why does my Toyota RAV4 XA50 (2019-2024) battery die overnight

Solution

1. Preparation

• Tools Required: Multimeter, socket set, wire brush, battery terminal cleaner, safety goggles, gloves.
• Disconnect the negative battery terminal before starting work to prevent electrical shorts.

2. Clean Battery Terminals

• Remove the battery terminals using a socket set.
• Clean the terminals and cable ends with a wire brush and battery terminal cleaner.
• Reattach terminals securely.

3. Address Parasitic Draw

• After identifying the source of the parasitic draw (from diagnostic steps), replace or repair the faulty component.
• For example, if the glove box light is staying on, adjust or replace the switch.

4. Replace Battery (if necessary)

• If the battery fails the load test, prepare to replace it.
• Remove the old battery and clean the battery tray.
• Install a new battery, ensuring correct polarity.
• Torque the battery terminal bolts to manufacturer specifications (typically around 10-15 Nm).