my Volkswagen Golf MK7 (2015-2019) transmission jerks when shifting what's the issue

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, fluid pump, torque wrench.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the battery to ensure safety while working on electrical components.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick or fill plug.
  2. Remove the dipstick or fill plug and check fluid level; top up if necessary.
  3. If the fluid is dark or smells burnt, drain the old fluid using a fluid pump.
  4. Replace with manufacturer-recommended transmission fluid, ensuring the proper type and quantity.
  5. Reinstall the dipstick or fill plug securely.

3. Inspect and Replace Transmission Filter (if applicable)

• Sub-steps:
  1. Remove the transmission pan using a socket set, being cautious of fluid spillage.
  2. Remove the old filter and replace it with a new one.
  3. Clean the transmission pan and inspect for metal debris.
  4. Reinstall the pan with a new gasket, tightening bolts to the manufacturer’s torque specifications.

4. Update Transmission Control Module Software

• Sub-steps:
  1. Reconnect the battery.
  2. Use an OBD-II scanner to check for available software updates for the TCM.
  3. Follow the manufacturer’s instructions to install any updates.

5. Recheck System Functionality

• Sub-steps:
  1. Start the vehicle and allow it to reach operating temperature.
  2. Test drive the vehicle to check for improvements in shifting performance.