Will the Engine Malfunction Light Illuminate When the Battery is Dead?

[VonLeo]

A dead battery can generally cause the engine malfunction light to illuminate. The reason the engine malfunction light comes on after a battery discharge may be due to the fault codes generated. These codes can initially be cleared at a 4S shop. If the fault codes reappear afterward, a professional inspection and repair will be necessary. Below is a relevant introduction: Meaning of the engine malfunction light: During vehicle operation or at the moment of ignition, the engine malfunction light on the dashboard—typically red or yellow—illuminates. In most cases, it does not disappear automatically, though it may in rare instances. This is referred to as the engine malfunction light being on. The engine malfunction signal is issued by the ECU (Engine Control Unit), which controls all electronic components of the engine, including the electronic throttle, fuel injectors, alternator, fuel pump, and more, covering systems such as intake, exhaust, fuel, ignition, and timing.