my Toyota Camry XV40 (2007-2011) won't start and clicks when I turn the key

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the negative terminal of the battery to prevent electrical shock.

2. Battery Inspection and Replacement

• Inspect the Battery: Check for corrosion and ensure terminals are clean.
  • Use a wire brush to clean the terminals if necessary.
• Test the Battery: If voltage is below 12.4 volts, charge or replace the battery.
  • Use a battery charger or replace with a new battery rated for the Camry.

3. Starter Relay Check

• Relocate Relay: Remove the starter relay from the fuse box.
  • Use a flathead screwdriver to help pry it out if necessary.
• Swap Relay: Replace it with an identical relay from another circuit (ensure it's the same type).
• Test Start: Attempt to start the vehicle again.

4. Starter Motor Inspection

• Locate Starter Motor: The starter is typically located on the lower side of the engine, near the transmission.
• Check Connections: Ensure that the wiring harness and battery cables connected to the starter are secure and free from corrosion.
• Test Starter: If connections are fine, remove the starter motor.
  • Tools: Socket set, torque wrench.
  • Safety: Ensure the negative battery terminal is disconnected throughout this process.
• Bench Test Starter: Use jumper cables to connect the starter directly to a charged battery to check its operation.

5. Reinstallation

• Reinstall Starter: If the starter is functional, reinstall it using the correct torque specifications for the mounting bolts (typically around 15-25 ft-lbs).
• Reconnect Battery: Reattach the negative battery terminal.