# 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.

- Type: Over\-the\-air update
- NHTSA id: 11033007
- Published by NHTSA: 2026\-05\-29
- Manufacturer's number: 661.50
- Manufacturer's date: 2026\-06\-03
- Campaign id or software version: 661.50
- NHTSA component: EXTERIOR LIGHTING; UNKNOWN OR OTHER
- Manufacturer's system: BCM: 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033007-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033007-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Lighting

## Vehicles listed

- 2024 CADILLAC LYRIQ

## Recalls for the same vehicles and component

- [2025293](/recalls/tc/2025293.md), 2025-05-29: Lights And Instruments
- [2024060](/recalls/tc/2024060.md), 2024-02-01: Lights And Instruments

## Other bulletins for the same vehicles and component

- [01\-08\-42\-001Q](/bulletins/11014170.md), 2025-02-11, Service bulletin: EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
- [22\-NA\-244](/bulletins/11000550.md), 2024-05-30, Warranty extension: ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [N232422480](/bulletins/10251884.md), 2024-03-18, Service bulletin: EXTERIOR LIGHTING. 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\-001J](/bulletins/10249011.md), 2024-01-19, Service bulletin: EXTERIOR LIGHTING. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
- [21\-NA\-135](/bulletins/10245559.md), 2023-11-29, Service bulletin: ENGINE AND ENGINE COOLING; EQUIPMENT; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

JSON: [/v1/bulletins/11033007](/v1/bulletins/11033007)

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