my Volkswagen Golf MK7 (2015-2019) dashboard lights are flickering

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Tools Required: Socket set, multimeter, OBD-II scanner, wire brush.

2. Battery Inspection

• Sub-steps:
  1. Visually inspect the battery for corrosion on terminals.
  2. Clean any corrosion using a wire brush.
  3. Ensure the battery terminals are tight and secure.

3. Alternator Testing

• Sub-steps:
  1. Reconnect the battery terminal.
  2. Start the engine and use a multimeter to measure voltage at the battery terminals.
  3. Confirm voltage is between 13.7V and 14.7V while the engine is running.
  4. If voltage is outside this range, consider replacing the alternator.

4. Fuse and Wiring Inspection

• Sub-steps:
  1. Locate the fuse box and inspect fuses associated with the dashboard and lighting.
  2. Replace any blown fuses with the correct amperage.
  3. Inspect wiring harnesses for signs of damage or wear; repair or replace as necessary.

5. Ground Connection Inspection

• Sub-steps:
  1. Locate ground connection points within the engine bay and near the dashboard.
  2. Clean ground points to remove corrosion.
  3. Ensure all ground connections are tight and secure.