BMW 540i xDrive right rear brake, tail, and blinker malfunction with intermittent reset issue on BMW 540i xDrive

Some BMW 540i xDrive owners report experiencing issues with the right rear brake, tail, and blinker, which can manifest as error messages like "Right brake lamp malfunction" or "right rear signal light malfunction." These malfunctions may be linked to faulty components, such as the circuit board in the tail light assembly. Initially, the problems can be intermittent but may worsen, potentially affecting other lights like taillights, brake lights, and backup lights due to wiring harness connector issues. Repairs often involve replacing the rear lights' wiring harness connectors and reprogramming the software afterward. It is crucial for owners to address these malfunctions promptly, as a malfunctioning brake system can pose serious safety risks and impact the vehicle's overall performance.