If your tail lights are not functioning properly, you can take the following steps:n1. Check the bulbs: Ensure that the bulbs are not burnt out or loose. Replace any faulty bulbs.n2. Inspect the wiring: Examine the wiring connections and check for any damage or loose connections. Repair or replace as necessary.n3. Check the fuse: Verify if the fuse related to the tail lights is intact. Replace if needed.n4. Consult a professional: If the issue persists or you are unsure about the troubleshooting steps, it is recommended to consult a professional mechanic or technician for proper diagnosis and repair.