how to fix P0700 transmission code in BMW 5 Series F10/F11 (2010-2017)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, fluid pump, transmission fluid, shop towels.
• Safety Warnings: Disconnect the battery before performing electrical work and allow the engine to cool before inspecting the transmission.

2. Address Fluid Issues

1. Check Fluid Level:

   • Using the transmission dipstick, check the fluid level and top off if necessary using the specified transmission fluid.
   • If fluid is low, inspect for leaks and repair as needed.

2. Change Transmission Fluid (if contaminated):

   • Raise the vehicle securely on jack stands.
   • Remove the transmission drain plug and let the fluid drain into a container.
   • Replace the transmission filter if applicable.
   • Reinstall the drain plug with the specified torque (consult service manual for torque specifications).
   • Fill the transmission with new fluid using a fluid pump until it reaches the appropriate level.

3. Repair Electrical Issues

1. Inspect Wiring and Connectors:

   • Visually inspect the wiring harness and connectors to the TCM for any signs of wear, corrosion, or damage.
   • Repair or replace any damaged wiring or connectors.

2. Test and Replace TCM (if necessary):

   • If the TCM is found to be faulty, remove the old TCM by disconnecting the electrical connectors and removing the mounting bolts.
   • Install the new TCM, ensuring all connections are secure.
   • Reconnect the battery.

4. Clear Codes and Test Drive

1. Clear Error Codes:
   • Use an OBD-II scanner to clear the P0700 code and any related codes.
2. Test Drive:
   • Conduct a test drive to ensure the vehicle shifts smoothly and no additional codes are triggered.