Head light is leaking?!?- Q&A About Leakage & Condensation

Q: Why is there condensation in vehicle lights?

A: Condensation occurs in a vehicle lamp because the materials inside the lamp absorb moisture from the atmosphere. When the lamp is turned on the temperature of the lamp will increase, which generates thermal convection due to the theory of warm air moving upwards and cooling air moving downwards. When the warm air encounters the low temperature, it will cause misting. Therefore, having mist is a normal effect when the inner and other of the vehicle light has different temperatures.

Q: Why does mist often appear on the inner surface of the vehicle light lens?

A: Nowadays, in order to improve the style and aesthetics, most vehicle light lenses are designed without a pattern which makes it easier to notice the mist than those lights with patterns. In addition, the surface of the lens directly encounters the outside air, which causes it to become the area where inner and outer have greatest differences in temperatures.

Q: Can the vehicle light be demisted?

A: After you turn off the vehicle light, the inner and outer temperature of the light will slowly become balanced as the inner temperature begins to cool down. When the inner and outer temperatures become balanced the mist will be discharged throughout the vehicle light vents. Therefore the mist will disappear or be reduced to a minimum.

Q: Will the mist have an influence on the vehicle lights service life or function?

A: After examining and reviewing the test results, there is no evidence that shows the mist in a vehicle light will shorten its service life or affect its functioning. Furthermore, all reflectors have been treated with insulator spray, which prevents rusting or deteriorating of the lamp materials from the mist.

 

Rules and notice to avoid occurring water-in incident

In order to prevent potential leakage issue from happening due to inappropriate handling, please comply with rules and notice below to avoid occurring water-in incident.

1.Please make sure the waterproof cover (no matter hard or soft material) is exactly mounted after changing low or high beam to maintain the waterproof foam/seal is tight.

2.Please confirm the bulb holder is exactly installed with an appropriate seal after changing turn signal bulb.

3.Please make sure the adjusting screw rod is properly mounted with an appropriate seal after assembling the rod.

4.Prohibit using abnormal bulb type to prevent failure of waterproof that causes by the loose seal.

5.Please confirm the motor is properly mounted with an appropriate seal after assembling the motor.

 

CONDENSATION IN A VEHICLE LIGHT DOESN’T EQUAL WATER LEAKING