my Toyota Corolla E170 (2013-2019) has no power to the rear lights, what could be wrong?

Toyota Corolla E170 (2013-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

418 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shorts or shocks.

Symptoms

•Rear lights do not illuminate when headlights are turned on
•No response from brake lights when pedal is pressed
•No illumination from turn signals at the rear
•Possible blown fuses related to rear lighting circuit
•Dashboard warning indicator for lights may be illuminated

Diagnostic Steps

1
Inspect rear light bulbs for any signs of burnout or damage.
2
Check the fuse box for blown fuses related to the rear lighting circuit.
3
Use a multimeter to test for voltage at the rear light sockets.
4
Inspect wiring harness for any frayed or damaged wires.
5
Test the rear light switch for proper operation.
6
Verify ground connections for rear lights are secure and free from corrosion.

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
•Multimeter
•Fuse puller or pliers
•Electrical tape

Parts Required

•Rear light bulbs (if burnt out)
•Replacement fuses (if blown)

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Diagnostic Steps

1
Inspect rear light bulbs for any signs of burnout or damage.
2
Check the fuse box for blown fuses related to the rear lighting circuit.
3
Use a multimeter to test for voltage at the rear light sockets.
4
Inspect wiring harness for any frayed or damaged wires.
5
Test the rear light switch for proper operation.
6
Verify ground connections for rear lights are secure and free from corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Bulbs

Open the trunk and remove the rear light assembly cover.
Remove the old bulbs by twisting them counterclockwise and pulling them out.
Insert new bulbs into the socket and twist them clockwise to secure.

3. Check and Replace Fuses

Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the fuse for the rear lights using the diagram on the fuse box cover.
Remove the fuse using a fuse puller or pliers.
Inspect the fuse; if it is blown (the metal strip inside is broken), replace it with a fuse of the same amperage.

4. Repair Wiring Issues

Inspect the wiring harness leading to the rear lights for any visible damage.
If any wires are frayed or broken, use electrical tape to secure minor damage or replace the affected sections with new wire.
Ensure all connections are tight and secure.

5. Test Ground Connections

Locate the ground connection point for the rear lights.
Ensure that the ground wire is securely attached to the chassis and free of corrosion.
Clean the connection if necessary and tighten.

Tools Required:

Socket set
Multimeter
Fuse puller or pliers
Electrical tape

Parts Required:

Rear light bulbs (if burnt out)
Replacement fuses (if blown)

Estimated Repair Time: 1-2 hours

Safety Warnings:

Disconnect the battery before working on electrical systems to prevent shorts or shocks.