Over-the-air update 654.50
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 | 11027911 |
| Published by NHTSA | 2026-02-01 |
| Manufacturer's number | 654.50 |
| Manufacturer's date | 2026-01-16 |
| Campaign id or software version | 654.50 |
| NHTSA component | UNKNOWN OR OTHER |
| Manufacturer's system | BCM, AMP, SRR: BCM (Body Control Module), AMP (Amplifier), SRR (Short Range Radar) |
NHTSA's summary
• 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. • 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 accurate driver display messages and alerts.
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 | 2026 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.