how to fix P0700 code in Volkswagen Tiguan First Generation (2007-2018)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and engage the parking brake.
• Disconnect the battery to prevent electrical shorts.

2. Fluid Inspection and Replacement

• Sub-steps:
  1. Remove the transmission dipstick and check fluid level.
  2. If low, add the recommended transmission fluid (specify fluid type per manufacturer).
  3. If fluid is burnt or dirty, drain and replace the fluid:
     • Place a drain pan under the transmission.
     • Remove the drain plug and allow fluid to completely drain.
     • Replace the drain plug and torque to manufacturer specifications.
     • Fill with new transmission fluid through the dipstick tube.

3. Wiring and Connector Inspection

• Sub-steps:
  1. Locate the TCM and inspect the wiring harness for damage or corrosion.
  2. Disconnect the TCM connector and clean the terminals with electrical contact cleaner.
  3. Reconnect the TCM and ensure a secure connection.

4. TCM Testing and Replacement

• Sub-steps:
  1. Using a multimeter, check for the correct voltage and ground at the TCM connectors.
  2. If TCM is faulty, remove it by unscrewing the mounting bolts.
  3. Replace with a new TCM and torque bolts to specification.
  4. Reconnect all wiring and harnesses.

5. Reassemble and Reset

• Sub-steps:
  1. Reconnect the battery.
  2. Clear the trouble codes using the OBD-II scanner.
  3. Start the engine and allow it to reach operating temperature.