my Skoda Octavia NFL (2020-Present) is experiencing battery drain when parked

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Tools Required: OBD-II scanner, multimeter, socket set, wire brush.

2. Clean Battery Terminals

• Remove the battery terminals using a socket set.
• Clean the battery terminals and clamps with a wire brush to remove any corrosion.
• Reconnect the terminals securely.

3. Address Parasitic Draw

• Reconnect the negative battery terminal.
• Using a multimeter set to the amps setting, connect it in series between the negative battery terminal and the battery cable.
• If the reading exceeds 50 mA, start removing fuses one at a time to identify the circuit causing the drain.
• Once identified, inspect the associated components for faults or failures (e.g., modules, relays).

4. Repair or Replace Faulty Components

• Depending on the identified issue, repair or replace defective components (e.g., faulty relay, module).
• Ensure that all connections are secure and that components are functioning correctly.

5. Finalize and Test

• Reassemble any components removed during diagnosis.
• Reconnect the battery and check for any warning lights.
• Start the vehicle and monitor for parasitic draw again with the multimeter.