how to fix my Skoda Octavia NFL (2020-Present) if it won’t start after sitting in the cold?

Solution

1. Preparation

• Tools Required: Multimeter, socket set, OBD-II scanner, battery charger.
• Safety Warnings: Disconnect the battery before working on electrical systems.

2. Battery Service

• Step 1: If the battery is low, connect a battery charger and fully charge the battery.
• Step 2: If the battery fails the load test, replace it with a new one.
• Step 3: Clean the battery terminals with a wire brush and reinstall with tight connections.

3. Inspect Electrical Components

• Step 1: Check fuses related to the starting system; replace any blown fuses.
• Step 2: If the start relay is faulty, locate it in the fuse box and replace with a new relay.

4. Fuel System Check

• Step 1: If the fuel pump is not operational, check the fuel pump relay and replace if necessary.
• Step 2: If fuel pump issues persist, inspect the fuel lines for blockages and test the pump's electrical connections.

5. Final Steps

• Step 1: Reconnect the battery and attempt to start the vehicle.
• Step 2: If it starts, monitor for any unusual sounds or warning lights.