Faulty Wiring: There may be a problem with the wiring that supplies power to the cigarette lighter. Inspect the wiring for any damage or loose connections, especially around the cigarette lighter socket itself. If you find any issues, it may be necessary to repair or replace the faulty wiring.
Broken Cigarette Lighter Socket: The cigarette lighter socket itself could be damaged or loose, causing it to stop working. Try plugging in a different device or accessory into the socket to see if it powers on. If other devices work, the problem might lie with the cigarette lighter itself. You may need to replace the socket.
Alternator Issues: If the alternator, which recharges the vehicle's battery, is malfunctioning, it could affect the power supply to various electrical components, including the cigarette lighter. Have the alternator tested by a qualified mechanic to rule out this possibility.
Defective Cigarette Lighter Mechanism: In some cases, the internal mechanism of the cigarette lighter could be faulty or damaged, preventing it from working properly. If you've eliminated all other potential causes, it's worth considering the possibility of a defective lighter mechanism.
If you lack experience with electrical repairs, it's generally recommended to consult with a qualified mechanic to diagnose the exact issue and perform any necessary repairs.