Why is the interior light of the Regal always on?

2 Answers
Coleman
07/24/25 8:24pm
If the interior light of the Regal stays on, it may be set to the always-on mode. Here is an introduction to the Buick Regal: 1. Overview of the Buick Regal: As one of the most successful strategic models of the Buick brand, the Regal has gained widespread popularity among users due to its trendy, dynamic, and tech-savvy product image and comprehensive technical capabilities. The Buick Regal incorporates General Motors' global advanced technologies, inheriting traditional strengths while meeting the ever-increasing demands of consumers in the new era. It brings a renewed driving experience with innovative product capabilities, achieving further evolution in dynamic styling, ride quality, and technological features. 2. Powertrain of the Buick Regal: The new Buick Regal offers two drivetrain options, combining advanced technology with high durability. It balances performance and fuel efficiency while precisely meeting the diverse needs of users with different powertrain combinations.
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McElliana
08/11/25 11:07am
My Regal also experienced this situation before, and there are usually several common causes to check: The most common reason is doors not being closed tightly - try firmly shutting each door again. If the switch is set to the constant-on position, simply toggle the switch near the light housing to turn it off. It could also be a faulty door sensor, which requires diagnostic computer testing at a 4S shop to confirm. Additionally, a short circuit in the dome light wiring can cause constant illumination, especially common in vehicles with modified wiring. Don't forget to check if the trunk lid is properly closed, as its sensor malfunction can also affect interior lighting. If none of these solutions work, I recommend visiting a professional auto repair shop for comprehensive circuit inspection, since keeping lights constantly on drains the battery significantly.
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