with nothing around his vehicle, and at a speed of 40 mph.

 

Just set to 'Alert Only' or 'Off'. Really no other solution at this time beyond this workaround.

False reverse braking on the Lyriq is much more common on the Lyriq than false forward braking. But if it happens often - just disable it. Not really a worry item - just need to set accordingly and hope GM addresses at some point since we did pay for these features in theory.

 

This issue has existed for over a year. It is hard to believe that GM engineers can't provide a "fix" with all their substantial resources. It's not like they don't have many other GM makes and models (including other Cadillac models) that have successful implementations of Automatic Emergency Braking! In my particular case, I have had no problems with forward emergency braking (only rear during the rain), therefore, I leave the system on since you cannot disable the rear without disabling the front. Don't get me wrong......I love my Lyriq, but this important safety feature should be made to work as advertised!

 

This issue has existed for over a year. It is hard to believe that GM engineers can't provide a "fix" with all their substantial resources. It's not like they don't have many other GM makes and models (including other Cadillac models) that have successful implementations of Automatic Emergency Braking! In my particular case, I have had no problems with forward emergency braking (only rear during the rain), therefore, I leave the system on since you cannot disable the rear without disabling the front. Don't get me wrong......I love my Lyriq, but this important safety feature should be made to work as advertised!

You absolutely can disable the rear and front separately. There are two individual settings for the rear (Rear Cross Traffic Braking, Park Assist with Braking), and at least two settings for the front (depending on model year: Automatic Emergency Braking, Front Pedestrian Braking, etc). Go to 'Settings->Vehicle->Collision/Detection Systems' to select your preference for each.

I agree this is only a workaround, and has been an issue since Lyriq's launch 2 years ago. Bug fixes don't come fast to this car, and this apparently is a more difficult one. GM claimed a software update would help with this, but it hasn't for most of us.

Not a big deal for me, my ELR had the same issue with false forward braking alerts at one spot on my commute (as well as other random times) - so I just turned it off. Others may view it as an important feature, but for me I feel I probably shouldn't be driving if I needed to rely on all this. No harm alerting - but let me drive the car.

 

I stand corrected. My dealer said they disabled the AEB system which was apparently the front and rear systems. I come to find out that they are independently controlled so I enabled the front AEB since I am not experiencing any forward problems. I know bug fixes come slow, but 2 years???

 

I had my first experience of the phantom braking problem yesterday, backing into my garage - exactly the same way I've done it since I bought the car. But yesterday it slammed on the brakes while I was in the driveway, and again when I was pulling it into the garage. Clear skies, daytime, sunny and bright.
I'm wondering if it has anything to do with the software updates they applied in the whole steering wheel replacement debacle.

 

I had my first experience of the phantom braking problem yesterday, backing into my garage - exactly the same way I've done it since I bought the car. But yesterday it slammed on the brakes while I was in the driveway, and again when I was pulling it into the garage. Clear skies, daytime, sunny and bright.
I'm wondering if it has anything to do with the software updates they applied in the whole steering wheel replacement debacle.

Could be - but the software updates were supposed to reduce the false braking. I don't think there has been measurable change one way or the other - likely just an infrequent occurrence in your case.

 

The TSB has been expanded to include even more vehicles. No change in resolution - still advises to to just change alert settings.

 

This should have included forward collision since it has been an issue with my XT4 and others. It is more dangerous when on road or highway driving and you get phantom breaking…that is a hell of a problem. I got rear ended from it!

 

You absolutely can disable the rear and front separately. There are two individual settings for the rear (Rear Cross Traffic Braking, Park Assist with Braking), and at least two settings for the front (depending on model year: Automatic Emergency Braking, Front Pedestrian Braking, etc). Go to 'Settings->Vehicle->Collision/Detection Systems' to select your preference for each.)

I agree this is only a workaround, and has been an issue since Lyriq's launch 2 years ago. Bug fixes don't come fast to this car, and this apparently is a more difficult one. GM claimed a software update would help with this, but it hasn't for most of us.

Not a big deal for me, my ELR had the same issue with false forward braking alerts at one spot on my commute (as well as other random times) - so I just turned it off. Others may view it as an important feature, but for me I feel I probably shouldn't be driving if I needed to rely on all this. No harm alerting - but let me drive the car.

I stand corrected. My dealer said they disabled the AEB system which was apparently the front and rear systems. I come to find out that they are independently controlled so I enabled the front AEB since I am not experiencing any forward problems. I know bug fixes come slow,) but 2 years???

Here is a new one (at least for me). I turned the rear AEB to "alert only" based on comments in this thread about a month ago. Yesterday, I was backing out of a parking space at a supermarket while it was raining (no traffic behind me) and the AEB engaged for a jolting stop. I put the gear in "park" and tried again and the same thing happened 2 more times?? When I got home, I checked to see if the rear AEB was set to "alert only" and yes it was. There is definitely something wrong with this system!!!

 

There are at least four emergency braking settings. Make sure you have them all set to alert - sounds like you have one still turned on.

 

Over the last couple of months, I have learned that backing S L O W L Y out of the garage and down the short driveway eliminates the jerky, abrupt, symptom others have reported here. Haven't driven in hard rain - but did replicate the symptom at my son's house (driveway) which appears to be at a slightly steeper grade than our driveway. Reversing S L O W L Y didn't help much. As with others here, I thought I had hit something. Considered turning off auto braking, but with kids (and adults and pets) in the neighborhood(s), I'll take the jolts.

 

If Neighbor has sprinklers on the car slams on the brakes. Maybe Tesla was not so crazy to remove the radar sensors from their cars. This is a software problem and good luck seeing this fixed before you get your next car.

 

Not sure if it is radar or camera logic flaw. The TSB seems to indicate a visual issue, not radar.

 

I just received delivery on my sport 3 2 weeks ago and of coarse i was in for a shock when i back ed out of my driveway in the rain!!! I knew nobody was behind me and a car was not parked on other side the vehicle went into a skid the brakes hit so hard.i contact dealer and they said something about adjusting the personal sensitivity. I just changed it to alert

 

Another thread you may want to review on the subject

https://www.cadillacforums.com/threads/auto-braking-when-backing-up-it-was-also-raining.1143939/?post_id=18269931#post-18269931

 

Yep, well known LYRIQ issue that GM seems to ignore. I have other GM vehicles that do not have this problem.

Be aware that there are 2 or 3 different settings to set to 'alert'.

 

I turned the emergency braking for all functions off to stop the braking. This stopped it. A couple of weeks later I turned it on, and now its not a problem. I have no idea why.

 

Wait for it to rain - it will remind you.

 

Crazy that Cadillac hasn't bothered to fix this after all this time and expect you to just turn off a safety feature that you paid for instead. Doubly so when other cars in their lineup do not exhibit this issue.

 

Yeah - the list of cars is growing. Seems to be many of the newer designs having this problem...

 

Having owned my 2024 Lyriq for 6 months, each time I take it in for service, I list the "false emergency braking" as one the the issues I have. I noticed the first 3 times I was in for service, the false emergency barking issue was removed from my final work order (I assume so there would be no documentation on the issue)??? After that, I insisted that the issue be listed and remain on the work order. The last time I was in and asked it there were any updates or fixes for the problem, my service advisor told me that the dealership had received an advisory from Cadillac stating that the emergency braking system in "not" considered part of the standard Lyriq safety features, but is just a "convenience" feature that is provided and is not covered under the "must repair" warranty items or state lemon laws. I was really taken back by this! I went to Cadillac's website and looked at the Lyriq safety features and forward and real emergency braking is mentioned. Has anyone else heard of this excuse for not finding a "fix" for this problem?

PS - I have also had 2 false emergency braking (1 forward and 1 rear in the rain) with both settings on "alert only"??

 

This is crazy. So I bought my Lyriq in January and I think the false emergency braking has happened to me four times already. It scares the CRAP out of me each time, and the most recent time I thought I had whiplash it was so abrupt, even at only about 3 mph. I haven't looked for the Alert Only function, but certainly will... even though it sounds like that won't actually turn it off.