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

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

569 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 the burning smell issue in your 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms, diagnostics, and solutions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the engine to cool before working on it to prevent burns.
•Disconnect the battery before performing any electrical work.

Symptoms

•Burning smell noticeable after driving
•Smoke rising from under the hood
•Engine temperature gauge reading higher than normal
•Fluid spots under the vehicle (oil, coolant, etc.)
•Unusual noises from the engine bay (e.g., grinding, hissing)

Diagnostic Steps

1
Check for any warning lights on the dashboard, particularly the temperature or oil pressure lights.
2
Inspect the engine oil level and condition using the dipstick; look for signs of contamination or burnt smell.
3
Examine coolant levels in the reservoir and radiator; check for leaks or discoloration.
4
Perform a visual inspection of belts and hoses for signs of wear, damage, or leaks.
5
Use an infrared thermometer to measure engine temperature at various points (radiator, oil pan, etc.) to identify potential hotspots.
6
Check for any foreign objects that may be in contact with hot engine components.

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
•Oil filter wrench
•Socket set
•Torque wrench
•Infrared thermometer
•Coolant pressure tester (optional)

Parts Required

•Engine oil (5W-20 or as specified)
•Oil filter
•Coolant (50/50 mixture)
•Belts and hoses as necessary

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Diagnostic Steps

1
Check for any warning lights on the dashboard, particularly the temperature or oil pressure lights.
2
Inspect the engine oil level and condition using the dipstick; look for signs of contamination or burnt smell.
3
Examine coolant levels in the reservoir and radiator; check for leaks or discoloration.
4
Perform a visual inspection of belts and hoses for signs of wear, damage, or leaks.
5
Use an infrared thermometer to measure engine temperature at various points (radiator, oil pan, etc.) to identify potential hotspots.
6
Check for any foreign objects that may be in contact with hot engine components.

Solution

1. Preparation

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

2. Check and Replace Engine Oil

Sub-steps:
- Remove the oil drain plug and drain old oil into a pan.
- Replace the oil filter using an oil filter wrench.
- Install a new oil filter, ensuring the rubber O-ring is lubricated and seated properly.
- Reinstall the drain plug with a torque of 25-30 ft-lbs.
- Fill the engine with the appropriate grade of oil (5W-20 or as specified) through the oil filler cap.

3. Inspect and Refill Coolant

Sub-steps:
- Check the coolant reservoir for proper levels; add a 50/50 mixture of coolant and distilled water if low.
- Inspect the radiator for leaks or damage; replace if necessary.
- Bleed the cooling system to remove any air pockets by running the engine with the radiator cap off until the thermostat opens.

4. Replace Damaged Belts and Hoses

Sub-steps:
- Visually inspect all belts for fraying or cracks; replace if damaged.
- Check hoses for signs of wear or leaks and replace as needed.
- Use a torque wrench to ensure all clamps are tightened to specifications.