why is my Toyota RAV4 Fifth Generation (2019-present) dashboard lights flickering

Solution

1. Preparation

• Gather tools: multimeter, OBD-II scanner, socket set, and a screwdriver.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the negative battery terminal to prevent any electrical shorts.

2. Inspect Battery and Connections

• Remove the battery terminals (negative first, then positive).
• Clean any corrosion on the battery posts and cable connectors using a wire brush.
• Reconnect the terminals securely, starting with the positive terminal.

3. Test Electrical System

• Reconnect the negative terminal and turn on the vehicle.
• Use a multimeter to test the battery voltage; it should read between 12.4 - 12.7 volts.
• Start the engine and check the alternator output; it should read between 13.5 - 14.5 volts.

4. Examine Fuses and Wiring

• Locate the fuse box (usually under the dashboard or in the engine compartment).
• Check the fuses related to the dashboard lights and replace any that are blown.
• Inspect the wiring harness leading to the dashboard for frayed wires or loose connections.

5. Final Checks

• Clear any trouble codes from the OBD-II scanner.
• Recheck the dashboard lights after completing all previous steps.