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

Solution

1. Preparation

• Gather necessary tools and safety equipment.
• Ensure the vehicle is in park (or neutral for manual transmission) with the parking brake engaged.
• Disconnect the negative battery terminal to prevent electric shock.

2. Battery Replacement (if necessary)

• Tools Required: Socket set, wrench.
• Sub-steps:
  1. Remove the negative battery terminal using a wrench.
  2. Remove the positive battery terminal.
  3. Unscrew and remove the battery hold-down bracket.
  4. Carefully lift out the old battery and replace it with a new one of the same specifications.
  5. Reinstall the hold-down bracket and secure the new battery.
  6. Connect the positive terminal first, followed by the negative terminal.

3. Starter Motor Inspection/Replacement (if necessary)

• Tools Required: Socket set, torque wrench, multimeter.
• Sub-steps:
  1. Locate the starter motor, typically near the transmission.
  2. Disconnect the negative battery terminal again for safety.
  3. Remove the wiring harness connected to the starter.
  4. Unbolt the starter motor from its mounting using a socket.
  5. Inspect the starter for signs of wear or damage; replace if necessary.
  6. Install the new starter motor and torque bolts to manufacturer specifications.
  7. Reconnect the wiring harness and reconnect the negative battery terminal.