Cadillac LYRIQ Dead Battery Issue (Short)

We are investigating potential issues with 2023–2024 Cadillac LYRIQ vehicles relating to 12-volt battery drain and electrical system activity. If your vehicle is affected, you can contact us confidentially and free of charge. No lawsuit has been filed, and no class proceeding has been certified.

Cadillac LYRIQ 12V Battery Drain Investigation (Detailed)

Our firm is reviewing potential issues affecting 2023–2024 Cadillac LYRIQ vehicles relating to 12-volt battery depletion, electrical system behavior, and vehicle functionality. If you have experienced dead battery events, loss of vehicle function, or related electrical issues, you may contact us confidentially and free of charge. No lawsuit has been filed, and no class proceeding has been certified.

Potential Automotive Class Proceeding Under Investigation:
Cadillac LYRIQ 12V Battery Drain and Electrical System Issues (Main)

Our firm is currently investigating a potential class proceeding in British Columbia concerning 2023–2024 Cadillac LYRIQ vehicles and reported issues affecting the vehicles’ 12-volt battery systems and electronic control architecture.

We have examined reports of vehicle owners indicating that their vehicles experience unexpected 12-volt battery depletion, including situations where the vehicle will not start, lose functionality, or exhibits failure of key electronic features such as passive entry or key fob operation.

Our investigation focuses on concerns relating to the vehicle’s electrical system design and software control, including the operation of the Serial Data Gateway Module and related systems. Based on available technical information, it is understood that certain modules may remain active or draw power even when the vehicle is in an “OFF” state, including during post-shutdown support cycles and periodic battery monitoring events.

In particular, it is our preliminary understanding that a software anomaly and/or communication error within the vehicle’s electronic systems may cause the Serial Data Gateway Module to generate a parasitic electrical draw, resulting in a discharged or dead 12-volt battery.

Technical materials further indicate that the vehicle’s electrical architecture may continue to support 12-volt loads after shutdown and may periodically reactivate to monitor battery state of charge, which, in certain circumstances, may contribute to unintended battery depletion.

It is our understanding that the manufacturer has proposed a remedy consisting primarily of software reprogramming of the Serial Data Gateway Module, along with battery charging or replacement procedures. Based on the information reviewed to date, this approach may not address the underlying design or system-level issues contributing to the alleged parasitic draw.

While no Notice of Civil Claim has been filed and no class proceeding has been certified, our preliminary assessment is that the issues may be systemic in nature and may affect multiple vehicles within the proposed class.

This investigation is ongoing and is being conducted to determine whether the legal requirements under British Columbia’s Class Proceedings Act are met, including whether common issues exist and whether a class proceeding would be the preferable procedure.

If you own or lease a 2023–2024 Cadillac LYRIQ and have experienced issues with battery failure, loss of vehicle functionality, electrical irregularities, or repeated service visits, you may contact our firm to share your experience. Providing information is confidential, free of charge, and does not obligate you to retain our firm or participate in any legal proceeding.

This page will be updated as our investigation progresses.

This webpage is provided for informational purposes only and does not constitute legal advice.

Frequently Asked Questions – Cadillac LYRIQ 12V Battery Drain Investigation

What is the issue being investigated?
Our firm is reviewing reports that certain 2023–2024 Cadillac LYRIQ vehicles may experience unexpected 12-volt battery depletion. The investigation focuses on potential electrical system and software-related issues, including parasitic battery draw associated with vehicle modules that may remain active after shutdown.

Has a class proceeding been filed?
No. At this time, our firm is only conducting a preliminary investigation. No Notice of Civil Claim has been filed and no class proceeding has been certified in British Columbia.

What does “certification” mean?
Certification is a procedural step where the Supreme Court of British Columbia decides whether a lawsuit may proceed as a class proceeding. It addresses issues such as commonality and procedural suitability, not liability or damages.

Who could be included if a class proceeding is filed?
If a class proceeding is filed and certified, the court will define the class, typically based on vehicle model, model year, and other objective criteria. This has not yet been determined.

What remedy is being proposed by the manufacturer?
Based on available information, the manufacturer has proposed a remedy involving battery charging or replacement and software reprogramming of the Serial Data Gateway Module. We are investigating whether this approach adequately addresses the underlying issue.

Is this a safety issue?
We are investigating whether the alleged defect may affect vehicle reliability and functionality, including the ability to start or operate the vehicle. No conclusions have been reached at this stage.

How can I provide information to the firm?
If you own or lease a 2023–2024 Cadillac LYRIQ and have experienced battery or electrical issues, you may contact our firm to share your experience. This is confidential and free of charge.

Will I automatically be part of a class proceeding if one is certified?
If a class proceeding is certified, individuals falling within the class definition are typically included automatically unless they opt out, subject to the court’s order.