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2024 Lyriq high voltage battery

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20K views 76 replies 27 participants last post by  Jimpilot  
#1 ·
I am a new owner of a 2024 LYRIQ Took ownership 11/30. I love the car...great features. Then the big day came...12/6...Out of nowhere I started getting a "High Voltage System" Alert.Well, long Story short...took a few days to diagnose by local LYRIQ expert at dealership, but it required a Tech to be called from GM Engineering. Upon his analysis of the data it was deemed that the car needs a new battery! So I am now waiting for factory to ship the battery so it can be replaced.It is now 12/16 and the estimate is ETA of 12/21! So I have been without my LYRIQ since I brought it in. Appears that batteries need to be shipped in a dedicated truck due to hazardous materials hence the long delays! So, be aware if you start getting that High Voltage System error appearing. I know it can point to other areas that are easily fixed but it can also mean you need a "heart Transplant! unlikely to have the car by Christmas! Oh well...The risk of being an early adopter!! I will keep you posted!
 
#67 ·
Mine is in the shop and been dead for almost 3 weeks now. The original service dept caught fire the night before I took it in and the new service dept didn’t have loaners. They said I’d have to pay up front and then get reimbursed. To me that makes no sense. I have a brand new $60k paperweight and I have to fork over to get a car to drive? Lord only knows it would be forever to be reimbursed and not be easy to do. Luckily I still have my Escalade so I have been using that but not everyone has an extra car or the time to deal with getting a rental. My OG dealer had an account with the enterprise near them and they paid for the rental upfront. 🤷‍♀️
 
#8 ·
I just got a high voltage warning light this evening. My 2024 lyriq has 1600 miles on it. Will call the dealer in the morning and see what they want me to do. When I called OnStar they confirmed that I have a battery fault.
 
#9 ·
2024 Lyriq AWD: I had the same issue as revakh this evening. Had 157 miles range, but gear would not shift into D or R. OnStar said they saw multiple faults in different modules. Got Battery fault message from Roadside assistance will tow the car to the dealership in the am. But having only 1 car this sucks.
 
#10 ·
I generally love the car after owning it for only one month. I have figured out most of the controls except for the glitchy sound volume controls. The first time I got a text message. I almost jumped out of the car. It was so loud. I have found the" hidden" menu for navigation controls but find that the adjustments don't seem to stick or are impossible to set in the first place.
I'm going into the dealer first thing in the morning. Will let you guys know what I find out
 
#12 ·
took car in yesterday. said there are 2 other cars at the shop 'and will let me know in a few days' what is going on. Gave me a loaner, another lyriq, so I am fine with that. at this point they can keep my car until fixed ! btw the dealership is Costa Mesa Cadillac
 
#11 · (Edited)
Yeah I found out about that silly secret menu and got all the notification sounds lowered. Been driving Cadillac for 10 yrs now. Not impressed with the reliability of the Lyriq. I have had the car since Sept. it’s been in the shop about 4 times already. This is now the 5th.
 
#13 ·
I bought a 2024 Lyriq on Sept 17th and had a High Voltage Warning trip in mid-November. I took it to the dealer service center, and I still don't have the car back five weeks later. The service technician said that I had no Freon, but they could not locate a leak. They also said they found metal shavings in my HVAC system so the entire cooling system needed to be replaced. A GM engineer came out to personally look at my vehicle after a month. According to the last technician who provided an update, the engineer said the car was assembled without enough oil throughout the mechanisms, creating the metal shavings. Does that make sense in an electric car? I fear these cars may be deeply flawed. The service guys keep saying "we've been having all sorts of problems with these Lyriqs." I don't think the industry has enough skilled technicians to keep pace with EV demand.
Finally, I'll note that the service provided at the service center does not live up to the Cadillac brand. I had to beg for updates the first two weeks my car was in the center. I was told they had no loaners and they offered no rental. After kicking up some dust, they finally provided a loaner, only to ask for it back two weeks later so they could place me in rental. My partner drives a Mini and the service at the dealer's service center is impeccable. So far there has been nothing luxe about a Cadillac for me. Thanks for being in community (or commiseration) with me.
 
#14 ·
I said I would followup with update once I had one....As of yesterday ( 12/29/23, my new HV battery was installed and my Lyriq was once again handed back to me. I must say that once the battery was delivered, installed and updated the software pretty efficiently. Here are 3 pics of the new battery and the car in the shop! So far, all is great!
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#17 ·
Thank you for sharing and for updating us, looks like it’s all taken care of now and so I hope you have much more enjoyment now it’s fixed ( sorry it happened) but hey at least it’s all better now!! Thank you again for the pics. and update👍🏻👍🏻👍🏻☮
 
#15 ·
I took my car into the Costa Mesa Cadillac dealer just before Christmas. They headed over the long weekend and gave it back to me on Tuesday saying that they needed to do a software update. Since then I've driven about 200 mi without issue other than the fact that the charging light in the front of the dash now flashes red. The manual says this is due to a poor connection but the cable is not connected at all so that doesn't seem to be the issue.
The other thing that happens is from time to time. The one pedal setting reverses to no regenerative braking. And then the last thing that is a bit disturbing is when text messages come in the volume setting is unbelievably loud.
I have been assured by the service tech that GM is aware of these issues and hopefully new software upgrades will address them in the near future
 
#16 ·
I took my car into the Costa Mesa Cadillac dealer just before Christmas. They headed over the long weekend and gave it back to me on Tuesday saying that they needed to do a software update. Since then I've driven about 200 mi without issue other than the fact that the charging light in the front of the dash now flashes red. The manual says this is due to a poor connection but the cable is not connected at all so that doesn't seem to be the issue.
The other thing that happens is from time to time. The one pedal setting reverses to no regenerative braking. And then the last thing that is a bit disturbing is when text messages come in the volume setting is unbelievably loud.
I have been assured by the service tech that GM is aware of these issues and hopefully new software upgrades will address them in the near future
So one source of the one-pedal reverting to off has been found to be if you use the app to remote start the vehicle. By chance, is this something that you do?
 
#18 ·
Hi Everyone, following up with an update on 2024 AWD Lyriq. And an update on my road trip.

I received the vehicle back on 12/22/2023. The dealership mentioned that they had replaced the battery. (surprised me that this was required so early on). But glad they did it in a day. I then took the leap and went on a road trip from Seattle to Lake Shasta ~575 miles each way. Getting to Lake Shasta took us 15 hours. And this was largely due to issues with chargers along the way, setting up a different charging app at each station, and then getting it to work. Also, it took some time to get used to driving in a manner that allowed for some battery regeneration, while still not crawling at 65mph. I can say that for 100% charge (307 miles range), if driving is managed, then the actual range is likely between 290 - 307 miles. But I only realized this after seeing my range drop in the mountains (had 30 miles to reach the next charging station, and range was closing in on 35miles). However, the lift and coast approach, specifically on declines in the mountains, help regenerate the battery, and add a few miles of range, or at the least not reduce the range.

One my way there, I was unable to use cruise control for sometime as it said the Front Camera was blocked. However, I suspect this was due to the heavy fog I was driving through. After about an hour or so, I was able to enable cruise control (while still driving). I only received a service driver assist once, and that was on my drive back as I entered Seattle.

Some highlights and tips for those considering a road trip on the West Coast:
  • EVGO network (Cadillac's free charging partner) does not exist past Portland. I believe the next one is somewhere between Redding, CA and Sacramento, CA.
  • Use A Better Route Planner (as someone else had mentioned in this forum as well) - this saved my ass.
    • This app shows all Electrify America locations. ( I signed up for some monthly pass to get a reduced charging rate. I plan to cancel it in a month :))
    • They have 350KW Hyper chargers - pretty fast. But of course all Hyundai and Kia owners frequent these locations as they have free charging for 1 year ( I believe) with Electrify America.
    • The app also plans the stops based on the starting charge of the vehicle, and (if you know it) then the miles/kwH you enter.
    • I used the google maps in the vehicle, entered the charger address. google maps on the vehicle also estimates the % charge at the destination you entered.
  • I also used the Plug Power App to locate chargers between electrify America charge points as back ups. It is also a very good app. ( I wonder why there cannot be just one app for all companies)
  • Chargepoint is fairly common along the way. But most of them are 62.5 kW chargers. Not bad. they are pretty fast.
  • Charing past 80% does go very slow, even on a fast charger. I charged the battery to 100% twice.
  • Turn off one-pedal if you are going down slopes. Disable it, disable your cruise control, and just let the car accelerate with gravity. This will regenerate your battery.
  • When using cruise control
    • First gradually accelerate to the speed you want to set it at. Then SET your cruise control. Say 70mph.
    • Now, when there is a vehicle ahead of you (based on your forward collision detection setting), the car may slow down to 65mph or lower. However, as soon as that vehicle is out of the way, the car will accelerate to the cruise setting. This can be dangerous if you are approaching a curve/turn. This acceleration also uses up the battery. This is what I did -
      • As the car slowed down, I reduced the cruise set point within 1-2 mph of the actual speed of the car.
      • Now when the road was clear, and once the vehicle got to the new (reduced) setpoint, I gradually increased the cruise set point back to 70mph.
      • Also - whether cruise is at 65, 70 or even 80 - keep an eye on the energy consumption. The goal is to have it at 0, very slightly above the 0 lines, or of course best is in green. This does happen if cruise is set over a longer period as the vehicle ( if I understand correctly), does not need much juice to maintain that speed.
  • Note: Plan for losing range when driving through mountains and/or hilly regions.
Tip: If you do stop or drive by Portland, go to the Daimler PGE Electric Island (address is Laguna Ave something). In the second and third lane, there is a Hyper charger (Daimler's test unit) that is free. Look for the Dark Grey charger. they have two charging ports and can charge two vehicles with per fast charging at the same time.

EV experience: From speaking with other non-Tesla EV owners, everyone shares the same frustration of there not being enough charging stations for non-tesla vehicles. Hope GM comes out with the adaptor that allows others to also use the Tesla charging (including supercharger) network.

If you have any specific questions relating to the road trip related to charging, range, etc. feel free to ask away. Thanks to all of you for having such a forum. It was very helpful to me in planning this trip. And hence I wanted to give back by sharing my experience. I hope this is useful to some.

And yes, the jury is still out on the reliability of the Lyriq. I have a SPORT 3 on order (ordered in April '23). It is currently being built. Not sure if the new battery solved all the issues. I will keep you updated!
 
#20 ·
Hi Everyone, following up with an update on 2024 AWD Lyriq. And an update on my road trip.

I received the vehicle back on 12/22/2023. The dealership mentioned that they had replaced the battery. (surprised me that this was required so early on). But glad they did it in a day. I then took the leap and went on a road trip from Seattle to Lake Shasta ~575 miles each way. Getting to Lake Shasta took us 15 hours. And this was largely due to issues with chargers along the way, setting up a different charging app at each station, and then getting it to work. Also, it took some time to get used to driving in a manner that allowed for some battery regeneration, while still not crawling at 65mph. I can say that for 100% charge (307 miles range), if driving is managed, then the actual range is likely between 290 - 307 miles. But I only realized this after seeing my range drop in the mountains (had 30 miles to reach the next charging station, and range was closing in on 35miles). However, the lift and coast approach, specifically on declines in the mountains, help regenerate the battery, and add a few miles of range, or at the least not reduce the range.

One my way there, I was unable to use cruise control for sometime as it said the Front Camera was blocked. However, I suspect this was due to the heavy fog I was driving through. After about an hour or so, I was able to enable cruise control (while still driving). I only received a service driver assist once, and that was on my drive back as I entered Seattle.

Some highlights and tips for those considering a road trip on the West Coast:
  • EVGO network (Cadillac's free charging partner) does not exist past Portland. I believe the next one is somewhere between Redding, CA and Sacramento, CA.
  • Use A Better Route Planner (as someone else had mentioned in this forum as well) - this saved my ass.
    • This app shows all Electrify America locations. ( I signed up for some monthly pass to get a reduced charging rate. I plan to cancel it in a month :))
    • They have 350KW Hyper chargers - pretty fast. But of course all Hyundai and Kia owners frequent these locations as they have free charging for 1 year ( I believe) with Electrify America.
    • The app also plans the stops based on the starting charge of the vehicle, and (if you know it) then the miles/kwH you enter.
    • I used the google maps in the vehicle, entered the charger address. google maps on the vehicle also estimates the % charge at the destination you entered.
  • I also used the Plug Power App to locate chargers between electrify America charge points as back ups. It is also a very good app. ( I wonder why there cannot be just one app for all companies)
  • Chargepoint is fairly common along the way. But most of them are 62.5 kW chargers. Not bad. they are pretty fast.
  • Charing past 80% does go very slow, even on a fast charger. I charged the battery to 100% twice.
  • Turn off one-pedal if you are going down slopes. Disable it, disable your cruise control, and just let the car accelerate with gravity. This will regenerate your battery.
  • When using cruise control
    • First gradually accelerate to the speed you want to set it at. Then SET your cruise control. Say 70mph.
    • Now, when there is a vehicle ahead of you (based on your forward collision detection setting), the car may slow down to 65mph or lower. However, as soon as that vehicle is out of the way, the car will accelerate to the cruise setting. This can be dangerous if you are approaching a curve/turn. This acceleration also uses up the battery. This is what I did -
      • As the car slowed down, I reduced the cruise set point within 1-2 mph of the actual speed of the car.
      • Now when the road was clear, and once the vehicle got to the new (reduced) setpoint, I gradually increased the cruise set point back to 70mph.
      • Also - whether cruise is at 65, 70 or even 80 - keep an eye on the energy consumption. The goal is to have it at 0, very slightly above the 0 lines, or of course best is in green. This does happen if cruise is set over a longer period as the vehicle ( if I understand correctly), does not need much juice to maintain that speed.
  • Note: Plan for losing range when driving through mountains and/or hilly regions.
Tip: If you do stop or drive by Portland, go to the Daimler PGE Electric Island (address is Laguna Ave something). In the second and third lane, there is a Hyper charger (Daimler's test unit) that is free. Look for the Dark Grey charger. they have two charging ports and can charge two vehicles with per fast charging at the same time.

EV experience: From speaking with other non-Tesla EV owners, everyone shares the same frustration of there not being enough charging stations for non-tesla vehicles. Hope GM comes out with the adaptor that allows others to also use the Tesla charging (including supercharger) network.

If you have any specific questions relating to the road trip related to charging, range, etc. feel free to ask away. Thanks to all of you for having such a forum. It was very helpful to me in planning this trip. And hence I wanted to give back by sharing my experience. I hope this is useful to some.

And yes, the jury is still out on the reliability of the Lyriq. I have a SPORT 3 on order (ordered in April '23). It is currently being built. Not sure if the new battery solved all the issues. I will keep you updated!
Thanks for sharing. Regarding your highway driving, I think you are overthinking things and also just need more experience with one-pedal driving. There is no reason to change modes, and what you describe when going downhill does not result in more regen than proper one-pedal (or cruise control) driving. One-pedal just makes it so you need to hold your foot on the accelerator at a different position to achieve the same regen position where you believe the car to be 'coasting'. And when on cruise, the car does this all automatically. You aren't gaining more regen by turning these off and coasting. Watch the kW number on the gauge cluster under varying conditions, and you'll see you are just controlling the car differently with one pedal - ultimate regen is the same when your properly modulate the accelerator and don't lift off on it.
 
#25 ·
One pedal is dynamic based on speed. If you are going down a hill and partially lift up on the throttle (but not release it), you will slow and regen. There is a magic spot where you would 'coast' (gaining speed), as well as spot where the regen will hold your speed constant (no run away accel). And if you totally lift up, you'd come to a stop. How responsive this is depends on one-pedal On or High - all this involves regen. Just different than if you disable one-pedal, and use the brake pedal for blended braking when needed (which uses regen until you command more decel than it can provide).

Watch the kW gauge and figure on the left of the display, and you'll see what the car is doing in the various scenarios. You'll also see that even with one-pedal off, you'll still see regen when you release the throttle - there is no pure coast. This is because the can emulates an automatic transmission, simulating the effect of the minor engine braking that occurs. And to do this, it recaptures some energy for the battery - you'll never see the gauge show zero when coasting with one-pedal off and at a rate of speed - unless at a very slight upward incline.
 
#26 ·
I took delivery of a Lyriq Lux3 12/23/23, and by 12/29 and 130 miles on the odometer the Lyriq would not charge. Then I noted a High Voltage warning, and to service it soon. The handbook advises death or serious injury could occur should you drive this car with this warning. While scrolling menus trying to gain info, I noted no heat. I'd also noted intermittent Bluetooth operation and garage door opener function. I also noted intermittent one pedal operation, which I thought was my fault. Checking the menu display, it verified the Lyriq was on low regeneration one pedal mode. The car has been out of service since 12/30/23, but could not be exchanged for a loaner until 1/2/24. Fixing 1 connector by the EV tech didn't fix the issue as diagnosed. As of 1/16/24 I'm waiting for a different HVAC part that is on backorder, without any idea when that part will come directly from GM. How will this conclude? Hi voltage warnings, perhaps a faulty one pedal function - either could prove tragic. If you are waiting for your Lyriq then let this be a warning. I'm sorry I traded in my perfectly good XT4 for this marvelous piece of technological incompetence.
 
#27 ·
With the exception of Bluetooth and garage door function, everything sounds related to the HVAC system. Car will go into a certain type of limp mode because of this, so you wouldn't have one-pedal or regen as the car can't regulate battery temperature. Aligns also with your no heat and the climate control.

Let us know how you make out, and sorry to hear of your problems.
 
#28 ·
this is interesting. I got the same message on December 23, took the car in, got a loaner [another lyric] and told to pick up my car the day after xmas. Not a new battery but a software update. Where are you located? my dealer is Costa Mesa CA
 
#30 ·
In many cases it is a false alarm (incorrect error message popping up because of the inability to communicate with CAN bus). It will go away if you turn off and restart the car after some time (make sure your keys are not near the car, because if they are then the car will never really shut down). This is probably why the software update fixes it.
 
#31 ·
I appreciate you taking time to share this info. Unfortunately, the hi voltage warning never reset upon restarting, more than 24 hrs apart. And the software update was done a few days before taking delivery 12/23. The car has been down for 3 weeks now, sitting in the service department, failing the first part repair, and now waiting on another part on backorder from GM. Patiently waiting for the "bugs you should expect in a new car" (quoting service) to be worked out. I hope this is just a very unusual situation that nobody else experiences. I expect quality from Cadillac, not bugs.
 
#35 ·
I bought my 2024 Lyriq on 1/31/2024 - AWD Sport 3. I've had it 5 weeks and loved driving it until last night when I got the "Service High Voltage System" message. I have about 1,500 miles on the car. The service advisor at the dealership where I bought it told me the dual level charging cord that comes with the car is for emergency use only, and that by using it for routine charging, I "probably fried the battery." You may guess I wasn't happy with that, since the Cadillac literature and my salesperson clearly indicated the charging cord is for routine charging. I've been careful to charge to 80% capacity, and I've only charged the car a few times. I then called another dealership's service department. Both service departments told me this problem is a recurring one with the 2024 Lyriq. The diagnosis alone can take 1 -2 weeks, and both service department representatives said they have little experience with this car. While the dealership tries to set me up with a loan car, I am driving the Lyriq which seems to be working fine - for now.
 
#44 ·
Okay, I have deleted two posts that were simultaneously off-topic and trolling. The poster should consider themselves warned to stick to the topic and be constructive. Nobody in this thread should be expected to care about opinions about either the Lyriq's design or EVs in general.