why does my Toyota Corolla E170 (2013-2019) have a problem with the brake lights not working

Toyota Corolla E170 (2013-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

critical

Severity

4 min read

620 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 diagnose and fix brake lights not working on Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Brake lights do not illuminate when the brake pedal is pressed.
•"Check brake system" warning light may be illuminated on the dashboard.
•Rear lights may be functioning normally (tail lights work).
•Potentially, the vehicle may not pass a safety inspection due to non-functioning brake lights.
•Driver may notice that other drivers are not responding to braking.

Diagnostic Steps

1
Check the brake light bulbs for any signs of burnout or damage.
2
Inspect the brake light fuse in the fuse box for failure.
3
Use a multimeter to test for voltage at the brake light socket when the pedal is pressed.
4
Verify the operation of the brake light switch located near the brake pedal.
5
Inspect wiring and connectors for any damage or corrosion.
6
Check for any stored trouble codes using an OBD-II scanner.

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
•Wire strippers
•Electrical tape
•Heat shrink tubing

Parts Required

•Brake light bulbs
•Brake light fuse (if blown)
•Brake light switch (if defective)

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Symptoms

•Brake lights do not illuminate when the brake pedal is pressed.

•"Check brake system" warning light may be illuminated on the dashboard.

•Rear lights may be functioning normally (tail lights work).

•Potentially, the vehicle may not pass a safety inspection due to non-functioning brake lights.

•Driver may notice that other drivers are not responding to braking.

Diagnostic Steps

1
Check the brake light bulbs for any signs of burnout or damage.
2
Inspect the brake light fuse in the fuse box for failure.
3
Use a multimeter to test for voltage at the brake light socket when the pedal is pressed.
4
Verify the operation of the brake light switch located near the brake pedal.
5
Inspect wiring and connectors for any damage or corrosion.
6
Check for any stored trouble codes using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts: socket set, multimeter, replacement bulbs, brake light switch (if needed), and fuses.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Disconnect the negative battery terminal to ensure safety.

2. Check and Replace Brake Light Bulbs

Sub-steps:
1. Open the trunk and locate the access panel for the brake light assembly.
2. Remove the access panel and take out the brake light bulb socket.
3. Inspect the bulb; if it is burnt out, replace it with a new bulb of the same type.
4. Reinsert the bulb socket and replace the access panel.
Tools Required: Socket set.

3. Inspect and Replace Fuse

Sub-steps:
1. Locate the fuse box (usually under the dashboard or in the engine compartment).
2. Identify the brake light fuse using the diagram on the fuse box cover.
3. Remove the fuse and check if the filament is broken; if so, replace it with a fuse of the same amperage.
Tools Required: Fuse puller or pliers.

4. Test and Replace Brake Light Switch

Sub-steps:
1. Locate the brake light switch mounted on the brake pedal assembly.
2. Disconnect the switch connector and use a multimeter to test for continuity when the pedal is pressed.
3. If there is no continuity, remove the old switch and replace it with a new one.
4. Reconnect the switch and ensure it is adjusted properly to engage when the pedal is pressed.
Tools Required: Socket set, multimeter.

5. Inspect Wiring and Connectors

Sub-steps:
1. Visually inspect the wiring leading to the brake light assembly for any signs of wear, damage, or corrosion.
2. Repair any damaged wiring or replace connectors as needed.
3. Ensure all connections are secure and free of moisture.
Tools Required: Wire strippers, electrical tape, or heat shrink tubing.