how to fix transmission jerking when shifting in Volkswagen Passat B8 (2015-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and securely lifted using jack stands.
• Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Socket set, funnel, transmission fluid pump.
• Sub-steps:
  1. Remove the transmission fluid dipstick (if equipped) to check fluid level.
  2. If fluid is low, locate the transmission pan and use a socket set to remove the drain plug or pan bolts.
  3. Allow the old fluid to drain completely into a suitable container.
  4. Replace the transmission filter if applicable by removing the old filter and installing a new one.
  5. Reinstall the drain plug or transmission pan, ensuring to use a new gasket if necessary.
  6. Refill the transmission with the specified type and amount of fluid using a funnel.

3. Inspect and Replace Transmission Mounts

• Tools Required: Socket set, pry bar, torque wrench.
• Sub-steps:
  1. Locate the transmission mounts under the vehicle.
  2. Using a socket set, remove the bolts securing the mounts to the transmission and chassis.
  3. Carefully lift the transmission slightly using a jack to relieve pressure on the mounts.
  4. Remove the old mounts and install new mounts, ensuring proper alignment.
  5. Torque the bolts to the manufacturer’s specifications.

4. Reprogram or Update Transmission Control Module

• Tools Required: OBD-II scanner with programming capability.
• Sub-steps:
  1. Connect the OBD-II scanner to the vehicle's diagnostic port.
  2. Follow the manufacturer's instructions to check for software updates.
  3. If updates are available, proceed to reprogram the transmission control module.
  4. After programming, clear any stored error codes.