my Skoda Octavia NFL (2020-Present) won't shift gears what's the problem

Solution

1. Preparation

• Gather tools: OBD-II scanner, socket set, fluid catch pan, transmission fluid, funnel, and a torque wrench.
• Ensure the vehicle is on a level surface and secure with wheel chocks.

2. Check and Replace Transmission Fluid

• Sub-step 1: Locate the transmission dipstick or fill plug. If applicable, remove it to check fluid level.
• Sub-step 2: If fluid is low or dirty, drain the old fluid by removing the transmission pan using a socket set. Allow fluid to fully drain into a catch pan.
• Sub-step 3: Replace the transmission filter if applicable. Remove and clean the filter mounting surface.
• Sub-step 4: Install the new filter (if applicable) and the transmission pan, ensuring to torque the bolts to manufacturer specifications (typically around 10-12 Nm).
• Sub-step 5: Refill the transmission with fresh fluid using the appropriate type (check owner’s manual for specifications) through the dipstick tube or fill plug.

3. Inspect and Repair Electrical Connections

• Sub-step 1: Disconnect the battery to ensure safety while working on electrical components.
• Sub-step 2: Locate the TCM and inspect the wiring harness for fraying or damage. Clean any corrosion from terminals.
• Sub-step 3: Reconnect all electrical connections securely and reconnect the battery.

4. Test Drive and Adjust

• Sub-step 1: Start the vehicle and allow it to reach operating temperature.
• Sub-step 2: Conduct a test drive to assess shifting performance in various driving conditions (city and highway).
• Sub-step 3: If issues persist, further diagnostics may be required, potentially indicating TCM replacement or internal transmission repair.