my Tesla Model S Original (2012-2020) transmission jerks when shifting what's wrong

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

537 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 jerking in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the high-voltage battery before working on electrical components.
•Allow the vehicle to cool down if the transmission has been running before performing inspections.

Symptoms

•Jerking sensation during acceleration or deceleration
•Unusual noises from the transmission area
•Delayed response when shifting gears
•Sudden loss of power during shifts
•Warning lights illuminated on the dashboard

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner for any error codes related to the transmission or drivetrain.
2
Check the software version and update the Tesla firmware to ensure the latest transmission software is installed.
3
Inspect the transmission fluid level and condition; look for signs of contamination or overheating.
4
Perform a visual inspection of the transmission connections and cables for any signs of wear or damage.
5
Test the throttle response and regenerative braking settings using the vehicle's onboard diagnostics.

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
•Torque wrench
•Fluid pump
•Transmission fluid catch pan

Parts Required

•Transmission fluid (specific to Tesla Model S)
•Replacement seals or gaskets if necessary

Related Faults

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Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner for any error codes related to the transmission or drivetrain.
2
Check the software version and update the Tesla firmware to ensure the latest transmission software is installed.
3
Inspect the transmission fluid level and condition; look for signs of contamination or overheating.
4
Perform a visual inspection of the transmission connections and cables for any signs of wear or damage.
5
Test the throttle response and regenerative braking settings using the vehicle's onboard diagnostics.

Solution

1. Preparation

Tools Required: OBD-II scanner, torque wrench, fluid pump, transmission fluid catch pan.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Disconnect the high-voltage battery for safety.

2. Inspect and Change Transmission Fluid

Sub-steps:
1. Remove the transmission fluid fill plug using a socket or wrench.
2. Check the fluid level; if low, prepare to add new fluid.
3. If the fluid appears dirty or burnt, drain the old fluid by removing the drain plug and letting it flow into a catch pan.
4. Replace the drain plug and torque it to manufacturer's specifications.
5. Using a fluid pump, add the recommended transmission fluid to the fill hole until it reaches the correct level.

3. Update Transmission Software

Sub-steps:
1. Connect the OBD-II scanner to verify current software version.
2. Access the Tesla software update menu in the car’s interface.
3. Follow prompts to download and install any available updates.

4. Inspect Electrical Connections

Sub-steps:
1. Visually inspect the wiring harness connected to the transmission for any signs of damage or corrosion.
2. Disconnect and reconnect any connectors to ensure a proper connection.
3. Repair or replace damaged wiring as necessary.

5. Reconnect Battery and Test Drive

Reconnect the high-voltage battery.
Start the vehicle and perform a test drive to assess the transmission behavior.