my Skoda Octavia NFL (2020-Present) won’t start in cold weather, what to do?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Disconnect the negative terminal of the battery to prevent electrical shocks.

2. Battery Inspection and Replacement

• Tools Required:
  • Socket set
  • Multimeter
• Steps:
  1. Inspect the battery terminals for corrosion. Clean if necessary using a wire brush and a solution of baking soda and water.
  2. If the battery voltage is below 12.4 volts, replace the battery:
     • Remove the positive terminal first, then the negative terminal.
     • Remove any hold-down brackets and lift the battery out.
     • Install the new battery by placing it in the battery tray, securing it with brackets.
     • Connect the negative terminal first, then the positive terminal.

3. Fuel System Check

• Tools Required:
  • Fuel pressure gauge
• Steps:
  1. Relieve fuel system pressure by removing the fuel pump relay and cranking the engine for a few seconds.
  2. Reconnect the fuel pump relay.
  3. Attach a fuel pressure gauge to the fuel rail test port.
  4. Turn the ignition on (do not crank) and check the fuel pressure. It should meet manufacturer specifications (typically around 50-60 PSI for Skoda).
  5. If pressure is low, inspect the fuel pump and replace it if necessary.

4. Starter Motor Check

• Tools Required:
  • Multimeter
• Steps:
  1. Locate the starter motor and check for any loose connections.
  2. Use a multimeter to check for voltage at the starter when attempting to crank the engine.
  3. If no voltage is present, trace the wiring back to the ignition switch and check for continuity.
  4. If the starter motor is faulty, remove it by disconnecting the battery, unbolting the starter, and replacing it with a new unit.