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

625 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 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 to prevent shorts.
•Allow the vehicle's components to cool down before working on them.

Symptoms

•Check engine light illuminated
•Transmission may not shift properly
•Erratic shifting behavior
•Loss of power during acceleration
•Reduced efficiency or range

Diagnostic Steps

1
Scan the vehicle with an OBD-II scanner to confirm the P0700 code and check for any additional transmission-related trouble codes.
2
Inspect the vehicle's electrical connections and wiring harness related to the transmission for any signs of damage or corrosion.
3
Verify the transmission fluid level and condition; check for leaks or contamination.
4
Check the vehicle’s software version to ensure it is updated, as software issues can sometimes trigger erroneous codes.
5
Perform a visual inspection of the transmission control module (TCM) for any signs of physical damage or overheating.
6
If equipped, test the transmission fluid temperature sensor for proper operation using a multimeter.

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
•Multimeter
•Socket set
•Torque wrench
•Funnel
•Fluid catch pan

Parts Required

•Transmission fluid (specific to Tesla Model S)
•Transmission Control Module (if replacement is necessary)

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Diagnostic Steps

1
Scan the vehicle with an OBD-II scanner to confirm the P0700 code and check for any additional transmission-related trouble codes.
2
Inspect the vehicle's electrical connections and wiring harness related to the transmission for any signs of damage or corrosion.
3
Verify the transmission fluid level and condition; check for leaks or contamination.
4
Check the vehicle’s software version to ensure it is updated, as software issues can sometimes trigger erroneous codes.
5
Perform a visual inspection of the transmission control module (TCM) for any signs of physical damage or overheating.
6
If equipped, test the transmission fluid temperature sensor for proper operation using a multimeter.

Solution

1. Preparation

Gather tools and parts necessary for the repair.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Disconnect the vehicle's 12V battery to prevent any electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Funnel, fluid catch pan, socket set, torque wrench
Remove the transmission fluid drain plug and allow the fluid to drain completely into a catch pan.
Inspect the drained fluid for contamination or burnt smell; if contaminated, replace with new fluid.
Reinstall the drain plug and torque to manufacturer specifications.
Using a funnel, refill the transmission with the appropriate type of transmission fluid (consult the owner’s manual for specifications).

3. Inspect and Repair Electrical Connections

Reconnect the battery and inspect all related electrical connectors and wiring for signs of corrosion or damage.
Clean any corroded connectors with electrical cleaner and reassemble securely.
Replace any damaged wiring harnesses or connectors as needed.

4. Update Software

Tools Required: OBD-II scanner, Laptop with appropriate software
Connect the OBD-II scanner or laptop to the vehicle's diagnostic port.
Check for available software updates and follow the manufacturer's instructions to update the vehicle’s software.

5. Replace Transmission Control Module (if necessary)

Tools Required: Socket set, torque wrench
Locate the TCM, which is typically mounted near the transmission.
Disconnect the wiring harness from the TCM.
Remove the TCM mounting bolts and carefully detach it from its position.
Install the new TCM, ensuring it is securely fastened and all connections are reattached.