my Volkswagen Golf MK7.5 (2020-Present) dashboard lights are flickering what's wrong

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety while working on the electrical system.

2. Inspect and Clean Battery Connections

• Remove the positive (+) and negative (-) battery terminals using a socket wrench.
• Clean the terminals and battery posts with a wire brush or terminal cleaner to remove corrosion.
• Reconnect the terminals securely and ensure they are tight.

3. Check Alternator Functionality

• Start the engine and use a multimeter to measure the voltage at the battery terminals.
• If voltage is below 13.5V while the engine is running, the alternator may need to be tested or replaced.
• Inspect the alternator belt for wear or looseness.

4. Test Dashboard Wiring and Fuses

• Locate the fuse box and check for any blown fuses related to the dashboard and interior lighting.
• Replace any blown fuses with the same amperage rating.
• Inspect wiring harnesses for any signs of damage or loose connections; repair or replace as necessary.

5. Reconnect Battery and Final Checks

• Reconnect the negative battery terminal and tighten it securely.
• Start the vehicle and observe the dashboard lights for proper operation.