Faulty switch or dimmer: If your vehicle has a dashboard light switch or dimmer, it could be defective. Try turning the switch or dimmer on and off a few times to see if the lights respond. If they don't, the switch or dimmer may need to be replaced.
Wiring problems: If the bulbs, fuses, and connections all seem to be in order, the problem could be with the wiring itself. Faulty or damaged wires can prevent power from reaching the dashboard lights. This is more complex issue to diagnose and repair, and may require professional assistance.
Relay issues: Some vehicles use relays to control the flow of electricity to dashboard lights. If the relay fails or becomes faulty, it can interrupt power supply to the lights, causing them to go out. Check the relay associated with the dashboard lights and replace it if necessary.
