Volkswagen Golf Seventh Generation (2013-2020) P0700 code how to diagnose

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery to ensure safety during the repair process.

2. Address Faulty Transmission Fluid

• Sub-steps:
  1. Drain the old transmission fluid using a fluid extractor or by removing the drain plug.
  2. Replace the transmission fluid filter if applicable.
  3. Refill the transmission with the correct type and amount of fluid as specified in the owner's manual.

3. Repair or Replace Wiring/Connectors

• Sub-steps:
  1. Inspect and repair any damaged wiring or connectors found during the diagnostic steps.
  2. Ensure all connections are secure and free of corrosion.
  3. Use dielectric grease on connectors to prevent future corrosion.

4. Reprogram or Replace TCM

• Sub-steps:
  1. If the TCM is faulty, remove it by unscrewing the mounting bolts and disconnecting the wiring harness.
  2. Install the new or reprogrammed TCM by reversing the removal process.
  3. Reconnect the battery and perform any necessary programming or adaptations using a diagnostic tool.

5. Final Checks

• Sub-steps:
  1. Recheck fluid levels after replacing the fluid and filter.
  2. Start the vehicle and allow it to reach operating temperature.
  3. Shift through all gears to ensure proper engagement and operation.

Tools Required:

• OBD-II scanner
• Fluid extractor or socket set
• Multimeter
• Torque wrench
• Screwdrivers

Parts Required:

• Transmission fluid
• Transmission fluid filter (if applicable)
• Transmission control module (if applicable)
• Wiring connectors (if damaged)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the engine to cool before opening the transmission fluid reservoir.