Firstly, although the external lighting equipment of a car, such as headlights and taillights, has been designed and manufactured with waterproofing in mind, it does not mean that they can be completely submerged in water or cleaned directly with a large amount of water flow. This is because, despite the waterproof design of external lighting equipment, prolonged or direct impact from high-pressure water flow may damage these waterproof structures, causing water to enter the interior of the lamp.
Secondly, if water enters the interior of lighting equipment such as headlights, it may cause circuit short circuits, damage electronic components, and affect the normal use of lighting equipment, and even pose safety hazards.
Therefore, although it is theoretically possible to clean the external lighting equipment of a car with water, in practical operation, it is recommended that car owners use professional car cleaning tools or cleaning agents and follow the correct cleaning methods. If it is indeed necessary to clean with water, low-pressure water flow should also be chosen, and direct impact on the joints and sealing parts of the lamp should be avoided.
In general, to ensure the safety of cars and the normal use of lighting equipment, it is not recommended to directly use water to clean the external lighting equipment in auto accessories.