why does my Toyota Corolla E170 (2013-2019) have a burning smell when driving

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

579 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 to diagnose and fix the burning smell issue in your Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before inspecting or working on components.

Symptoms

•Burning smell noticeable inside or outside the vehicle
•Reduced braking effectiveness (if related to brakes)
•Smoke visible from under the hood or near the wheels
•Warning lights illuminated on the dashboard (e.g., check engine light)
•Unusual noises from the engine or brakes

Diagnostic Steps

1
Inspect for visible smoke or fluid leaks under the hood or near the wheels.
2
Check brake pads and rotors for excessive wear or overheating.
3
Scan the vehicle’s OBD-II system for error codes.
4
Inspect engine oil levels and condition.
5
Check for any loose or damaged wiring or components that may be overheating.
6
Examine the exhaust system for signs of leaks or blockage.

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

•Jack and jack stands
•Socket set
•Torque wrench
•Brake cleaner
•OBD-II scanner
•Multimeter
•Basic hand tools

Parts Required

•Brake pads
•Brake rotors
•Engine oil (if low)
•Coolant (if low)

Related Faults

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Diagnostic Steps

1
Inspect for visible smoke or fluid leaks under the hood or near the wheels.
2
Check brake pads and rotors for excessive wear or overheating.
3
Scan the vehicle’s OBD-II system for error codes.
4
Inspect engine oil levels and condition.
5
Check for any loose or damaged wiring or components that may be overheating.
6
Examine the exhaust system for signs of leaks or blockage.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Brake Components (if applicable)

Tools Required: Jack and jack stands, socket set, torque wrench, brake cleaner, and new brake pads/rotors if needed.
Sub-steps:
1. Lift the vehicle using a jack and secure it with jack stands.
2. Remove the wheel to access the brake assembly.
3. Inspect brake pads for thickness; if less than 3mm, replace them.
4. Check rotors for warping or scoring; replace if necessary.
5. Clean the brake components with brake cleaner.
6. Reassemble the brake assembly and wheel, ensuring proper torque specifications (typically 76-100 lb-ft for lug nuts).

3. Inspect Engine and Fluid Levels

Tools Required: OBD-II scanner, multimeter, and basic hand tools.
Sub-steps:
1. Use the OBD-II scanner to check for any engine fault codes and address any identified issues.
2. Inspect engine oil levels; add oil if low and check for signs of burning (dark color or burnt smell).
3. Check the condition of the coolant and other fluids to ensure they are at appropriate levels and not leaking.
4. Inspect for damaged wiring or components that could be causing overheating, repairing or replacing as necessary.

4. Check Exhaust System

Tools Required: Jack and jack stands, socket set.
Sub-steps:
1. Lift the vehicle and inspect the exhaust system for any leaks, particularly at joints and connections.
2. Look for signs of rust or damage on the exhaust pipes.
3. If a leak or damage is found, repair or replace the affected components.