what does error code P0700 mean for my Tesla Model S Plaid/Refresh (2021-present)?

Learn how to diagnose and fix P0700 transmission control malfunction in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's 12V battery to ensure safety while working on electrical components.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid dipstick or access point.
  2. Remove the dipstick and check the fluid level. If low, top it up with manufacturer-recommended transmission fluid.
  3. If the fluid is dark or smells burnt, consider a complete fluid change.
• Tools Required: Transmission fluid pump, fluid catch pan, funnel.

3. Check and Repair Wiring

• Sub-steps:
  1. Visually inspect the wiring harness connected to the TCM for frays or damage.
  2. Repair or replace any damaged wiring or connectors.
  3. Secure all connections to ensure proper contact.
• Tools Required: Wire strippers, electrical tape, connectors.

4. Update TCM Software

• Sub-steps:
  1. Connect the vehicle to a Tesla service computer or use the Tesla app to access software updates.
  2. Follow on-screen prompts to ensure the TCM software is up to date.
• Tools Required: Tesla service computer or mobile device.

5. Reconnect Battery and Test

• Sub-steps:
  1. Reconnect the 12V battery.
  2. Start the vehicle and monitor for the check engine light.
  3. Test drive the vehicle to ensure normal transmission operation.
• Safety Warnings: Ensure all tools are removed from the engine bay before reconnecting the battery.