how to fix a P0700 code on my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the battery to prevent electrical shock.

2. Transmission Fluid Inspection and Replacement

• Sub-step 1: Remove the transmission dipstick (if applicable) and check the fluid level.
• Sub-step 2: If fluid is low or contaminated, drain the old transmission fluid using a pan.
• Sub-step 3: Replace the transmission filter if applicable.
• Sub-step 4: Fill the transmission with the recommended type of fluid (consult the owner’s manual for specifications).

3. Inspect and Repair Wiring/Connections

• Sub-step 1: Visually inspect the wiring harness connected to the TCM for any signs of wear or damage.
• Sub-step 2: Use a multimeter to check for continuity and proper voltage at the TCM connector.
• Sub-step 3: Repair or replace any damaged wiring or connectors as needed.

4. TCM Testing and Replacement

• Sub-step 1: If all wiring is intact and fluid is in good condition, test the TCM for fault codes using the OBD-II scanner.
• Sub-step 2: If the TCM is faulty, remove it from its mounting position.
• Sub-step 3: Install the new TCM, ensuring it is properly secured and connected.
• Sub-step 4: Reconnect the battery.