my Ford Mustang S550 (2015-2023) won’t start and just clicks what to check

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in a safe, flat area and the ignition is off.
• Disconnect the negative battery terminal using a socket wrench.

2. Battery Replacement (if necessary)

• Tools Required: Socket set, multimeter, battery terminal cleaner.
• Remove the positive battery terminal first, followed by the negative terminal.
• Lift the battery out of the tray and inspect for any physical damage.
• Place the new battery in the tray, ensuring it's secure.
• Connect the positive terminal first, then the negative terminal.
• Ensure connections are tight and clean.

3. Starter Motor Inspection/Replacement (if battery is good)

• Tools Required: Socket set, ratchet, torque wrench, multimeter.
• Remove any components obstructing access to the starter, such as the intake duct or heat shield.
• Disconnect the electrical connections from the starter motor.
• Remove the starter motor mounting bolts and carefully take out the starter.
• Inspect the starter for wear or damage; replace if necessary.
• Install the new starter motor, tightening bolts to manufacturer specifications.
• Reconnect electrical connections ensuring they are secured properly.

4. Final Checks

• Reconnect the negative battery terminal.
• Ensure all components removed for access are reinstalled correctly.
• Start the vehicle to test the repair.