why does my Volkswagen Golf Eighth Generation (2020-present) have a harsh shift when changing gears

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 terminal to prevent electrical issues.

2. Fluid Change

• Tools Required: Socket set, fluid pump, drain pan, funnel
• Sub-steps:
  1. Locate the transmission pan and remove the bolts using a socket set.
  2. Allow the old fluid to drain completely into a drain pan.
  3. Replace the transmission filter if applicable.
  4. Reattach the transmission pan and torque the bolts to the manufacturer’s specifications (consult repair manual for torque specs).
  5. Using a fluid pump, fill the transmission with the recommended ATF fluid until it reaches the proper level.

3. TCM Reprogramming

• Tools Required: OBD-II scanner with programming capabilities
• Sub-steps:
  1. Connect the OBD-II scanner to the vehicle’s diagnostic port.
  2. Access the transmission control module settings through the scanner interface.
  3. Check for any available software updates and follow the prompts to reprogram the TCM if necessary.
  4. Clear any existing error codes from the system.

4. Linkage and Mount Inspection

• Tools Required: Socket set, wrench set
• Sub-steps:
  1. Inspect the transmission linkage for proper alignment and any signs of wear or damage.
  2. Tighten or replace any loose or damaged components.
  3. Inspect transmission mounts for deterioration and replace them if they show signs of failure.