my Honda Civic 11th Generation (2022-Present) battery dies quickly what's wrong

Solution

1. Preparation

• Gather tools needed: multimeter, OBD-II scanner, socket set, wire brush, protective gloves.
• Ensure the vehicle is parked in a safe, well-ventilated area and the engine is off.

2. Battery Terminal Cleaning

• Disconnect the negative terminal first, followed by the positive terminal.
• Use a wire brush to clean any corrosion from the battery terminals and cable connectors.
• Reconnect the positive terminal first, followed by the negative terminal.

3. Battery Replacement (if necessary)

• If the battery voltage is below acceptable levels or it fails the load test, replace the battery.
• Remove the battery hold-down clamp using a socket set.
• Carefully lift the battery out of the tray (note its weight).
• Place the new battery into the tray, ensuring it is secured with the hold-down clamp.
• Connect the positive terminal first, then the negative terminal.

4. Alternator Inspection (if necessary)

• If the alternator is not charging correctly, remove the serpentine belt using a socket set.
• Unplug the alternator connector and remove the mounting bolts.
• Replace with a new alternator, following the reverse order of removal.
• Reinstall the serpentine belt based on the routing diagram.