why does my Toyota RAV4 Fifth Generation (2019-present) battery keep dying

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, wire brush, safety goggles, gloves.
• Disconnect the negative battery terminal to ensure safety during inspection and repairs.

2. Clean Battery Terminals

• Remove the battery cables from the terminals (negative first, then positive).
• Use a wire brush to clean any corrosion from the battery terminals and cable ends.
• Reconnect the cables securely, starting with the positive terminal followed by the negative.

3. Test and Replace Battery

• If the battery voltage is below 12.4 volts, consider charging or replacing the battery.
• To replace, remove the battery hold-down bracket using a socket set.
• Lift the battery out of the tray (ensure it's upright) and replace it with a new battery of the same specifications.
• Reconnect the terminals securely.

4. Inspect and Repair Charging System

• If the alternator is underperforming, replace it. Remove the serpentine belt by releasing tension from the tensioner.
• Disconnect wiring harnesses and remove the alternator retaining bolts using a socket set.
• Install the new alternator and reattach the wiring and serpentine belt, ensuring proper tension.

5. Address Parasitic Drain

• If excessive current draw is detected, systematically remove fuses one by one to identify the circuit causing the drain.
• Once identified, repair or replace the faulty component associated with that circuit.