how to troubleshoot the headlights not working on my Toyota Camry XV70 (2018-2024)

Toyota Camry XV80 (2025-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

639 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix headlights not working on Toyota Camry XV70 (2018-2024). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative battery terminal before working on electrical systems

Symptoms

•Headlights do not illuminate when switched on
•Dashboard warning light for headlights is illuminated
•No sound from the headlight relay clicking
•High beams may work while low beams do not
•Flickering or intermittent operation of the headlights
•Possible malfunction of daytime running lights

Diagnostic Steps

1
Inspect headlight bulbs for any signs of damage or burnout.
2
Check the headlight switch for proper operation and functionality.
3
Use an OBD-II scanner to check for any related fault codes.
4
Test the headlight relay by swapping it with a similar relay in the fuse box.
5
Inspect the fuses associated with the headlights for continuity.
6
Measure voltage at the headlight connector using a multimeter to ensure power supply.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Screwdriver set
•Relay puller or pliers
•Fuse puller or needle-nose pliers
•Gloves

Parts Required

•Headlight bulbs (if burnt out)
•Headlight relay (if faulty)
•Fuses (if blown)

Related Faults

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Symptoms

•Headlights do not illuminate when switched on

•Dashboard warning light for headlights is illuminated

•No sound from the headlight relay clicking

•High beams may work while low beams do not

•Flickering or intermittent operation of the headlights

•Possible malfunction of daytime running lights

Diagnostic Steps

1
Inspect headlight bulbs for any signs of damage or burnout.
2
Check the headlight switch for proper operation and functionality.
3
Use an OBD-II scanner to check for any related fault codes.
4
Test the headlight relay by swapping it with a similar relay in the fuse box.
5
Inspect the fuses associated with the headlights for continuity.
6
Measure voltage at the headlight connector using a multimeter to ensure power supply.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is turned off.
Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Bulbs

Remove the headlight assembly according to manufacturer instructions.
Inspect the bulbs for any signs of burnout; replace if necessary.
- Tools Required: Screwdriver set, gloves to prevent oil contamination.
- Sub-steps:
  1. Locate the headlight assembly screws and remove them.
  2. Pull the headlight assembly out of its housing.
  3. Twist the bulb socket counterclockwise to remove the bulb.
  4. Install the new bulb by reversing the removal process.

3. Check Headlight Switch

Test the headlight switch for electrical continuity.
- Tools Required: Multimeter.
- Sub-steps:
  1. Access the headlight switch by removing the steering column cover.
  2. Disconnect the switch connector.
  3. Measure continuity across the switch terminals while toggling the switch.

4. Inspect and Replace Relay

If the relay is faulty, replace it.
- Tools Required: Relay puller or pliers.
- Sub-steps:
  1. Locate the headlight relay within the fuse box.
  2. Carefully pull the relay out using the relay puller or pliers.
  3. Insert a new relay and ensure it clicks into place.

5. Check and Replace Fuses

Inspect the fuse for the headlights and replace if blown.
- Tools Required: Fuse puller or needle-nose pliers.
- Sub-steps:
  1. Locate the fuse box and remove the cover.
  2. Find the headlight fuse using the fuse diagram.
  3. Pull the fuse out and inspect it; replace with the same amperage if blown.

6. Voltage Testing

Confirm the presence of voltage at the headlight connector.
- Tools Required: Multimeter.
- Sub-steps:
  1. Reconnect the battery and turn on the headlights.
  2. Set the multimeter to measure DC voltage.
  3. Probe the headlight connector terminals to check for voltage; if none, trace back to the wiring and relay.