{"nhtsa_id":11031821,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-05-01","date":"2026-04-28","document_id":"661.20","mfr_campaign":"661.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"CGM, AMP, AOS, EBCM, BCM, LRR, FCM, SRR, SBZA: CGM, AMP, AOS, EBCM, BCM, LRR, FCM, SRR, SBZA","summary":"• Improvements to interior audio quality and volume consistency. • Improves traction and stability control when accelerating or on uneven terrain. • Improves braking and stopping performance on low-traction surfaces. • Fixes for active cabin ventilation. • Fixes to help ensure proper functionality for heating and cooling features. • Improvements to night mode lights for shifting gears. • Fixes for Daytime Running Lamps turning on when set to Off. • Fixes for speed threshold for pedestrian alerts. • Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features. • Fixes to help protect battery life. • Improvements to provide more accurate speed limit detection on the driver’s display. • Fixes to help ensure driver assistance features remain functional when the windshield freezes. • Fixes to help ensure accurate driver display messages and alerts.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031821-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031821-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031821","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"LYRIQ","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_cadillac_lyriq"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}