Brake switch malfunction: The brake switch, which is triggered when the brake pedal is pressed, may be stuck or faulty, causing the brake lights to remain illuminated.
Faulty bulbs: In rare cases, faulty bulbs or incompatible replacements can cause issues with the brake light circuit, leading to constant illumination. However, since two lights are being affected, it makes other potential causes more likely
Incorrect installation: If recent work or modifications have been performed on the electrical system or taillight assembly, there may be an incorrect connection or improper installation causing the problem.
*It's advisable to have a professional auto electrician or mechanic check and diagnose the issue to ensure proper repair.*