What is causing the electrical fault on my Matiz during driving at night?

An electrical fault in your Matiz while driving at night could be caused by a few issues, including a failing alternator, which may not be providing sufficient power to the headlights and other electrical components. Additionally, worn-out wiring or corroded connections could lead to intermittent power loss, particularly under the strain of nighttime driving. Another possibility is a weak battery that struggles to maintain the required voltage for lights and accessories. It's advisable to have the vehicle inspected by a professional to diagnose and resolve the issue safely.