Cadillac Lyriq 2024 — technical service bulletin
Bulletin 661.50 · NHTSA communication 11033007 · issued Jun 3, 2026
Technical service bulletin
communication type
Exterior Lighting
component
2024
model years
1
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.