Analysis and solutions to common problems of automobile headlights

Headlights are the eyes of the car, the failure of the headlights will cause great security risks to the daily driving safety. Generally speaking, the common faults of car headlights include the failure of headlights, High beam lamp is not bright, near light lamp is not bright, small lamp, tail lamp and instrument lamp are not bright, etc. According to different situation, we can take different measures to repair. How, then, What can be done to reduce or avoid lamp malfunctions? Following the following day deloitte auto parts small make up to see the details of it. Causes and measures for problems with the headlights The headlights don't work at night

At night, the headlights are not bright enough to drive on the road, the first thing to see if the fuse burns out. If the switch on the headlight, far light, light are not on, should first check

If the fuse box has a fuse burn out, then check the car light switch to the light switch there is no fault.

When the knife is used to overlap the fire wire of the dimmer switch with the remote and the fire wire of the dimmer switch with the remote and near-light terminals respectively, the lamp will be on, indicating that the dimmer switch has a problem.

When connected, the distance is bright. The near light doesn't shine. The fault is between the dimmer switch and the headlight or the near-light. If the high beam headlamp is not on, should check the high beam indicator light

Is it on? If so, the fault should be between the junction board and the headlights. If not, the fault should be indicated between the junction board and the dimmer switch. If only one big light is on, another

If one does not light, it may be the filament has been burnt out or the wiring is broken, or the iron is not good.

1. Light bulbs often burn out

The bulb of size lamp is in use process, filament often burns out, its reason has: voltage regulator has fault, voltage is too high; Bad contact of battery lead leads to generator

Too high no-load voltage; There is a short circuit between the generator armature and the field coil. If you turn on the light switch and the bulb burns out immediately, check whether there is a break between the charging lines. As it is Often burn-out bulb, check generator voltage regulator voltage is not adjusted too high.

The tail light is not on When the car is running, other lights work normally, only the taillight is not on, the reason may be the taillight filament burned out, the taillight with bad iron or taillight circuit is broken. Check,Should first remove the tail lamp bulb, check whether the filament is burned. If the filament is in good condition. Then use a test pen or screwdriver to scrape the terminal post of the tail lamp against the iron. If there is no spark, indicate There is a break in the taillight circuit; Find the break and connect the wire; If there is spark, indicate that the taillight is not good.

2. Brake light doesn't work

When driving brake, the car's brake light is not on, the main reasons are: filament burning, bad iron, brake light switch failure or circuit break.

When checking, remove the brake lamp bulb first. Check night filament. If the filament is in good condition. At the same time as the brake pedal is pressed down, the brake lamp lamp terminal can be connected with a screwdriver or a conductor Iron scraping fire: if there is fire, brake light is not on, indicating that the iron is bad; If there is no fire, indicate possible brake light switch failure or circuit break. Use a screwdriver or wire again The two terminals of the brake light switch are short-circuited; If the brake light is on, it indicates that the brake light switch is defective and should be replaced or repaired. If the brake light is still off, indicate a break in the circuit , find out and then exclude.

The turn signal is not on

Turn signal switch left and right, turn signal is not on, the reason is the power supply through the flash relay to the switch in the fire line there is a break, or the flash relay or turn

There is something wrong with the directional switch.

How to avoid car lamp malfunction

Say no to bad lights

The "soul" of headlamp is its bulb, the effect that its performance stand or fall will affect nocturnal illume, concern traffic safety directly. The life of inferior bulb is short, cannot assure stable

Fixed quality, and inferior bulb brightness is insufficient, focus is not focused, the range is close, when overtaking, will let the driver produce optical illusion, easy to happen accident. Therefore, in since

Line refit headlights or damage reasons need to be replaced, do not consider inferior bulbs.