why does my Toyota Camry XV50 (2012-2017) have a burning smell when accelerating

Toyota Camry XV80 (2025-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

610 words

Problem Statement

Learn how to diagnose and fix the burning smell when accelerating in Toyota Camry XV50 (2012-2017). Step-by-step guide with symptoms, diagnostics, 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 opening any components related to the oil or cooling systems.

Symptoms

•Burning smell, particularly noticeable during acceleration
•Possible smoke or vapor from the engine compartment
•Engine overheating warning light illuminated
•Reduced engine performance or power loss
•Fluid leak spots underneath the vehicle

Diagnostic Steps

1
Inspect the engine oil level and condition using the dipstick.
2
Check for any visible fluid leaks around the engine, transmission, and undercarriage.
3
Scan for error codes using an OBD-II scanner to identify any fault codes.
4
Examine the condition of the serpentine belt and pulleys for signs of wear or damage.
5
Inspect the exhaust system for any signs of burnt oil or leaking fluids.
6
Check the transmission fluid level and condition if applicable.

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

•Wrench set
•OBD-II scanner
•Fluid catch pan
•Rags

Parts Required

•Engine oil (SAE 0W-20)
•Oil filter
•Serpentine belt
•Transmission fluid (if applicable)

Related Faults

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Diagnostic Steps

1
Inspect the engine oil level and condition using the dipstick.
2
Check for any visible fluid leaks around the engine, transmission, and undercarriage.
3
Scan for error codes using an OBD-II scanner to identify any fault codes.
4
Examine the condition of the serpentine belt and pulleys for signs of wear or damage.
5
Inspect the exhaust system for any signs of burnt oil or leaking fluids.
6
Check the transmission fluid level and condition if applicable.

Solution

1. Preparation

Tools Required: Wrench set, OBD-II scanner, fluid catch pan, rags.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery before starting any work on electrical components.

2. Check and Replace Engine Oil

Check the engine oil level using the dipstick.
If the oil is low, top off with the recommended oil type (SAE 0W-20 for this model).
If the oil appears burnt or contaminated, drain the old oil and replace it.
- Sub-steps:
  1. Place a fluid catch pan under the oil pan.
  2. Remove the oil drain plug using a wrench and allow the oil to drain completely.
  3. Replace the oil filter and ensure the O-ring is properly seated.
  4. Reinstall the drain plug and tighten to the manufacturer's torque specification (typically around 30 ft-lbs).
  5. Fill with new engine oil.

3. Inspect and Replace Serpentine Belt

Check the serpentine belt for signs of wear, fraying, or glazing.
If damaged, replace the serpentine belt.
- Sub-steps:
  1. Release the tension on the serpentine belt using a wrench on the tensioner pulley.
  2. Remove the old belt and route the new belt according to the vehicle's belt routing diagram.
  3. Ensure the belt is seated properly on all pulleys.
  4. Release the tensioner and recheck the belt alignment.

4. Transmission Fluid Check

Check the transmission fluid level and condition.
If the fluid is low or burnt, change the transmission fluid.
- Sub-steps:
  1. Locate the transmission dipstick and remove it.
  2. Inspect the fluid color and consistency. If it’s dark or has a burnt smell, it needs to be changed.
  3. Drain the old fluid using a fluid catch pan.
  4. Replace the transmission filter if applicable.
  5. Refill with the manufacturer-recommended transmission fluid.