What Causes a New Car's Fuse to Blow?

[CamillaAnn]

There are two main reasons: excessive electrical load or a short circuit in the car's wiring. Primary causes of excessive electrical load: Unauthorized modifications such as upgrading headlights, installing aftermarket audio systems, using low-quality cigarette lighter adapters, or connecting high-power devices to the cigarette lighter. Therefore, it is advised that car owners should understand the original equipment's power rating and X-load capacity before making any electrical modifications. For instance, installing headlights with higher wattage than the factory specifications may cause the fuse to blow. Daily maintenance tips: Avoid directly washing the engine bay with a hose to prevent short circuits in the fuse box and wiring. Additionally, visually inspect for any exposed metal wires due to deteriorated insulation that could cause a short circuit. When cleaning the interior, be careful not to disturb wires concealed under the floor mats.