my Toyota Corolla E210 (2019-2024) battery dies overnight, what could be the issue?

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, cleaning brush, safety goggles, gloves.
• Safety Warnings: Disconnect the battery before performing any electrical work.

2. Clean Battery Connections

• Sub-steps:
  1. Disconnect the negative terminal first, followed by the positive terminal.
  2. Use a wire brush to clean any corrosion from the battery terminals and cable ends.
  3. Reconnect the positive terminal first, followed by the negative terminal.

3. Replace Battery (if necessary)

• Sub-steps:
  1. Remove the battery hold-down bracket using a socket set.
  2. Carefully lift the battery out of the tray.
  3. Place the new battery in the tray, ensuring correct orientation.
  4. Reinstall the hold-down bracket and tighten to manufacturer specifications.
  5. Reconnect the battery terminals (positive first).

4. Repair or Replace Faulty Components

• Sub-steps:
  1. Identify any faulty components causing parasitic draw (e.g., trunk light, glove box light).
  2. Replace or repair the component as necessary.
  3. Ensure that all electrical connections are secure and free from damage.