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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in park (automatic) or neutral (manual).
• Disconnect the battery negative terminal to avoid electrical shock.

2. Battery Inspection and Replacement

• Tools Required: Multimeter, Battery terminal cleaner, Socket set
• Check battery condition:
  1. Use a multimeter to measure voltage; if below 12.4 volts, charge or replace the battery.
  2. Clean battery terminals using a battery terminal cleaner to remove corrosion.
  3. Tighten any loose connections at the battery.
  4. If the battery is over 3-5 years old or shows signs of failure, replace it.

3. Starter Motor Testing and Replacement

• Tools Required: Socket set, Remote starter switch, Torque wrench
• Test and replace starter motor:
  1. Locate the starter motor (generally near the transmission).
  2. Use a remote starter switch to bypass the starter solenoid; if the motor turns, the solenoid may be faulty.
  3. If the starter motor is defective, remove it by unbolting it from the engine block.
  4. Install the new starter motor, ensuring to torque the bolts to manufacturer specifications (typically around 15-25 Nm).
  5. Reconnect the wiring harness to the starter motor.

4. Final Assembly

• Reconnect the battery negative terminal.
• Ensure all tools are removed from the engine bay.
• Start the vehicle to check if the problem is resolved.