why does my Toyota Camry battery die overnight when car is off

Solution

1. Preparation

• Gather tools and necessary parts.
• Disconnect the negative battery terminal to ensure safety while working on the electrical system.

2. Battery Replacement (if necessary)

• Tools Required: Wrench set, battery terminal cleaner, protective gloves.
• Sub-steps:
  1. Remove the battery hold-down bracket using the appropriate wrench.
  2. Carefully lift the battery out of its tray and place it on a stable surface.
  3. Clean the battery tray and terminals using a terminal cleaner.
  4. Place the new battery in the tray and secure it with the hold-down bracket.
  5. Reconnect the positive terminal first, followed by the negative terminal.

3. Repair Electrical Issues

• Tools Required: Multimeter, screwdriver set.
• Sub-steps:
  1. Identify and disconnect the circuit causing the parasitic draw.
  2. Repair or replace any damaged wiring or components found during inspection.
  3. Reinstall any fuses that were removed and ensure they are functioning correctly.

4. Recheck System

• Tools Required: Multimeter.
• Sub-steps:
  1. Reconnect the battery and check for any current draw using the multimeter.
  2. Ensure the draw is below 50 mA; if it’s higher, further investigation is required.
  3. Test the vehicle after repairs to confirm the issue is resolved.