how to fix the P0700 transmission code in 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 turned off.
• Disconnect the battery to prevent any electrical shorts.

2. Fluid Replacement

1. Check Fluid Condition

   • Remove the transmission dipstick and inspect fluid color and smell.
   • If burnt or contaminated, proceed to fluid change.

2. Drain Old Fluid

   • Place a drain pan under the transmission pan.
   • Remove the transmission pan bolts using a socket set.
   • Carefully lower the pan to drain fluid and remove the old filter.

3. Replace Filter

   • Clean the transmission pan and magnet.
   • Install a new transmission filter according to manufacturer specifications.

4. Refill Transmission Fluid

   • Reinstall the transmission pan with a new gasket, tightening bolts to manufacturer torque specifications (typically around 8-10 Nm).
   • Use a funnel to refill new transmission fluid through the dipstick tube. Use the correct type of fluid (e.g., VW G052162A2).

3. Inspect and Repair Wiring

1. Visual Inspection

   • Inspect the wiring harness and connectors for any signs of wear, corrosion, or damage.
   • Repair or replace any damaged wiring or connectors.

2. Test TCM

   • Reconnect the battery and use a multimeter to check the TCM voltage and ground connections.
   • If faulty, replace the TCM according to manufacturer instructions.

4. Clear Codes and Test Drive

1. Reset the Codes

   • Use the OBD-II scanner to clear the P0700 code and any other related codes.

2. Test Drive

   • Drive the vehicle under various conditions to ensure the transmission operates smoothly without triggering any codes.