my Volkswagen Golf Eighth Generation (2020-present) won't start just clicks when I turn the key

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, jumper cables, socket set, torque wrench.
• Ensure the vehicle is in park (or neutral) and the parking brake is engaged.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Battery Replacement

1. Remove Battery Terminals

   • Use a socket wrench to loosen and remove the negative terminal first, followed by the positive terminal.
   • Carefully lift the battery out of the tray.

2. Install New Battery

   • Place the new battery in the tray, ensuring it is secure.
   • Connect the positive terminal first, followed by the negative terminal.
   • Tighten the terminals securely but avoid overtightening.

3. Reconnect Battery Terminal

   • Reconnect the negative terminal and ensure a tight fit.
   • Recheck that all connections are solid.

3. Starter Motor Inspection

1. Remove Starter Motor

   • Disconnect the electrical connector from the starter motor.
   • Remove the mounting bolts using a socket set.
   • Extract the starter from its housing.

2. Test Starter Motor

   • Use a multimeter to check the resistance of the starter motor; it should read within manufacturer specifications.
   • If the starter is defective, replace it with a new unit.

3. Reinstall Starter Motor

   • Position the starter back in place and secure with mounting bolts.
   • Reconnect the electrical connector.

4. Re-check System Functionality

• Reconnect the battery and start the vehicle.
• Monitor for any unusual sounds or warning lights on the dashboard.