What Does the Rain and Light Sensor Warning Light Mean?

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Most modern cars are packed with technology from cameras and radars to swiveling headlights. Nowadays, cars are equipped with weather detecting sensors as well. Typically located in the glass of the windshield near the rear view mirror, these sensors can detect rain on the windshield and analyze the overall brightness outside. The main function of these light sensors to control the automatic headlights. When the sensor sees that it is getting dark outside, it will tell the computer to flip on the headlights. The rain sensor can similarly use light to detect when there is rain on the windshield or it can sense the impact of the rain hitting the glass.

A corresponding warning light can be found on the dashboard if there is an issue present.

What the rain and light sensor warning light means

This light is typically yellow and may vary between different vehicles so look in your owner’s manual to see what it looks like for your specific vehicle. When illuminated, an issue has been detected by the computer and the systems will be deactivated temporarily.

However, you will still be able to change your lights and wipers manually even when this light is on. Also, a code will be saved to help identify the problem. Common problems can be caused by malfunctioning sensors or by replacing the windshield with non-factory glass. As mentioned earlier, these sensors are located inside the glass of the windshield and if you don’t buy the correct type of glass, these systems will not function properly. Once you have fixed any problems the light should go out automatically.

Is it safe to drive with the rain and light sensor warning light on?

As long as your vehicle’s headlights and wipers still work manually, you are good to go. It’s important to know how to work your headlights and wipers in case the light does not turn on on its own during a thunderstorm. Relying blindly on automatic systems like these all the time could get you in trouble at some point if you are not prepared.

If your rain and light sensor warning light is on when there is no rain or when it is still bright outside , our certified technicians can help you identify any problems.


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Matthew

32 years of experience
727 reviews
Matthew
32 years of experience
Chevrolet Impala - Warning Light is on - Norfolk, Virginia
First off he was on time....actually 30 mins early which was great. Everything he described was what I was going through and he knew exactly what I needed before he even looked at the car. Other mechanics i feel were trying to take advantage because I am a woman but he made me feel comfortable. Still have to get work done on it but at least I know exactly what the problem was.
Chevrolet Tahoe - Warning Light is on - Norfolk, Virginia
Very detailed and takes the time to explain what is being done. Willing to answer any questions you may have. I would definitely use his services again and have already been telling my coworkers about this site. I have a unique electrical situation going on with my truck that none of the dealers could assess. Just by Matt doing some general maintenance , my truck is already driving smoother. Matt asked that I monitor things to make sure we don't need to troubleshoot anything else. I feel quite confident.

Michael

20 years of experience
38 reviews
Michael
20 years of experience
Chevrolet Cruze - Warning Light is on - Upland, California
Thank you Michael for all your help and patience. Once this job is completed I will definetly request you again!!!

Quentin

18 years of experience
15 reviews
Quentin
18 years of experience
Volkswagen Tiguan - Warning Light is on - Nottingham, Maryland
Quentin was very professional and meticulous with locating the issues with my car. Great spirit and explained and answered all of my questions.

Travis

12 years of experience
77 reviews
Travis
12 years of experience
Mercedes-Benz C230 - Warning Light is on - Charlotte, North Carolina
Travis came out to determine cause for the Check Engine light. He did so and told me what needed to be done and the cost.

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