how to fix P0700 code in Tesla Model S Original (2012-2020)

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.

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, transmission fluid gauge, torque wrench.
• Gather all necessary replacement parts and tools before starting the repair.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.

2. Fluid Inspection and Replacement

1. Check Transmission Fluid Level:

   • Locate the transmission dipstick (if equipped) and remove it.
   • Wipe clean, reinsert, and then remove to check fluid level.
   • If low, add the recommended transmission fluid type (consult the owner's manual).

2. Replace Transmission Fluid:

   • Drain the old transmission fluid by removing the drain plug using a socket set.
   • Replace the drain plug and torque to manufacturer specifications.
   • Refill the transmission with new fluid through the dipstick tube or fill port, using a funnel.

3. Electrical System Inspection

1. Inspect Wiring and Connectors:

   • Disconnect the battery to ensure safety.
   • Visually inspect the transmission wiring harness for wear, fraying, or disconnection.
   • Clean any corroded connectors with electrical contact cleaner.

2. Test TCM and Sensors:

   • Reconnect the battery and use a multimeter to test the TCM's voltage and ground.
   • If the TCM is faulty, replace it according to manufacturer specifications.

4. Clear Codes and Test Drive

1. Reset the System:
   • Use the OBD-II scanner to clear any stored codes after completing repairs.
   • Perform a test drive to ensure proper shifting and that the check engine light does not reappear.