how to fix P0700 transmission issue 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

456 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 issues 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 vehicle to cool before inspecting the transmission fluid.

Symptoms

•Check engine light illuminated
•Transmission shifts irregularly or slips
•Unusual noises from the transmission area
•Lack of acceleration or power
•Vehicle goes into limp mode

Diagnostic Steps

1
Use an OBD-II scanner to confirm the P0700 code and check for any additional codes related to the transmission.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Check the electrical connections to the transmission control module and associated wiring for damage or corrosion.
4
Test the transmission control module using diagnostic software to ensure it is functioning correctly.
5
Inspect the gearbox for any visible leaks or mechanical 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
•Socket set
•Torque wrench
•Electrical contact cleaner
•Fluid pump for transmission fluid

Parts Required

•Tesla-approved transmission fluid
•Transmission control module (if faulty)

Related Faults

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Diagnostic Steps

1
Use an OBD-II scanner to confirm the P0700 code and check for any additional codes related to the transmission.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Check the electrical connections to the transmission control module and associated wiring for damage or corrosion.
4
Test the transmission control module using diagnostic software to ensure it is functioning correctly.
5
Inspect the gearbox for any visible leaks or mechanical issues.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a safe working environment, parked on a level surface.
Disconnect the vehicle's 12V battery to prevent electrical shorts.

2. Transaxle Fluid Inspection and Replacement

Sub-steps:
1. Remove the fluid fill plug from the transmission.
2. If the fluid level is low, drain the old transmission fluid by removing the drain plug.
3. Inspect the old fluid for contamination or burning; if contaminated, a full fluid change might be necessary.
4. Replace the drain plug and fill the transmission with new Tesla-approved transmission fluid until it reaches the proper level.
5. Reinstall the fill plug securely.

3. Electrical Connection Check

Sub-steps:
1. Visually inspect the wiring harness connected to the transmission control module for any signs of wear or damage.
2. Clean any corroded connectors with electrical contact cleaner.
3. Reconnect all connectors securely.

4. Transmission Control Module Testing

Sub-steps:
1. Reconnect the battery.
2. Use specialized diagnostic software to communicate with the transmission control module.
3. Check for any fault codes and monitor live data for proper operation.
4. If the module shows faults, replace it according to manufacturer's specifications.

5. Final Assembly and Testing

Sub-steps:
1. Reinstall any components removed during the service.
2. Ensure all bolts are torqued to manufacturer specifications.
3. Start the vehicle and check for any warning lights.
4. Conduct a test drive to ensure proper shifting and performance.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Electrical contact cleaner
Fluid pump for transmission fluid

Parts Required:

Tesla-approved transmission fluid
Transmission control module (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the vehicle to cool before inspecting the transmission fluid.