Buick Rainier ABS and brake lights on dashboard always illuminated with slow battery drain on Buick Rainier

Some Buick Rainier owners report experiencing issues with both the ABS and brake lights constantly illuminated on the dashboard, which may be linked to several underlying problems. These owners have noted that a poor ground connection between the engine and the ABS module can trigger the ABS light and contribute to the brake light's illumination. Additionally, low battery voltage has been reported to cause similar dashboard alerts and slow battery drain, necessitating battery replacement or recharging. Problems within the brake system itself, including faulty components or leaks, can also lead to the persistent lighting of the brake indicator, potentially affecting the ABS system. Furthermore, electrical issues such as loose connections, damaged wires, or corrosion on battery terminals have been identified as factors that disrupt current flow and exacerbate battery drain. It is advisable for owners experiencing these symptoms to consult a qualified mechanic or dealership for a thorough inspection and necessary repairs to ensure the vehicle functions properly.