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Over-the-air update 661.50

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11033007
Published by NHTSA2026-05-29
Manufacturer's number661.50
Manufacturer's date2026-06-03
Campaign id or software version661.50
NHTSA componentEXTERIOR LIGHTING; UNKNOWN OR OTHER
Manufacturer's systemBCM: BCM (Body Control Module)

NHTSA's summary

• The Ambient Lighting feature will now save your selection instead of resetting to white after each drive. • The active cabin ventilation feature will operate more reliably. • Additional protection for the health of your battery and updates to help prevent excessive battery drain and overheating. • Improvements will support successful software updates for your vehicle and allow you to access new features and fixes.

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.

Components

Lighting

Vehicles listed
CADILLAC LYRIQ2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20252932025-05-29. Lights And Instruments
20240602024-02-01. Lights And Instruments

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
01-08-42-001Q2025-02-11. Service bulletin. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
22-NA-2442024-05-30. Warranty extension. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
N2324224802024-03-18. Service bulletin. Service Update: Certain vehicles may have a condition in which the headlamps’ aim may drift high or low during a drive compared to the initial aim at key-on. Dealers are to reprogram the Headlamp Control Module.
02-08-42-001J2024-01-19. Service bulletin. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
21-NA-1352023-11-29. Service bulletin. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.