how to fix the dashboard lights not working on my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

584 words

Problem Statement

Learn how to diagnose and fix dashboard lights not working in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow the vehicle to cool before accessing the dashboard components.

Symptoms

•Dashboard lights completely off
•Instrument cluster gauge lights not illuminating
•Warning lights may not be visible
•Difficulty reading speedometer and fuel gauge at night
•Potential flickering of lights when adjusting brightness

Diagnostic Steps

1
Check the vehicle's fuse box for a blown fuse related to the dashboard lights.
2
Inspect the dimmer switch to ensure it is functioning properly.
3
Scan for error codes using an OBD-II scanner to check for any electrical system issues.
4
Verify the condition of the dashboard light bulbs by removing the cluster assembly.
5
Inspect wiring connections for corrosion or damage behind the dashboard.

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

•Socket set
•Trim removal tools
•OBD-II scanner
•Fuse puller

Parts Required

•Replacement light bulbs (specific type depending on the model)
•Replacement dimmer switch (if necessary)
•Fuses of appropriate amperage

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Diagnostic Steps

1
Check the vehicle's fuse box for a blown fuse related to the dashboard lights.
2
Inspect the dimmer switch to ensure it is functioning properly.
3
Scan for error codes using an OBD-II scanner to check for any electrical system issues.
4
Verify the condition of the dashboard light bulbs by removing the cluster assembly.
5
Inspect wiring connections for corrosion or damage behind the dashboard.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Tools Required: Socket set, trim removal tools, OBD-II scanner.

2. Check and Replace Fuses

Locate the fuse box, typically found under the dashboard or in the engine compartment.
Using a fuse puller or pliers, remove the fuse for the dashboard lights (check the owner's manual for the specific fuse location).
Inspect the fuse; if it is blown (metal strip inside is broken), replace it with a new fuse of the same amperage.
Reconnect the fuse and battery terminal, then test the dashboard lights.

3. Inspect and Adjust Dimmer Switch

Locate the dimmer switch on the dashboard (often near the headlight controls).
Rotate the dimmer switch to see if the lights brighten or illuminate.
If the switch feels loose or does not respond, consider replacing it by removing the trim panel and disconnecting the wiring harness.

4. Remove Dashboard Cluster

Use trim removal tools to carefully detach the dashboard trim covering the instrument cluster.
Remove screws or bolts securing the instrument cluster to the dashboard.
Gently pull the cluster toward you to expose the wiring harness at the back.
Disconnect the harness to access the light bulbs.

5. Replace Dashboard Light Bulbs

Inspect the light bulbs for burnouts; replace any faulty bulbs by twisting counterclockwise and pulling them out.
Insert new bulbs into the sockets, ensuring they are properly seated.
Reconnect the wiring harness and secure the instrument cluster back into place.

6. Reassemble and Test

Reattach the dashboard trim by pressing it back into place.
Reconnect the negative battery terminal.
Start the vehicle and check if the dashboard lights are functioning properly.