how to resolve the P0700 transmission code in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

524 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 P0700 transmission malfunction in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0700

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the transmission to cool down before performing any fluid changes.

Symptoms

•Check engine light illuminated
•Erratic transmission shifting
•Loss of power during acceleration
•Reduced fuel efficiency
•Transmission overheating warning

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostics using an OBD-II scanner to retrieve additional codes.
2
Inspect the transmission fluid level and condition; look for discoloration or burning smell.
3
Check for loose or damaged electrical connections on the transmission control module (TCM).
4
Perform a visual inspection of the transmission wiring harness for any signs of wear or damage.
5
Run a diagnostic test of the TCM to check for any internal faults or software issues.

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
•Torque wrench
•Basic hand tools (sockets, wrenches)

Parts Required

•Transmission fluid (Tesla approved)
•Transmission control module (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s onboard diagnostics using an OBD-II scanner to retrieve additional codes.
2
Inspect the transmission fluid level and condition; look for discoloration or burning smell.
3
Check for loose or damaged electrical connections on the transmission control module (TCM).
4
Perform a visual inspection of the transmission wiring harness for any signs of wear or damage.
5
Run a diagnostic test of the TCM to check for any internal faults or software issues.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is on a flat surface and turn off the ignition.
Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Transmission Fluid Inspection and Replacement

Tools Required: Fluid pump, torque wrench, transmission fluid (specific to Tesla specifications).
Remove the transmission fluid drain plug and allow the old fluid to drain completely.
Inspect the drain plug for metal shavings or debris; this may indicate internal transmission wear.
Replace the drain plug and torque to manufacturer specifications.
Use the fluid pump to refill the transmission with new fluid until it reaches the proper level.

3. Electrical Connection Inspection

Reconnect the battery terminal and power on the vehicle.
Use the OBD-II scanner to check for any active codes.
Inspect the transmission control module wiring harness. Disconnect and reconnect the connectors to ensure a proper fit.
If damage is found, replace the wiring harness or repair as necessary.

4. TCM Software Update or Replacement

If the diagnostic steps indicate a software issue, connect the vehicle to the Tesla service computer.
Check for any available software updates for the TCM and install them.
If the TCM is faulty, remove it according to manufacturer specifications and replace it with a new unit, ensuring proper connections are restored.