my Volkswagen Golf MK7 (2015-2019) won't start, just clicks

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, wire brush.
• Disconnect the negative battery cable to prevent electrical shorts during repairs.
• Allow the engine to cool if previously running.

2. Battery Inspection and Replacement

• Sub-steps:
  1. Clean battery terminals with a wire brush to remove any corrosion.
  2. Reconnect the battery terminals securely.
  3. If the battery voltage is below 12.4 volts, charge or replace the battery.
  4. Test the battery under load to ensure it holds voltage.

3. Starter Motor Inspection and Replacement

• Sub-steps:
  1. Locate the starter motor (usually near the transmission).
  2. Disconnect the electrical connections from the starter motor.
  3. Remove the starter motor mounting bolts using a socket set.
  4. Carefully remove the starter motor from its mounting location.
  5. Inspect the starter for wear; if faulty, replace with a new starter.
  6. Reinstall the new starter motor and secure it with the mounting bolts; torque to manufacturer specifications.

4. Final Assembly

• Sub-steps:
  1. Reconnect the electrical connections to the starter motor.
  2. Reconnect the negative battery cable.
  3. Perform a final check on all connections and components.