1. Light Switch Position: Make sure the headlight switch is set to the correct position. Some Toyota Echo models have a rotary headlight switch, while others have a combination headlight and parking light switch. Ensure that the switch is turned to the headlight position.
2. Headlight Fuse: Check the headlight fuse, usually located in the fuse box. A blown fuse could interrupt power to the headlights. Refer to your Toyota Echo's owner's manual for the location of the fuse box and specific fuse arrangement.
3. Headlight Relay: Similar to fuses, relays can also fail, leading to electrical issues like non-functioning headlights. The headlight relay is usually located in the fuse box or near the front of the vehicle.
4. Headlight Bulbs: Over time, headlight bulbs can burn out and need to be replaced. Check the condition of the headlight bulbs; they should be clear and not have blackened interiors. If there are any issues, consider replacing the bulbs with OE (original equipment) replacements.
5. Headlight Socket or Wiring: Ensure there's a proper connection between the headlight sockets and the bulbs. Any loose connections or worn-out sockets can prevent power from reaching the headlight bulbs. If the wiring connection seems damaged or corroded, have it checked and repaired by a qualified auto electrician.
6. Headlight Switch: The headlight switch itself could be faulty. In this case, replacing the switch might be necessary.
If you have followed these steps and still can't locate the source of the issue, it's recommended to take your car to a trusted mechanic or automotive electrician for further diagnostics and repairs.
Remember, if your main headlights aren't working while driving at night, you compromise your visibility and create risks while on the road. Timely attention to headlight problems is crucial for safe driving.