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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle battery to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission drain plug and place a drain pan underneath.
  2. Remove the drain plug and allow the old fluid to fully drain.
  3. Replace the drain plug and tighten to the manufacturer's torque specifications (typically around 25 Nm).
  4. Remove the fill plug and use a funnel to add new transmission fluid (refer to the owner’s manual for the specific fluid type).
  5. Reinstall the fill plug and torque it to specifications.

3. Check and Repair Wiring/Connectors

• Sub-steps:
  1. Locate the wiring harness connected to the TCM and inspect for wear or damage.
  2. Clean any corroded connectors using an electrical contact cleaner.
  3. Repair or replace damaged wires as necessary.

4. Test and Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Reconnect the battery and use the OBD-II scanner to check for TCM updates.
  2. If the module is faulty, remove the TCM from its mounting position.
  3. Install the new TCM in the original position and connect all wiring securely.
  4. Clear the fault codes and recheck for any new codes after installation.

5. Reset Transmission Adaptations

• Sub-steps:
  1. With the vehicle running, use the diagnostic scanner to reset the transmission adaptations.
  2. Follow the scanner prompts to complete the reset process.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Multimeter
• Electrical contact cleaner
• Drain pan
• Funnel

Parts Required:

• Transmission fluid (specific to BMW specifications)
• Transmission control module (if replacement is necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems to avoid shorts.
• Allow the engine to cool before working on the transmission to prevent burns.