Usually, the windshield wiper blade need to be replaced after 6 months to 1 year, if the quality of the wiper is good, well maintained, then about 3 years or so need to be replaced once, the frequency of replacement is mainly determined by the damage of the wiper, the driving environment in different regions is not the same, the loss of the wiper is also different. Such as wind, sand, rain, snow, high temperature, cold and other conditions will affect the use of the wiper, will reduce the life of the wiper, when the damage is serious or abnormal use of the situation, it is time to replace the new wiper.

1. Wiper blade damage: in ordinary times, we do not pay attention to the maintenance of the car wiper blade. In rainy days, it is found that the wiper blade has been seriously damaged and cannot work normally. Replace a pair of wiper blades.

2. Damage of wiper motor: you can see the wiper motor after opening the car cover. You can touch the wiper motor with your hand. If you feel hot, it means that the motor is short circuited. The problem can be solved by replacing the motor.

3. Wiper link failure: there are many connecting places of the wiper link. If there are problems in these places, the wiper cannot work normally. You can check the operation of the wiper to determine whether it is a side bar failure.

4. Blown wiper fuse: in order to protect the car line, each electric equipment is equipped with a fuse. If the wiper cannot work, check whether the wiper fuse is blown, and replace the blown fuse with a spare fuse on the car.

5. Damage of wiper switch: Although the wiper switch is not often used, the automobile electrical appliance itself is unstable. Therefore, when no problem is found in the above inspection, it is necessary to consider the possible problem of the wiper switch. You can use a multi-meter to measure the quality of the switch or directly replace it with a new one for testing.

6. Wiper line fault: it is a complicated and time-consuming task to check the line. It is necessary to be able to skillfully use the automobile multi-meter, measure the voltage, resistance and current, and combine it with the actual situation to find out the line fault point that causes the wiper to not work.