Wiper Diagnosis

Wiper Diagnosis

Inspecting their operation can identify wiper problems. Use the car's squirter/mister if equipped and look for these effects and causes:

Noise: friction between the blade and glass or the rubber has torn and slaps the windshield.


Vibration: blade rubber worn or wiper improperly mounted to the arm.
Banding in wipe pattern: cracked or hardened blade rubber.

1.Pouty.

Multifunctional windshield wipers are in accordance with the curvature of mostly car design, not for car-specific models to design, so when very few models excessive curvature of the glass, it will appear slightly at the end of the wiper (even though the original wiper ), but this does not affect the use, or to reduce a size on it. Just like, the original is 19”, we use 18”.


2.The middle can not match the glass closely, unclean under the middle wiper.


The wiper motor works after several years, it have not enough pressure to wipe the wipers. Some pressure depends on its car, just like CHERY QQ, BYD F3, these cars are with small pressure, so we shall use the hybrid wiper, which with small pressure. Of course, we can reduce a size.


3. Vibration/ shaking.


The glass window is dirty, and wiper works under the abnormal; 

The rubber with dirt, please use the wet soft paper to clean the rubber before it works.

The rubber was broken or wiper doesn’t fit with wiper arm closely for they installed not so well.

The wiper arm with small pressure, makes the wiper is not so match with glass closely, meanwhile, the wind influence the wiping when driving.


4. The drop of water

After wiping, some drops of water on the glass, that is for car wax, please clean the glass window. 


5.The glass window is foggy after wiping, drops water, streak, or part of foggy.

This is for oil film, dirt, or car wax. You don’t need to change the wiper, please clean the glass window & wipers.


6. The streak

The glass window or wiper rubber is dirty with granule, please clean the glass window and rubber with wet soft towel.


7. The middle part with streak


The problems is wiper arm with heavy pressure, e.g. European brand car, BMW, Benz, Audi, etc. This time, please add one size, just like the original wiper is 19”, uses 20”. There is another way to handle, bend the wiper arm to be more flat or level by vise.


8. Shrill noise


When the wiper sweeps occur irregularly, mostly due to the wear strips, arm and bracket damage caused by deformation aging strip.

Of course, the wipers wiping very clean, at first time with shrill noise, after several times will be ok.

Without water to working, the wiper also with shrill noise, so please spray water to wipe.

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