Several owners have written in to Cadillac Society to tell us about botched over-the-air (OTA) updates affecting the Cadillac Lyriq. What happens is that the vehicle’s infotainment system is “left hanging” after an OTA update, thereby draining the 12-volt battery in the process. The good news is there’s a fix, as the luxury marque recently released a new Customer Satisfaction Program to remedy the issue and prevent the Lyriq’s 12-volt system from going down as a result of the faulty OTA updates.
Tagged with bulletin number N232416980, this Customer Satisfaction Program applies to the 2023 and 2024 model year Cadillac Lyriq.
Cadillac notes that the 12-volt system drain issue is not related to the OTA updates themselves, but rather a glitch that may occur during these updates. The glitch in question can leave the system hanging, causing the vehicle to “stay awake”, thereby draining the 12-volt battery. The Customer Satisfaction Program states that certain units of the 2023 and 2024 Cadillac Lyriq are susceptible to having the 12-volt battery discharge almost completely, or may be at an increased risk of accelerated discharged.
To fix the issue, dealership technicians are instructed to disconnect and reconnect the 12-volt battery, then to reprogram the serial data gateway. It’s worth noting that Cadillac dealers who have met the EV Readiness Requirements are the only service centers capable of performing this service, and the technician must have successfully completed the required training.
Prior to this Customer Satisfaction Program, the luxury marque stated that it was aware of the 12-volt battery drain issue in the Cadillac Lyriq, and that it was investigating the problem.
“Our engineering team is working to learn more about and diagnose the issue to minimize any further potential impact to Lyriq customers,” a Cadillac spokesperson told Cadillac Society in a statement. “As part of regular vehicle care, Cadillac recommends Lyriq customers keep their vehicles charged to a minimum of 20 percent High Voltage state-of-charge (SOC) and plug their vehicles in to their home charging unit overnight to help maintain 12V battery health.”
We’ll bring you more details on the Cadillac Lyriq as soon as we get them. Until then, be sure to subscribe to Cadillac Society for Cadillac Lyriq news and to-the-minute Cadillac news coverage. We also invite you to join the latest discussions in our Cadillac forums and Cadillac Lyriq forum.
James Tranthem
Not only will the 12 volt battery be dead, but another device will not function – the key fob will not work! The 12 volt batteries are used to power the “fobs” and you are locked out of the Lyriq. When you take the “key” from the fob, there is no where on the doors to make the insertion; The only place is next to the rear license plate, which will allow you access to the rear tailgate. Then you will need to be an acrobat to crawl in and climb over the seat and open the front doors – just try that when you are older with a bad back! Very poor way to design a new model car! Then tow the new car (2023) to the dealership for the fix. Thank God my dealer is only 20 miles away from my home and very qualified to work on both IC and EV vehicles… and I was not 200 miles from home!
Mike Hoover
Is that Lyriq painted in the new color “deep sea metallic” Do you know when Cadillac will start spraying the new colors for the XT4? I’m waiting to order one.
Thanks, MH
fdashiell
Keep it plugged in overnight? THis seems strange. Always 100% SOC every day?
James Tranthem
Original gray with very light color interior – I try to charge 80% down to 20% – so, not over night. I am still concerned about my garage, when my car is plugged into my new outlet – 5 months old and only 6000 miles.