1. Brake Light Switch: Ensure the brake light switch is functioning properly. You can test this by pressing the brake pedal and examining if the brake lights turn on. If they don't, the brake light switch might need to be replaced.
2. Electrical Connections: Check the electrical connections between the brake light bulbs and the vehicle's electrical system. Make sure the connectors are free of corrosion, dirt, or damage, and that they are properly secured.
3. Faulty Wiring: Inspect the wiring harness that connects the brake lights to the vehicle's electrical system for any cuts, breaks, or damage. If there is any damage, it will need to be repaired or replaced.
4. Brake Light Relay: Some Renault Megane Scenic models have a brake light relay that can fail, causing the brake lights to stop working. Check the location of the relay and make sure it is properly installed and functioning correctly.
5. Central Electric Module (CEM): The CEM is an electronic control unit in Renault vehicles that can control various electrical components, including the brake lights. If the CEM is damaged or malfunctioning, it could affect the brake light functionality.
If you have checked all these components and the brake lights are still not working, it's recommended to seek assistance from a qualified automotive electrician or mechanic. They will have the appropriate diagnostic tools and expertise to accurately diagnose and fix the issue.
