why does my Tesla Model S Original (2012-2020) have a transmission fluid burning smell

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

469 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 from transmission fluid in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle's battery before working on electrical components.
•Allow the vehicle to cool before inspecting the transmission to avoid burns.

Symptoms

•Burning smell noticeable during or after driving
•Fluid leaks under the vehicle
•Erratic shifting or delayed acceleration
•Warning lights on the dashboard
•Transmission slipping or difficulty engaging gears

Diagnostic Steps

1
Inspect the transmission fluid level and condition using the dipstick or recommended method.
2
Check for visible leaks around the transmission pan and seals.
3
Scan the vehicle's onboard diagnostics for error codes related to the transmission.
4
Inspect the transmission cooler and lines for blockages or damage.
5
Assess the temperature of the transmission fluid with a temperature gauge during operation.

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

•Fluid extractor or socket set
•Transmission fluid
•Wrench set
•Replacement seals/gaskets (if necessary)
•Screwdriver set
•Cleaning materials (brush, cloth)
•OBD-II scanner
•Torque wrench

Parts Required

•Tesla-approved transmission fluid
•Replacement seals/gaskets (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the transmission fluid level and condition using the dipstick or recommended method.
2
Check for visible leaks around the transmission pan and seals.
3
Scan the vehicle's onboard diagnostics for error codes related to the transmission.
4
Inspect the transmission cooler and lines for blockages or damage.
5
Assess the temperature of the transmission fluid with a temperature gauge during operation.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Wear safety gloves and goggles.

2. Inspect and Replace Transmission Fluid

Sub-steps:
1. If fluid level is low, drain existing fluid using a fluid extractor or by removing the drain plug.
2. Inspect the fluid for burnt smell or dark coloration indicating degradation.
3. Replace with the manufacturer-recommended transmission fluid. For Tesla Model S, use Tesla-approved fluid.
4. Refill the transmission with new fluid until it reaches the appropriate level.

Tools Required:

Fluid extractor or socket set
Transmission fluid

3. Check for Leaks

Sub-steps:
1. Clean the area around the transmission pan and any visible leaks.
2. Replace any damaged seals or gaskets identified during inspection.
3. Retighten any loose bolts on the transmission pan or housing.

Tools Required:

Wrench set
Replacement seals/gaskets (if necessary)

4. Inspect and Clean Transmission Cooler

Sub-steps:
1. Locate the transmission cooler and associated lines.
2. Remove any debris or blockages that may restrict airflow or fluid flow.
3. Ensure that the cooler is properly connected and not leaking.

Tools Required:

Screwdriver set
Cleaning materials (brush, cloth)