why does my Skoda Octavia NFL (2020-Present) battery keep dying after a few days

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, ammeter, battery tester, socket set, wire brush.
• Ensure the vehicle is parked on a level surface and the ignition is off. Disconnect the negative battery terminal before starting any work.

2. Cleaning Battery Connections

• Sub-steps:
  1. Use a wire brush to clean any corrosion off the battery terminals and cable ends.
  2. Apply a corrosion inhibitor to the terminals to prevent future buildup.
  3. Reconnect the battery terminals securely, ensuring a tight fit.

3. Addressing Parasitic Draw

• Sub-steps:
  1. If the parasitic draw exceeds acceptable limits, systematically isolate circuits by removing fuses one at a time.
  2. When the current draw drops below 50 mA, identify the circuit associated with that fuse.
  3. Inspect components in the identified circuit for faults or issues, such as stuck relays or malfunctioning modules.

4. Battery Replacement (if necessary)

• Sub-steps:
  1. If the battery test indicates it is weak or failing, remove the battery by unbolting it from the tray.
  2. Install a new battery of the same specifications, ensuring it is securely fastened.
  3. Reconnect the negative terminal first, followed by the positive terminal.