{"nhtsa_id":11027909,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-02-01","date":"2026-01-16","document_id":"654.20","mfr_campaign":"654.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"AOS, LRR, EBCM, AMP: AOS (Automatic Occupant Sensing Module), LRR (Long Range Radar), EBCM (Electronic Brake Control Module), AMP (Amplifier)","summary":"• Fixes to help ensure successful vehicle software updates. • 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. • Improvements to the performance of electric vehicle sound enhancement. • Fixes to help prevent loss of functionality for Dolby Atmos. • Fixes to ensure proper audio options display in menu. • Fixes to help ensure proper traction control activation.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11027909-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11027909-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11027909","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"LYRIQ","year_from":2023,"year_to":2023,"match":"exact","vehicle_ids":["2023_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":[]}