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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery.
• Ensure the vehicle is parked on a flat surface and secure it with wheel chocks.

2. Change Transmission Fluid

• Tools Required: Fluid pump, 10mm socket, torque wrench, clean container.
• Remove the transmission filler plug and check fluid level.
• If low, drain the old transmission fluid by removing the drain plug.
• Replace the drain plug and refill with manufacturer-recommended transmission fluid using a fluid pump.
• Torque the drain plug to the specified value (check service manual for exact torque specification).

3. Inspect and Replace Transmission Control Module (TCM) if Necessary

• Tools Required: Screwdriver set, OBD-II scanner.
• Locate the TCM, usually near the transmission or under the dashboard.
• Disconnect the wiring harness from the TCM.
• Remove the TCM using a screwdriver and replace it with a new unit.
• Reconnect the wiring harness and ensure it is secure.

4. Test Transmission Solenoids

• Tools Required: Multimeter.
• Disconnect the transmission solenoids' electrical connectors.
• Set the multimeter to measure resistance and test each solenoid according to manufacturer specifications.
• If any solenoid is out of range, replace it.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminals securely.
• Use an OBD-II scanner to clear the P0700 code and any other transmission-related codes.
• Start the engine and let it idle for a few minutes.