Over-the-air update 654.20
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.
| Type | Over-the-air update |
|---|---|
| NHTSA id | 11027909 |
| Published by NHTSA | 2026-02-01 |
| Manufacturer's number | 654.20 |
| Manufacturer's date | 2026-01-16 |
| Campaign id or software version | 654.20 |
| NHTSA component | UNKNOWN OR OTHER |
| Manufacturer's system | AOS, LRR, EBCM, AMP: AOS (Automatic Occupant Sensing Module), LRR (Long Range Radar), EBCM (Electronic Brake Control Module), AMP (Amplifier) |
NHTSA's 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.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
| CADILLAC LYRIQ | 2023 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.