what should I do if my Volkswagen Golf MK7 (2015-2019) dashboard lights are flashing

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, fuse puller, basic hand tools.
• Ensure the vehicle is parked on a level surface and the ignition is turned off before starting any work.

2. Address Fault Codes

• Sub-steps:
  1. Connect the OBD-II scanner to the vehicle's diagnostic port.
  2. Record any error codes and refer to a repair manual for specifics.
  3. Clear the codes and see if they return after a short drive.

3. Battery Inspection and Replacement

• Sub-steps:
  1. Disconnect the negative battery terminal (safety warning: disconnect battery before working on electrical systems).
  2. Check the battery voltage using a multimeter; it should read around 12.6 volts or higher.
  3. If the battery is weak or old (over 4-5 years), replace it with a new one.
  4. Clean any corrosion from the terminals and reconnect securely.

4. Fuse Inspection

• Sub-steps:
  1. Locate the fuse box (usually under the dashboard or in the engine compartment).
  2. Use a fuse puller to check each fuse related to the dashboard or electronic systems.
  3. Replace any blown fuses with the same amperage rating.

5. Alternator Testing

• Sub-steps:
  1. Start the vehicle and measure the voltage at the battery terminals.
  2. The reading should be between 13.7 to 14.7 volts; if not, the alternator may need replacing.
  3. If necessary, replace the alternator according to manufacturer specifications.

6. Final Checks

• Sub-steps:
  1. Reconnect all components, ensuring all connections are tight.
  2. Start the vehicle and verify that dashboard lights no longer flash and warning lights are off.