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

Solution

1. Preparation

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

2. Check Transmission Fluid

• Tools Required: Transmission fluid dipstick (if applicable), funnel, and new transmission fluid.
• Remove the transmission dipstick and check the fluid level.
• If low, add the appropriate type of transmission fluid as specified in the owner's manual.
• If the fluid is dirty or burnt, proceed to drain and replace the fluid.

3. Inspect and Repair Wiring

• Tools Required: Multimeter, wire brush, electrical connectors.
• Visually inspect the wiring harness and connectors for any damage.
• Use a multimeter to check for continuity in the wiring.
• Repair or replace any damaged wires or connectors.

4. Test and Replace TCM if Necessary

• Tools Required: Multimeter, socket set.
• Disconnect the TCM and check its electrical connectors for corrosion.
• Test the TCM for proper voltage and ground using a multimeter.
• If faulty, replace the TCM with a new unit following the manufacturer's specifications.

5. Transmission Fluid Change (if required)

• Tools Required: Socket set, fluid pump, drain pan.
• Drain the old transmission fluid by removing the drain plug.
• Replace the transmission filter if applicable.
• Refill with new transmission fluid through the fill port, ensuring the correct type and amount is used.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery cable.
• Use the OBD-II scanner to clear the P0700 code.
• Perform a road test to ensure the issue is resolved.