my Volkswagen Passat B8 (2015-2022) won't start and just clicks, what should I do?

Solution

1. Preparation

• Gather necessary tools: multimeter, socket set, wrench set, OBD-II scanner, jumper cables.
• Ensure the vehicle is in park (automatic) or neutral (manual) to safely perform repairs.
• Disconnect the battery by removing the negative terminal first.

2. Battery Inspection and Replacement

1. Test Battery Voltage

   • Connect a multimeter to the battery terminals (red to positive, black to negative).
   • If the voltage is below 12.4 volts, proceed to replace the battery.

2. Remove Old Battery

   • Use a socket set to remove the battery hold-down clamp.
   • Carefully disconnect the positive terminal first, followed by the negative terminal.
   • Lift the battery out of the vehicle.

3. Install New Battery

   • Place the new battery in the battery tray.
   • Connect the positive terminal first, followed by the negative terminal.
   • Reinstall the battery hold-down clamp and tighten securely.

3. Starter Motor Inspection

1. Visual Inspection

   • Locate the starter motor (usually near the transmission).
   • Check for any loose connections or visible damage to the wiring.

2. Direct Engagement Test

   • Using jumper cables, connect the starter motor’s terminal to the battery to test its operation.
   • If the starter engages and the engine starts, the starter is faulty and needs replacement.

3. Replace Starter Motor (if necessary)

   • Remove any components obstructing access to the starter.
   • Disconnect the wiring from the starter motor.
   • Unbolt the starter from its mounting bracket and remove it.
   • Install the new starter in the reverse order of removal.