my Tesla Model S Original (2012-2020) transmission is slipping, what should I check?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

475 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 transmission slipping issues 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

•Always disconnect the high-voltage battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting any components.

Symptoms

•Loss of acceleration power
•Increased RPM without corresponding vehicle speed
•Unusual noises when accelerating
•Warning messages related to transmission or drivetrain
•Jerking or shuddering during gear changes

Diagnostic Steps

1
Inspect the vehicle's software version and ensure it is up-to-date.
2
Use an OBD-II scanner to check for any error codes related to the drivetrain or transmission.
3
Check the battery state of charge and health as it affects the performance of the electric drivetrain.
4
Inspect the transmission fluid level and condition (if applicable).
5
Examine the drive unit for any visible signs of wear or damage.
6
Review the vehicle's service history for any previous transmission-related repairs or updates.

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
•Fluid pump
•Socket set
•Torque wrench

Parts Required

•Transmission fluid (if applicable)
•Drive unit (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle's software version and ensure it is up-to-date.
2
Use an OBD-II scanner to check for any error codes related to the drivetrain or transmission.
3
Check the battery state of charge and health as it affects the performance of the electric drivetrain.
4
Inspect the transmission fluid level and condition (if applicable).
5
Examine the drive unit for any visible signs of wear or damage.
6
Review the vehicle's service history for any previous transmission-related repairs or updates.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and set to "Park."
Disconnect the high-voltage battery as a safety precaution.

2. Update Software

Connect the vehicle to Wi-Fi.
Check the Tesla app or vehicle settings for any available software updates.
Install the updates and restart the vehicle.

3. Inspect and Replace Transmission Fluid (if applicable)

Tools Required: Fluid pump, funnel, transmission fluid (if applicable).
Remove the fill plug from the transmission casing.
Insert a fluid pump and check the fluid level; if low, add the appropriate transmission fluid.
Replace the fill plug and ensure it is tight.

4. Inspect Drive Unit

Remove any necessary covers to access the drive unit.
Check for visible damage, such as leaks or loose connections.
If damage is found, proceed to replace the drive unit based on manufacturer specifications.

5. Reconnect Battery and Test Drive

Reconnect the high-voltage battery.
Start the vehicle and perform a test drive to check for slipping or other abnormal behaviors.