Possible reasons for failure of a headlight to light up:

Light bulb malfunction: A most common reason for headlight failure is that the bulb has burned out. Check if the bulb needs to be replaced.

Fuse issue: The fuse of the headlight may have blown. Check the fuse box and replace the fuse if it is damaged.

Circuit issue: A loose, short circuited, or disconnected wire can cause the headlight to fail.

Switch malfunction: A damaged or poorly connected headlight switch can prevent the headlight from functioning normally.

Relay malfunction: If a relay is used on the vehicle to control the headlight, a relay malfunction may result in failure of the headlight.

Low battery level: A low battery level may affect normal operation of the headlight.

Grounding issue: Poor grounding may prevent normal current flow and consequently reduce the brightness of the headlight.

Advantages of DPA headlight:

1. Lamp shade: The DPA lamp shade is made of imported Bayer PC material and based on a dual-color molding process. The surface is coated with imported UV hardening material, which features excellent resistance to UV and oxidation, preventing any yellowing in the first 2 years of use, leading to good light transmittance, and contributing to safe driving.

2. Lamp shell: The lamp shell is made of original PP material that is not easily oxidized and not fragile.

3. Lamp bowl: The lamp bowl is made of new material BMC characterized by high rigidity and strength, good forming shrinkage ability, and high dimensional accuracy. It effectively ensures the stability of light beams.

4. Lamp bulb: The light bulb harness is an original product with more stable quality and longer service life.

Core problems solved by DPA headlight: lamp shade yellowing and water ingress.