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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is turned off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

• Tools Required: Socket set, funnel, drain pan.
  1. Remove the transmission fluid pan using the socket set.
  2. Drain the old transmission fluid into the drain pan.
  3. Inspect the old fluid for debris or discoloration; if found, further inspection of internal components may be necessary.
  4. Replace the transmission filter if applicable.
  5. Refill the transmission with the recommended fluid type using a funnel.

3. Inspect and Repair Wiring

• Tools Required: Multimeter, wire brush.
  1. Reconnect the battery and use a multimeter to check the voltage at the TCM connector.
  2. Clean any corroded connectors with a wire brush and apply dielectric grease.
  3. Repair or replace damaged wiring as needed.

4. Replace Transmission Control Module (if necessary)

• Tools Required: Socket set, OBD-II scanner.
  1. Remove the faulty TCM from its mounting location.
  2. Disconnect the electrical connectors from the module.
  3. Install the new TCM, ensuring all connectors are securely attached.
  4. Reconnect the battery and use the OBD-II scanner to program the new module if required.