How to judge that the ballast is broken, the characteristics of the xenon lamp ballast failure

The ballast is an important part of the xenon lighting system, also called HID electronic ballast. When the xenon lamp does not light up, is the bulb broken or the ballast broken? Many car owners will have this kind of doubts. The following will teach you how to judge that the ballast is broken.

How to judge whether the ballast is damaged

1. When the xenon lamp does not light up, unscrew the off light bulb and replace it with a new one. If the new light bulb is on, it is the bulb problem; if it does not light up, it is the ballast problem.

2. Check the connector of the ballast harness. If the socket is loose or there is a problem with the circuit, the ballast will malfunction; if the plug is normal, then the ballast will have a problem.

Fault characteristics of xenon lamp ballast

Fault 1: After installation, the headlights work normally, but the instrument panel headlight failure warning light is on

This is a very common fault, which may be due to the mismatch between the xenon lamp and the ballast. The xenon lamp and ballast with the same voltage should be selected.

Fault 2: After installation, the bulb flashes or often goes out or the left and right lights are not on at the same time, etc.

Most of the causes of such failures are circuit problems, which may be caused by excessive starting current of the ballast. At this time, it is necessary to check whether the working current of the headlight circuit is normal.