What are the consequences of forgetting to turn off the low beam lights before turning off the engine?

[DiHarrison]

The consequences of forgetting to turn off the low beam lights before turning off the engine are: For vehicle models without an automatic light-off function, the lights will remain on until the battery is completely drained. A dead or insufficiently charged battery will prevent the car from starting. Therefore, it is advisable to check if any electrical devices are left on before exiting the vehicle each time. If the car's headlights have an automatic shut-off feature, they will turn off automatically after the engine is turned off. During long-term use of the vehicle, due to driving over bumps and washing the car, it is inevitable that the headlights may experience grounding short circuits, loosening and corrosion of screws at various fixed points, leading to an increase in circuit resistance (commonly known as poor grounding) and causing the headlights to dim. The usual methods to avoid such increases in resistance include cleaning and tightening.