Skoda Octavia NFL (2020-Present) transmission slips when shifting what's wrong

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to avoid electrical shorts.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission dipstick and check the fluid level.
  2. If low, add the appropriate transmission fluid (consult owner's manual for specifications).
  3. If the fluid is burnt or contaminated, drain the existing fluid using a fluid pump.
  4. Replace with new transmission fluid, ensuring the correct type is used (typically VW G 052 162 A2 for Skoda).
  5. Reattach the dipstick and start the engine. Allow it to warm up and recheck the fluid level.

3. Inspect and Repair Wiring and Connectors

• Sub-steps:
  1. Remove the underbody covers to access the transmission wiring harness.
  2. Inspect all connectors for corrosion, damage, or loose connections.
  3. Repair or replace any damaged wiring or connectors as necessary.
  4. Ensure all connections are secure before reassembling the underbody covers.

4. Update Transmission Control Module Software

• Sub-steps:
  1. Connect the vehicle to a diagnostic tool with dealer-level access.
  2. Check for available updates for the TCM software.
  3. Follow the manufacturer's instructions to update the software.
  4. Clear any existing fault codes after the update is complete.

5. Test Drive and Re-evaluate

• Sub-steps:
  1. Reconnect the battery and start the vehicle.
  2. Conduct a test drive to monitor shifting behavior.
  3. Pay attention to any slipping or abnormal behavior during acceleration.