how to fix P0700 code in Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to ensure safety while working on electronic components.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid dipstick or fill plug.
  2. Remove the dipstick or fill plug and check fluid level; add fluid if low.
  3. If fluid is dark or has a burnt smell, drain the old fluid by removing the transmission pan.
  4. Replace the old fluid with the manufacturer's recommended transmission fluid.
• Tools Required: Socket set, funnel, transmission fluid pump (if necessary).

3. Inspect and Repair Wiring

• Sub-steps:
  1. Examine the wiring harness connected to the TCM for frays or exposed wires.
  2. Repair any damaged wiring using solder or heat shrink tubing.
  3. Ensure connectors are clean and securely attached.
• Tools Required: Wire strippers, soldering iron, heat shrink tubing.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Remove the TCM from its mounting location by unscrewing any retaining bolts.
  2. Disconnect the electrical connectors from the TCM.
  3. Install the new TCM by reconnecting the electrical connectors and securing it in place.
  4. Ensure all connections are tight and free of corrosion.
• Tools Required: Socket set, torque wrench.