Q: How Does a Rain-Sensing Wiper System Work?
How does a rain-sensing wiper system work?
Rain-sensing wipers operate based on an infrared light mounted by the rear-view mirror. A light beam is reflected off the windshield at a 45-degree angle. If there is rain, snow, or something else on the windshield, less light reflects back to the sensor and the rain-sensing wipers turn on. The wiper system is still equipped with an override to control high and low speeds in the case of rain-sensing wiper malfunction.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
Service light turns on momentarily when I start my car
This light comes on every 7,500 miles to remind you to service your vehicle. This indicator is manually reset, however, and should not be used as a guideline for actual service. So, it doesn't mean anything is wrong with your...
The engine has no power and shakes a lot
Hello. If the engine is shaking that bad and has no power, then it may have a bad misfire (https://www.yourmechanic.com/article/how-can-problems-with-the-ignition-system-cause-misfiring_2). This can be caused by a bad spark plug (https://www.yourmechanic.com/services/spark-plugs-replacement), but it can also be caused by a bad sensor...
The mechanic said my son's car is leaking grease. What does this mean and what are the dangers?
Hey there. Your son's car has something called a constant velocity (CV) joint (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement) which is essentially the drive axle that transmits power from the transmission to the wheels. These CV joints have rubber boots that surround them to keep...
Where is the thermostat location for a 2013 Chrysler 200 2.4L
Hello, the thermostat on this engine is located at the "rear" (driverside of the car) of the cylinder head. It is somewhat covered up by the valve and cam housings above it, and is fairly difficult to access. There is...
When I start my car on a cold morning I have to pump the accelerator to get it to start.
As a general rule, car engines do not like cold weather and do not do operate as well in cold weather. When you start your car in the morning and turn the key to on, the coolant temperature sensor immediately...
I hear a rattling noise in the back of my car.I was told I need rear struts not sure which parts
Hi there. I would strongly recommend having a professional mechanic accurately diagnose the issue you're having if you are going to have a private, non-Mercedes Benz certified mechanic complete these repairs. By having one of our mobile mechanics come to...
Can a fuel cap cause my Chevy Tahoe to reduce engine power
Hi There, The check engine light (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) indicates that there is likely something wrong with the engine or transmission in your vehicle and will usually come on in conjunction with the vehicle going into the reduced power mode (https://www.yourmechanic.com/services/reduced-power-light-is-on-inspection). This...
in my 2006 Chrysler 300 a ESP/ABS light shows what is the reason and how do you fix it
Hi Stormykally. Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car’s ECU. When...
i am getting fault code P001477. How far/long can i drive without causing any damage to the engine.
Unfortunately, there is no way to determine specifically how long mechanical failures like this may last before failing entirely. As you know, code P001477 is related to the camshaft adjuster solenoid. When this is not functioning properly, this will cause...
Related articles
Are There Windshield Wipers that Work Better for Snow?
It It seems you can’t go wrong choosing wiper blades to use in warmer climates. Any wiper blade with a good quality rubber edge does the trick. When snow and ice enter the equation, suddenly your choice of windshield wipers...
5 Essential Things to Know About Storing Your Car
Even Even if your car will be sitting for a period of only a few weeks, it’s important that you take steps to store it properly or you will risk having mechanical problems crop up from disuse – some of...
How to Replace an EVP Position Sensor
The EGR valve is monitored by a valve position sensor. This sensor helps your car's EGR system to run more efficiently and better control emissions.
Browse other content
Services
Cities