my Toyota RAV4 Fifth Generation (2019-present) dashboard lights flicker when I drive

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface, and the engine is turned off.
• Disconnect the battery to prevent electrical shock.

2. Clean Battery Terminals

• Remove the battery terminals (first the negative, then the positive).
• Clean the terminals and battery posts with a wire brush to remove any corrosion.
• Reconnect the terminals, starting with the positive side, then the negative.

3. Test and Replace Battery (if necessary)

• Using a multimeter, check the battery voltage.
  • If below 12.6 volts, consider replacing the battery.
• Remove the old battery (disconnect terminals, unbolt from the bracket).
• Install the new battery, ensuring a secure fit and proper terminal connections.

4. Inspect and Replace Alternator (if necessary)

• Check the alternator output with the engine running.
  • If below specifications, consider replacing the alternator.
• Disconnect the battery again, remove the alternator belt, and unbolt the alternator from its mount.
• Install the new alternator, reconnect the belt, and secure all bolts.
• Reconnect the battery.

5. Repair Wiring and Connections

• Inspect wiring harness for any cuts or frays.
• Repair or replace damaged wires using electrical tape or soldering as necessary.
• Ensure all electrical connections, including ground connections, are secure and free from corrosion.