why does my Toyota RAV4 Fourth Generation (2013-2018) battery die overnight when parked

Solution

1. Preparation

• Tools Required: Multimeter, ammeter, socket set, battery terminal cleaner, gloves.
• Safety Warning: Disconnect the negative battery terminal before working on electrical systems.

2. Replace Battery (if necessary)

• Disconnect the negative and positive battery terminals.
• Remove the battery hold-down clamp using a socket wrench.
• Lift the old battery out and dispose of it properly.
• Install the new battery in reverse order, ensuring it is securely held down.
• Reconnect the positive terminal first, followed by the negative terminal.

3. Address Parasitic Draw

• After isolating the circuit causing the draw, repair or replace the faulty component or wiring.
• If an accessory is identified as the cause, disconnect it or replace it with a properly functioning unit.
• Recheck the current draw to ensure it is within acceptable limits.

4. Final Checks

• Perform a load test on the new battery to confirm it can hold a charge.
• Ensure all electrical connections are clean and tight.