my Tesla Model S Original (2012-2020) makes a loud clunk when shifting gears

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

Learn how to diagnose and fix loud clunking noise during gear shifts 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 high-voltage battery before working on electrical systems.
•Allow the vehicle to cool before inspecting the transmission area.

Symptoms

•Loud clunking noise during gear shifts
•Possible hesitation or delay in gear engagement
•Vibration felt through the vehicle when shifting
•Unusual wear on tires or drivetrain components
•Warning lights or alerts on the dashboard (if applicable)

Diagnostic Steps

1
Inspect the vehicle for any visible signs of damage or loose components in the drivetrain and transmission areas.
2
Use an OBD-II scanner to check for any error codes related to the transmission or drivetrain.
3
Test the vehicle's battery and electric motor performance to ensure they are operating within normal parameters.
4
Check the transmission fluid level and condition (if applicable) to ensure proper lubrication.
5
Conduct a road test to replicate the clunking noise while monitoring the vehicle's behavior during gear shifts.
6
Inspect the motor mounts and transmission mounts for wear or damage.

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
•Torque wrench
•Fluid extractor
•Funnel

Parts Required

•New transmission fluid
•New motor mounts (if damaged)
•New transmission mounts (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of damage or loose components in the drivetrain and transmission areas.
2
Use an OBD-II scanner to check for any error codes related to the transmission or drivetrain.
3
Test the vehicle's battery and electric motor performance to ensure they are operating within normal parameters.
4
Check the transmission fluid level and condition (if applicable) to ensure proper lubrication.
5
Conduct a road test to replicate the clunking noise while monitoring the vehicle's behavior during gear shifts.
6
Inspect the motor mounts and transmission mounts for wear or damage.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and engage the parking brake.
Disconnect the vehicle's high-voltage battery for safety.
Gather necessary tools and parts.

2. Inspect and Secure Mounts

Sub-steps:
- Locate the motor and transmission mounts.
- Visually inspect for cracks, wear, or looseness.
- Tighten any loose bolts to the manufacturer's specified torque.
Tools Required: Socket set, torque wrench.

3. Fluid Check and Replacement

Sub-steps:
- If the fluid is low or dirty, drain the old transmission fluid using a fluid extractor.
- Replace with the manufacturer-recommended transmission fluid, ensuring the level is correct.
Tools Required: Fluid extractor, funnel, new transmission fluid.

4. Replace Damaged Components

Sub-steps:
- If any mounts are found to be damaged, remove the old mounts using a socket set.
- Install new mounts and torque to the manufacturer's specifications.
Tools Required: Socket set, torque wrench.
Parts Required: New motor mounts, new transmission mounts (if necessary).

5. Reassemble and Reconnect

Reconnect the high-voltage battery and any components removed during the repair process.
Ensure all tools are removed from the engine bay before starting the vehicle.