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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Lift the vehicle using a jack and secure with jack stands.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid dipstick or fill plug.
  2. Remove the dipstick or fill plug and check fluid level.
  3. If fluid is low or in poor condition, drain it from the transmission pan.
  4. Replace with OEM recommended transmission fluid (check owner's manual for specifications).
  5. Refill the transmission with the correct type and amount of fluid.

3. Inspect and Repair Wiring

• Sub-steps:
  1. Inspect wiring harnesses connected to the TCM for wear, fraying, or corrosion.
  2. Repair or replace any damaged wires or connectors.
  3. Reconnect all harnesses securely.

4. Test and Replace TCM (if necessary)

• Sub-steps:
  1. Use a multimeter to test voltage and ground at the TCM connectors.
  2. If the TCM fails the electrical test, remove it from the vehicle.
  3. Install a new or reconditioned TCM, ensuring all connectors are secure.

5. Transmission Solenoid Testing

• Sub-steps:
  1. Locate the solenoids on the transmission.
  2. Perform an electrical test on each solenoid to ensure proper operation.
  3. Replace any malfunctioning solenoids.