my BMW 5 Series F10/F11 (2010-2017) has a burning smell when I accelerate what does it mean

BMW 5 Series F10/F11 (2010-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

606 words

Problem Statement

The BMW 5 Series F10/F11 (2010-2017) is experiencing a burning smell when accelerating, indicating a potential issue with engine or drivetrain components.

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow engine to cool before opening the oil drain plug or working in the engine bay.

Symptoms

•Burning smell during acceleration
•Possible smoke from the engine bay or exhaust
•Check engine light illuminated (if applicable)
•Decreased engine performance or power loss
•Unusual noises from the engine or transmission

Diagnostic Steps

1
Inspect Engine Oil**: Check the engine oil level and condition for signs of burning or contamination.
2
Check Transmission Fluid**: Ensure the transmission fluid is at the correct level and not burnt.
3
Examine Belts and Hoses**: Visually inspect serpentine belts and hoses for wear, fraying, or melting.
4
Scan for Error Codes**: Use an OBD-II scanner to check for any fault codes related to the engine or transmission.
5
Inspect Exhaust System**: Look for any signs of leaks or damage in the exhaust system that may cause unusual odors.
6
Check for Fluid Leaks**: Examine the ground under the vehicle for any signs of leaking fluids.

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
•Multimeter
•Oil filter wrench
•Oil drain pan

Parts Required

•Engine oil
•Oil filter
•Transmission fluid
•Transmission filter (if applicable)
•Serpentine belt (if needed)
•Hoses (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect Engine Oil**: Check the engine oil level and condition for signs of burning or contamination.
2
Check Transmission Fluid**: Ensure the transmission fluid is at the correct level and not burnt.
3
Examine Belts and Hoses**: Visually inspect serpentine belts and hoses for wear, fraying, or melting.
4
Scan for Error Codes**: Use an OBD-II scanner to check for any fault codes related to the engine or transmission.
5
Inspect Exhaust System**: Look for any signs of leaks or damage in the exhaust system that may cause unusual odors.
6
Check for Fluid Leaks**: Examine the ground under the vehicle for any signs of leaking fluids.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, rags for cleanup.
Safety Warnings: Allow the engine to cool before starting any work. Disconnect the battery if working on electrical systems.

2. Change Engine Oil and Filter

Sub-steps:
1. Raise the vehicle using a jack and secure it on jack stands.
2. Place an oil drain pan under the oil pan.
3. Remove the oil drain plug and allow the oil to fully drain.
4. Replace the oil filter using an oil filter wrench.
5. Reinstall the drain plug and torque it to the manufacturer's specification (typically 25-30 Nm).
6. Fill with new engine oil as per the manufacturer's specifications (usually 5W-30 or 0W-40).

3. Change Transmission Fluid (if applicable)

Sub-steps:
1. Locate the transmission fluid drain pan and place a drain pan underneath.
2. Remove the drain plug and allow fluid to drain completely.
3. Replace the transmission filter if applicable.
4. Reinstall the drain plug, ensuring it is torqued to specifications.
5. Refill the transmission with new fluid using a funnel, ensuring the correct type is used (usually ATF compatible with BMW specifications).

4. Replace Worn Belts and Hoses

Sub-steps:
1. Inspect all belts and hoses for cracks, fraying, or signs of melting.
2. Use a socket set to remove any components obstructing access to the belts and hoses.
3. Replace any damaged belts or hoses with OEM or equivalent parts.
4. Reassemble any removed components and ensure all connections are secure.