2024 Cadillac Lyriq Electrical Problems

The infotainment screen in my car plus the menu control went completely dead. With the screen dead completely this mean you cannot see the speedomoter, rear camera feeds, warning symbols on the dash. You cannot see current speed, you cannot hear any sound so all alerting systems are down. You are completely blind in a vehicle built around this screen. Dealership has already confirmed faulty computer module. However was told it would have been originally resolved under N252500680. It has only been inspected by the manufacture. No warnings, no nothing, just dead screen out of nowhere that requires new part to bring online. Meaning dead dead; part is currently on back order and design changes were made after this exact model year showing knowledge of the fault.

NHTSA ID

11753137

Incident

Jul 16, 2026

My 2024 Cadillac LYRIQ generated the following High Voltage Battery fault codes via On-Demand Diagnostic: U2B4A, U2B4D, U2B50, U2B53, U2B56, U2B59, U2B5C, U2B5F, U2B62, U2B65, U2B68 — all under module VIC - Lithium-Ion Battery. Multiple codes are flagged "Service Right Away" indicating an active fault in the high voltage propulsion battery system. I brought the vehicle to Lindsay Cadillac, Alexandria VA [XXX] ) on [INSERT DROP-OFF DATE]. As of today [INSERT TODAY'S DATE], the vehicle has been sitting at the dealership for [X] days with ZERO repair action taken. The service manager has stated he does not know what to do, has no timeline, and cannot provide any answers. GM Technical Service Bulletins PIP6009B and 25-NA-044 specifically cover these exact DTCs and provide a documented repair procedure. The dealer has failed to follow or initiate this procedure. No loaner vehicle was provided despite this being a warranty repair on inoperative vehicle. I have been forced to rent a vehicle at $125/day out of pocket. I have an open Cadillac Concierge case number [93707662 #]. Cadillac Concierge was unable to reach the dealer's service department by phone. I have escalated in writing to GM's executive office including [XXX] and [XXX] with no resolution. This is a high voltage battery fault on an all-electric vehicle flagged as "Service Right Away" severity. The vehicle remains unrepaired, the dealer is unresponsive, and GM's own customer service cannot reach the dealer. This represents both a safety concern and a complete failure of the warranty service obligation. I am requesting NHTSA investigation of both the underlying battery defect and the dealer's failure to act on a known TSB. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11732450

Incident

Apr 17, 2026

The vehicle has experienced repeated failures of the infotainment and display system, including the screen going blank and displaying “no content available” while functions such as Apple CarPlay are actively in use. The issue affects the ability to control media and view system information from both the main display and steering wheel controls. The vehicle has undergone multiple repair attempts, including replacement of the human machine interface (HMI) module and radio module, as well as repeated programming. Despite these repairs, the issue continues to reoccur, including immediately after the most recent repair. The condition is intermittent and difficult to duplicate, and a field service engineer has been unable to consistently reproduce the issue. The dealership has indicated there may not be a current fix and that resolution could depend on a future software update. This ongoing failure of critical display and control systems raises safety concerns and has not been resolved despite multiple repair attempts.

NHTSA ID

11729930

Incident

Mar 12, 2026

We own a 2024 Cadillac Lyriq EV. We began experiencing safety concerns related to battery performance and overall vehicle reliability during the active bumper-to-bumper warranty period. These concerns were reported to an authorized GM dealer, Napleton Cadillac, prior to warranty expiration. Service records at Napleton Cadillac document the history of these complaints. The vehicle has been unable to process required over-the-air (OTA) software updates through GM's intended automated update process. During a dealer visit on February 17, 2026, at GM's direction, the Napleton Cadillac service technician confirmed that the vehicle had multiple open notices and that our reported concerns are consistent with known issues affecting the 2024 Cadillac Lyriq across multiple units — indicating this is not an isolated occurrence. The dealer advised that correcting the update failure would require approximately five hours of manual labor at an estimated cost of $1,250 — a cost GM has declined to cover, despite the fact that the OTA update process is the manufacturer's intended method for delivering safety-critical corrections and the failure to update is a vehicle deficiency, not a customer-caused condition. Due to these unresolved safety concerns, we have not been driving the vehicle. We do not have confidence that the vehicle is operating safely or as designed. We formally requested a repurchase from General Motors through the EV Concierge program (Case No. 87486271). That request was denied on March 14, 2026, citing two rationales: (1) the vehicle is out of warranty, and (2) system updates do not qualify for repurchase. We believe these rationales fail to account for the fact that the original safety complaints were filed during the warranty period and that the root issue is battery and system safety — not a routine software preference. We are filing this complaint to create a formal federal safety record and to request that NHTSA evaluate an investigation or recall.

NHTSA ID

11725923

Incident

Aug 12, 2023

I experienced a complete electrical failure in my 2024 Cadillac Lyriq that prevented access to the vehicle while an infant was inside. The incident occurred when the vehicle’s 12-volt battery system failed, causing a total loss of electrical power and rendering the vehicle completely unresponsive. As a result of this failure, all electronic entry systems stopped functioning and the exterior door handles remained in the locked position. There were no warning signs or error messages communicated from the vehicle. Because the vehicle could not be unlocked or accessed from the outside, an infant was trapped inside the vehicle for approximately 27 minutes. Cadillac has been contacted and they confirmed a faulty 12 volt battery and since then replaced the battery. The incident was recorded by home security cameras and documentation has been preserved. This event raises a serious safety concern. A failure of the 12-volt battery should not disable all methods of entry into a vehicle, particularly when the design of the Cadillac Lyriq uses electronically actuated exterior door handles that remain recessed and locked without electrical power. This creates a situation in which occupants may be trapped inside the vehicle with no reliable means for outside access. The inability to unlock or mechanically access the vehicle during a power failure presents a significant risk of injury or death, particularly in situations involving children, extreme temperatures, or medical emergencies.

NHTSA ID

11722688

Incident

Jan 4, 2026

While slowly turning into a parking space at approximately 1 mph (?) the vehicle unexpectedly accelerated. The vehicle mounted the curb, and struck a a parked car and hit a brick retaining wall, causing damage to both. This all happened within a few seconds and there were no warning lights or messages before or during the accident. I was not injured and there were no other people present. The police were called and inspected the damages. The insurance company was contacted due to damages. No one was in the parking lot at the time. The manufacturer was notified and will inspect the car for cause/failure.

NHTSA ID

11721442

Incident

Feb 18, 2026

After a manufacturer-initiated software/system update was performed on my 2024 Cadillac Lyriq approximately two weeks ago, the vehicle stopped charging and stopped generating heat. I brought the vehicle to Cadillac Norwood MA for diagnosis. The dealership informed me that a replacement part is needed, but the part does not currently exist and must be manufactured by General Motors. They could not provide any timeline for when the part would be available or when the vehicle would be repaired. The vehicle is being held at the dealership indefinitely. I have opened a case with Cadillac's EV Concierge and filed a formal complaint with them, but have not received a resolution or timeline. This vehicle is used professionally as a chauffeur vehicle and the inability to charge or heat the vehicle renders it completely inoperable and unsafe, particularly in Massachusetts winter conditions. A vehicle losing all charging capability and cabin heating after a software update represents a serious safety concern for EV owners

NHTSA ID

11718201

Incident

Feb 4, 2026

On November 26, 2025, while traveling in stop-and-go freeway traffic, I experienced a severe braking failure that led to a rear-end collision. Despite applying maximum force to the brake pedal, the vehicle did not decelerate as expected. Objective technical evidence from the Bosch CDR report (Case #1105768) confirms a critical system failure: Extreme Driver Input: At -0.5 seconds before impact, Driver Applied Brake Pedal Pressure reached 10,935 kPa, representing a near-maximum emergency braking effort. Inadequate Response: Despite this peak pressure, the Vehicle Indicated Speed decreased only from 24 MPH to 22 MPH in the final 0.5-second interval. Data Discrepancy: The vehicle decelerated by 12 MPH (from 36 to 24 MPH) between -1.0s and -0.5s under lower pressure (7,695 kPa). However, when brake pressure was increased to its peak at -0.5s, deceleration effectively stalled. Electronic Anomaly: The Traction Control System (TCS) was reported as "Active" throughout the braking event, indicating potential improper electronic intervention. This vehicle has a history of significant electrical failures, including a total power loss on 10/15/2024 that required a high-voltage battery replacement. The failure of the braking system to respond to maximum driver input poses a catastrophic safety risk. I am requesting an investigation into the 2024 Cadillac LYRIQ's brake-by-wire and electronic stability control integration.

NHTSA ID

11715908

Incident

Nov 26, 2025

My 2024 Cadillac EV is only 9900 miles. I was driving the car on Sunday Jan 11, 2026 with my family when we noticed smoke filled inside the cabin. My 3 children (a [XXX] , a [XXX] old, and a new-born who is [XXX] old) were in the car; they inhaled the smoke. We evacuated the car and called onstar for assistance - who towed the car. The smoke originated from the tailgate of the car. Alarmingly, just 3 days before this incident (Jan 8, 2026), I took the car to the local Cadillac dealership to complain about water intrusion in the left taillight that is in the liftgate. The service advisor created a repair order and sent me back saying it would take 10 days to arrive. Upon my specific inquiry, the advisor stated the car was safe to drive and assured me that I would not get a ticket. Since the event (5 days later) it was confirmed by the service advisor that the same water intrusion event lead to the electrical fire that burned a connector, a module, and multiple wiring components causing the fire. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11714212

Incident

Jan 11, 2026

At least 10 times over the past three months the vehicle’s feature of one pedal driving disengages without a reason or code. When the this happens the vehicle accelerates rapidly. This has happened on local streets and on the highway and often results in a near miss collision. I am concerned this will result in a serious injury or death.

NHTSA ID

11688578

Incident

Sep 11, 2025

Recall 252500680 GM claims closed and downloaded OTA. NO such download ever occured per my vehicle history as displayed. How many thousands of vehicles are being improperly closed without updating due to GM incompetance.

NHTSA ID

11674053

Incident

Jun 15, 2025

I was driving at a steady 65mph on a highway when the car suddenly surged and the message "1 pedal driving deactivated. Use brakes to stop." I stopped the car with the brakes and restarted it and reactivated 1 pedal driving. Note I was NOT using regenerative braking at the time. The car surged a few miles an hour, and in a heavy traffic scenario could have easily caused a crash.

NHTSA ID

11672285

Incident

Jul 9, 2025

Since a recent software update, vehicle will unexpectedly give multiple error codes, and disengage “one-pedal driving” mode. This happened recently when coming to a stop at a traffic light behind another vehicle. When coming to a gradual one-pedal stop, the one pedal driving mode unexpectedly disengaged, causing me to almost hit the vehicle in front of me. This error has occurred 5-6 times in the past 3 months.

NHTSA ID

11669107

Incident

Jun 18, 2025

Hi, this vehicle is owned by Surreal Development LLC. A company whom reverse engineers vehicle. GM has an issue in their Cadillac Lyriq's which causes a complete failure of the vehicle's communication systems without warning while driving. This issue appears to affect all Global B vehicles but it is most severe in vehicles with one pedal driving (Sierra EV, Lyriq, Blazer EV, Optiq, Silverado EV, Equinox EV, etc...) The error is likely within the vehicle's Serial Data Gateway Control Module but it is unclear. The vehicle recovers from the communication quickly (within seconds) but it causes long term adverse affects for that driving period. 1. The vehicle will light up with warnings (Service Traction Control, disengage super cruise, disengage ACC, etc...) 2. The driver's pedal will go into safety mode. 3. A "Service High Voltage" system warning may or may not appear. The safety concern is mostly in #2. When this happens it is very jarring to the driver as it drastically changes how the vehicle responds. While the vehicle may state one pedal driving is disabled many times it still indicates it is on within the controls (likely due to an error in the compounded communication fault). This can lead to the driver rear ending the vehicle in front of them or rolling over. The fault does not correct itself until the vehicle resets (powers off/on). The issue is common and affects many owners of the Cadillac Lyriq. The only diagnostic data we see are communication faults across many modules.

NHTSA ID

11668979

Incident

Jun 9, 2025

The contact owns a 2024 Cadillac Lyriq. The contact stated that upon engaging the drive mode of the vehicle, the vehicle unintendedly switched back to parking mode. The vehicle was towed to the dealer, where an unknown repair was performed, and the vehicle was repaired. Additionally, the dealer informed the contact that the VIN was included in NHTSA Campaign Number: 25V356000 (Equipment, Electrical System). The contact stated after the dealer performed the recall repair, the vehicle failed to restart. The dealer informed the contact that the manufacturer needed to provide additional remedy to correct the failure. The dealer referred the contact to the manufacturer for assistance. The manufacturer was contacted and referred the contact to the dealer for assistance. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 29,488. Parts distribution disconnect.

NHTSA ID

11668976

Incident

May 9, 2025

Mileage

29,488 mi

While driving my 2024 Cadillac Lyriq in rolling traffic, the vehicle abruptly engaged the brakes without warning or cause. The braking was so forceful I initially thought I had been rear-ended. Once the braking event ended, I began to accelerate—only to discover the vehicle had shifted into reverse without any input from me. This resulted in a rear-end collision. There were no alerts or dashboard warnings to indicate the gear change. I believe this may be related to a malfunction in the automatic emergency braking system or the shift-by-wire controller. This behavior presents a serious safety hazard and must be investigated. I have filed a report with Cadillac and will be taking the vehicle to a dealership for diagnostics and data log review.

NHTSA ID

11663564

Incident

May 28, 2025

This is an update to my original NHTSA complaint submitted on May 5, 2025 (complaint number 11658852), regarding a complete electrical failure in a 2024 Cadillac Lyriq. While parked in a garage, the vehicle experienced a full shutdown—rendering all systems inoperable, including the door locks and windows. Most alarmingly, a [XXX] child was trapped in the back seat due to the doors being electronically locked and unresponsive. The dealership has since diagnosed the failure as a cable routed improperly near the steering column that had rubbed against a component and snapped. This severed connection resulted in the complete loss of vehicle power and emergency functions. Since that time, I have discovered multiple similar reports from other Lyriq owners online describing full system shutdowns, locked doors, and failures to start—many of which are shared on public forums such as Reddit [XXX] ). This suggests that this may not be an isolated case but rather a potential systemic defect in the Lyriq's wiring harness design or electrical architecture. I am extremely concerned that this failure mode could occur while driving, particularly at highway speeds, and would result in loss of steering, braking assist, and emergency exit options. I urge the NHTSA to investigate this issue further to determine whether a recall or manufacturer communication is appropriate. This vehicle is currently with the dealership, and I have refused delivery until GM provides formal safety assurances. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11660828

Incident

May 3, 2025

The main driving display in my 2024 Cadillac Lyriq has faulty software or light sensor calibration - the vehicle automatically dims the screen (including the speedometer) to unreadably low levels, is extremely slow to respond to changing lighting conditions and time of day (the display changes between day and night modes automatically but is constantly confused by lighting conditions). This happens most often at dawn and dusk. I will be driving in bright sunlight with the sun glaring in my eyes, and the screen will think it's night and be dimmed way down to about 20% brightness. Customers have no way of overriding this. There is no setting to disable automatic brightness, and some customers have taken the time to manually unplug the daylight sensor on the dash to resolve their issue. Additionally, the system is extremely sensitive to going under overpasses, which will immediately dim the entire system to about 20% brightness and stay that way for a long time after returning to bright sunlight. This also happens when pulling into my garage, where the display dims down so low that I am unable to see the safety cameras around the vehicle in order to park my vehicle correctly. GM has been made aware of this issue, and they've been aware of it for years. I've spoken to GM directly, and they say, "a fix is coming," but it's been years and nothing has been done. They've issued multiple software updates, none of which address the problem so far. Subsequently released vehicles, like the Optiq, have this issue resolved. GM knows how to fix it, and that's an issue; they just do nothing about it. This is a very well-known, very widespread issue for other Lyriq owners. You can find chat chains on Reddit discussing this issue, and even one where multiple owners talk about starting a class action case on it as it involves vehicle safety. I'm attaching photos of what my display looks like when the sun is out in the morning. It displays the same behavior at dusk.

NHTSA ID

11660666

Incident

May 12, 2025

We were exiting a parking garage when the car suddenly slammed the brakes on in the path of traffic and lost all electrical power. We could not get the car to turn back on or even get it in neutral to move it out of the path of traffic. Our [XXX] old got locked in the car because the car had zero electric power and someone helped us figure out how to unlock the car with the physical key. We were stuck for four hours because no one could figure out how to get the car out of the garage. If this had happened going at a high speed this could have caused a deadly crash, and it happened without any warning. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11658852

Incident

May 3, 2025

When driving, the infotainment screen glitched. This also affected the main instrument cluster containing information like speed, and inhibited any ability to control certain functions like the headlights. While the infotainment screen was scrambled, this was not a perceived safety issue [except that cameras could not be seen] However, the main instrument cluster was concerning. Correct speed, gear position, blinkers, etc were not shown or delayed. [e.g. when going approx 30 mph, the cluster stated approx 15 mph]

NHTSA ID

11639172

Incident

Jan 28, 2025

AC compressor severe noise like a chopper.

NHTSA ID

11638934

Incident

Sep 10, 2024

The phone charging cradle, Bluetooth, wifi, and Radio are getting disconnected, repair made 3-4 times, and still the same problem, also dashboard screen getting dark or disconnected while driving the car. On 01/09 2025, 10 pm I connected to charge the battery and it didn't charge the whole night when I started the car, and heard a big bang like a bomb blew the electrical battery in my garage, thank god I didn't get injured or damage to my garage/home. I took the 5th time to the dealer and asked General Moror to buy back the car. I have filed a written complaint with BBB OF NEW JERSEY and Lemon Law. Thank god I wasn't driving the car on highway when the car battery blew up otherwise I would have or other people would have gotten injured or dead.

NHTSA ID

11635317

Incident

Jan 9, 2025

Vehicle dash won't activate beyond the welcome screen thereby preventing me from seeing the speedometer, fuel gage, lane sensors, navigation, etc. I had to drive it on side streets to the closest dealer without aid of any standard dash meters.

NHTSA ID

11632627

Incident

Dec 27, 2024

The vehicle's instrument panel automatically dims excessively at dusk and dawn. When it does this, the speedometer and other information in the dashboard are not visible. There is no way to adjust the brightness any higher and no way to disable this auto dim feature. This is, to my knowledge, a known software bug that has persisted for close to two years without any effort by GM to rectify this safety issue.

NHTSA ID

11630640

Incident

Dec 12, 2024

When approaching sunset, or when travelling under bridges, the dash dims excessively and is barely readable. I have to take my eyes off the road for extended periods of time to be able to see the information. The excessive dim does not reset itself, when the ambient lighting returns to normal, for a prolonged period of time. Complaints to the dealer service department, GM EV Concierge, and OnStar have not had any effect on resolving this. Tnis is an ongoing problem since delivery of the vehicle.

NHTSA ID

11630475

Incident

Feb 10, 2024