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

554 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 a burning smell in your Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

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 the cooling system.

Symptoms

•Burning smell, possibly resembling burning rubber or oil
•Smoke rising from under the hood or around the wheels
•Engine overheating warning light illuminated
•Reduced engine performance or power loss
•Unusual noises from the engine bay or wheels

Diagnostic Steps

1
Inspect the engine bay for any visible signs of leaks or damaged components.
2
Check the engine oil level and condition; look for burnt oil.
3
Examine the coolant level and inspect for signs of leakage or overheating.
4
Inspect the brake components for wear, particularly the brake pads and rotors.
5
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to engine or transmission issues.
6
Test the electrical system for any overheating wires or connections.

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
•Socket set
•Torque wrench
•Brake tool kit
•Oil filter wrench
•Multimeter

Parts Required

•Engine oil (5W-20)
•Oil filter
•Brake pads
•Coolant (if necessary)
•Electrical connectors (if any wires are damaged)

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Diagnostic Steps

1
Inspect the engine bay for any visible signs of leaks or damaged components.
2
Check the engine oil level and condition; look for burnt oil.
3
Examine the coolant level and inspect for signs of leakage or overheating.
4
Inspect the brake components for wear, particularly the brake pads and rotors.
5
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to engine or transmission issues.
6
Test the electrical system for any overheating wires or connections.

Solution

1. Preparation

Gather tools and parts required.
Ensure the vehicle is parked on a flat surface and the engine is cool.
Disconnect the battery to prevent electrical shorts during repairs.

2. Inspect and Repair Engine Components

Sub-steps:
1. Check for Oil Leaks:
  - Inspect oil filter and drain plug for leaks; replace any faulty gaskets or seals.
2. Change Engine Oil:
  - If oil is burnt, drain the old oil and replace with manufacturer-recommended oil (5W-20).
  - Replace the oil filter.
3. Inspect Cooling System:
  - Check for leaks in hoses and the radiator; replace any damaged parts.
  - Ensure the coolant is at the proper level and replace if necessary.

3. Brake Inspection and Replacement

Sub-steps:
1. Visual Inspection:
  - Remove the wheel to inspect brake pads and rotors for excessive wear.
2. Replace Brake Pads:
  - If worn, remove the caliper and replace the brake pads with OEM parts.
  - Ensure to apply brake grease on the backing plate to prevent squeaking.
3. Reassemble:
  - Reattach the wheel and torque to manufacturer specifications (usually around 76 ft-lbs).

4. Electrical System Check

Sub-steps:
1. Inspect Wiring Harness:
  - Look for melted or frayed wires, especially near the engine and battery.
2. Replace Damaged Wires:
  - Cut and splice any damaged wires, using appropriate connectors.
3. Reconnect Battery:
  - Reconnect the battery and ensure all electrical connections are secure.