my Volkswagen Golf MK7 (2015-2019) won't start, just clicks, what’s the issue

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in park or neutral with the parking brake engaged.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Battery Inspection and Replacement

• Sub-step 1: Clean battery terminals with a wire brush to remove corrosion.
• Sub-step 2: Reconnect the battery terminals and check voltage again.
• Sub-step 3: If the voltage is low (below 12.4 volts), replace the battery with a new one (Group size 48 is common for MK7).
• Sub-step 4: Tighten the battery terminals securely.

3. Starter Motor Check and Replacement

• Sub-step 1: Reconnect the negative battery terminal.
• Sub-step 2: Locate the starter motor (usually near the transmission).
• Sub-step 3: Remove the electrical connectors from the starter motor.
• Sub-step 4: Remove bolts securing the starter motor (typically requires a socket set).
• Sub-step 5: Replace the starter motor with a new unit, ensuring it is properly aligned.
• Sub-step 6: Reconnect the electrical connectors and secure with bolts.

4. Final Assembly

• Sub-step 1: Reconnect the negative battery terminal.
• Sub-step 2: Start the vehicle to test the new battery and/or starter motor functionality.