how to fix P0700 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

4 min read

624 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 control system malfunction in Tesla Model S. 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 working on the transmission.

Symptoms

•Check engine light illuminated
•Erratic shifting or delayed gear changes
•Loss of power during acceleration
•Transmission overheating warnings
•Decreased fuel efficiency

Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using a compatible OBD-II scanner to retrieve additional trouble codes.
2
Inspect the transmission fluid level and condition; check for any signs of contamination or burning.
3
Examine the wiring and connectors to the transmission control module for signs of damage or corrosion.
4
Test the transmission fluid temperature sensor and other related sensors for proper function.
5
Check for any software updates or recalls that may affect the transmission control system.
6
Verify that the battery pack is functioning properly, as battery issues can influence the performance of electric vehicles.

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
•Funnel or fluid pump

Parts Required

•Transmission fluid (specific to Tesla Model S)
•TCM connectors (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using a compatible OBD-II scanner to retrieve additional trouble codes.
2
Inspect the transmission fluid level and condition; check for any signs of contamination or burning.
3
Examine the wiring and connectors to the transmission control module for signs of damage or corrosion.
4
Test the transmission fluid temperature sensor and other related sensors for proper function.
5
Check for any software updates or recalls that may affect the transmission control system.
6
Verify that the battery pack is functioning properly, as battery issues can influence the performance of electric vehicles.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is in a safe working environment and parked on a level surface.
Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission fluid fill and drain plugs.
2. Using a socket set, remove the drain plug and allow the old fluid to drain completely into a suitable container.
3. Inspect the old fluid for metal shavings or burnt odor, which indicates deeper issues.
4. Reinstall the drain plug and tighten to the manufacturer’s specified torque (consult the service manual for the exact value).
5. Refill the transmission with the recommended fluid type through the fill plug using a funnel or pump until the fluid reaches the proper level.

3. Inspect Transmission Control Module (TCM)

Sub-steps:
1. Locate the TCM in the vehicle (usually near the transmission).
2. Disconnect the wiring harness from the TCM.
3. Inspect the connectors for corrosion or damage; clean or replace if necessary.
4. Reconnect the TCM and ensure the connection is secure.

4. Reprogram or Update Software

Sub-steps:
1. Connect a laptop or diagnostic tool to the Tesla’s diagnostic port.
2. Follow the manufacturer's instructions to check for any available software updates for the TCM.
3. If an update is available, follow the prompts to install the latest software version.

5. Reconnect Battery and Test Drive

Sub-steps:
1. Reconnect the negative terminal of the battery.
2. Start the vehicle and allow it to reach operating temperature.
3. Take the vehicle for a test drive to ensure the transmission operates smoothly and the P0700 code does not reappear.