Cadillac CTS blind spot sensor light remains illuminated on both mirrors on Cadillac CTS

Some Cadillac CTS owners report experiencing issues with the blind spot sensor light remaining illuminated on both mirrors, which can raise safety concerns while driving. This problem may stem from faulty mirror sensors or a malfunctioning blind spot control module, leading to continuous sensor light activation. Additionally, some owners identify wiring issues, such as a short circuit between the module and mirror, as a potential cause for the persistent indicator. Water penetration into the sensor seal has also been reported, resulting in sensor failure and the illumination of a "service side detection system" message. To address these concerns, owners are encouraged to adjust their side mirrors for better visibility and familiarize themselves with the blind spot warning system's functionality. If these measures do not rectify the issue, consulting a professional mechanic or authorized Cadillac service center for a thorough diagnosis is recommended.