What Does the Rain and Light Sensor Warning Light Mean?

What Does the Rain and Light Sensor Warning Light Mean?

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

More related articles

How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...

Related questions

Q: Started backing out of my driveway and it stalled and wont start. Just turns over. All plugs fire and I hear the fuel pump come ob

For an issue like this, have the computer scanned to see if a code is set to cause the no start. Check to see if you have injector pulse to open the injectors. Check fuel pressure at the fuel rail...

Q: Severe damage to rim impacting brake system

Wow, a rim failure like that can be a scary issue. It is recommended that you call GM customer service and file a report with them since your car is still most likely under warranty. They may send a rep...

Q: What does the charging system Warning Light mean in a Hyundai Elantra?

The charging system Warning Light is located on the instrument panel. This light illuminates when there is an issue with either the electrical charging system, or the generator. When this light comes on, you should have your vehicle serviced as...