my Toyota Highlander Fourth Generation (2020-present) won't start and just clicks what could be wron...

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in a well-ventilated area.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Battery Inspection and Replacement

• Sub-steps:
  1. Inspect the battery terminals for corrosion and clean them using a wire brush if necessary.
  2. If the battery voltage is below 12.4 volts, charge the battery or replace it if it cannot hold a charge.
  3. Reconnect the battery terminals, ensuring a tight connection.

3. Starter and Relay Replacement

• Sub-steps:
  1. If the starter relay is defective, locate the relay in the fuse box and replace it with a new one.
  2. If the starter is suspected to be faulty, remove it by unbolting it from the engine and disconnecting the electrical connections.
  3. Install the new starter by reversing the removal steps, ensuring all connections are secured.

4. Testing

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Attempt to start the vehicle to check if the problem is resolved.
  3. If the vehicle starts, monitor for any unusual noises or issues.