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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Safety gear: gloves and safety glasses.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Raise the vehicle using a jack and secure with jack stands.
  2. Locate the transmission drain plug; use a socket set to remove it and drain old fluid into a pan.
  3. Inspect the old fluid for metal shavings or burnt smell, indicating internal damage.
  4. Replace the transmission fluid filter if applicable.
  5. Refill the transmission with new fluid as specified in the owner’s manual (typically VW ATF fluid, check for specific type).
• Tools Required: Socket set, transmission fluid pump.

3. Repair or Replace TCM

• Sub-steps:
  1. Disconnect the vehicle battery to prevent electrical shorts.
  2. Locate the TCM under the dashboard or near the transmission.
  3. Disconnect the wiring harness from the TCM, and remove mounting bolts.
  4. Replace the TCM with a new or refurbished unit if testing indicated failure.
  5. Reconnect the wiring harness and battery.
• Tools Required: Socket set, screwdriver set.

4. Inspect Wiring and Connectors

• Sub-steps:
  1. Visually inspect all wiring and connectors associated with the transmission for damage.
  2. Repair or replace any damaged wires or connectors.
  3. Ensure all connections are secure and free of corrosion.
• Tools Required: Wire cutters/strippers, soldering iron (if necessary).