• iconNews
  • videos
  • entertainment
  • Home
  • News
    • UK News
    • US News
    • Australia
    • Ireland
    • World News
    • Weird News
    • Viral News
    • Sport
    • Technology
    • Science
    • True Crime
    • Travel
  • Entertainment
    • Celebrity
    • TV & Film
    • Netflix
    • Music
    • Gaming
    • TikTok
  • LAD Originals
    • Say Maaate to a Mate
    • Daily Ladness
    • Lad Files
    • UOKM8?
    • FreeToBe
    • Extinct
    • Citizen Reef
  • Advertise
  • Terms
  • Privacy & Cookies
  • LADbible Group
  • UNILAD
  • SPORTbible
  • GAMINGbible
  • Tyla
  • UNILAD Tech
  • FOODbible
  • License Our Content
  • About Us & Contact
  • Jobs
  • Latest
  • Topics A-Z
  • Authors
Facebook
Instagram
X
Threads
Snapchat
TikTok
YouTube

LAD Entertainment

YouTube

LAD Stories

Submit Your Content
Weird circle on your car dashboard actually has a purpose

Home> Community

Updated 20:52 1 May 2024 GMT+1Published 20:45 1 May 2024 GMT+1

Weird circle on your car dashboard actually has a purpose

It has one of the most important jobs in your car

Joshua Nair

Joshua Nair

Nowadays, even the average car is littered with some great features, when just a few years ago only the top-end vehicles would be blessed with things like a Sat Nav or a touchscreen control centre.

We really are spoilt with how much cars come with these days, as the latest technology makes its way into the interior and often the exterior of models around the world.

One example of outstanding modern day engineering are the frits on your windscreen - almost every car has them, but without explicitly looking for them, you wouldn't notice.

Advert

But by preventing the Sun from damaging the adhesive that connects your window and windshield, they provide structure and safety to your vehicle.

But there's a feature on some older cars that you probably won't know much about, despite definitely seeing it before.

It's that weird circular panel on the dashboard.

Have you noticed the little circle before? (YouTube/BT Build Things)
Have you noticed the little circle before? (YouTube/BT Build Things)

Well, it's called a solar or sunload sensor.

Advert

It looks like a round knob at the back of your dashboard, and though most are circular, some can stick up, and others blend in with the surface - the point is, it's there.

It turns out that its role in your car is quite important, even though someone has probably never explained it to you before.

Auto Service World, a Canadian automotive aftermarket industry magazine, revealed exactly what it is, and how it help us in our cars.

The site explains: “Sunload sensors are usually located at the top of the dash and are often mounted on a removable plate, speaker grill, or defroster vent,

“There is often one on either side of the dash to accommodate differences in sunlight exposure.”

Advert

As its name entails, it is responsible for monitoring how much sunlight reaches the inside of your vehicle, and it's a crucial part of the climate control system.

“Sunload sensors monitor the intensity of sunlight and adjust the HVAC [heating, ventilation, and air conditioning] control to improve the comfort level of the driver and passengers on sunny days,” Auto Service World adds.

You can thank that tiny circle on your dashboard for the cool air-conditioning in the summer. (Getty Stock Image)
You can thank that tiny circle on your dashboard for the cool air-conditioning in the summer. (Getty Stock Image)

“Bright sunlight conditions can result in the fan speed increasing, and blend doors opening to improve cooling,” the site continues.

Essentially, it works with something called a photodiode, a semiconducting diode which converts photon radiation, into electrical current - and in this situation, the photon radiation is visible light.

Advert

So as the light intensity increases, the resistance of the diode does as well, which unfortunately means that fewer volts make it to the car's smart internal monitoring systems.

The control module then takes this sign as a signal to boost the air-conditioning preventing you from getting cooked in a metal box.

But your car may have a faulty HVAC system, which puts you at risk of overheating in your vehicle due to the system being unable to sense the heat.

“Sunlight entering a vehicle can account for up to 60 percent of the interior heat load that the system must overcome,” Auto Service World states.

Basically, that little thing on your dashboard is one of the most important features in your car, as it keeps the environment at a comfortable temperature and away from overheating.

Advert

Thanks, sensor.

Featured Image Credit: Getty Stock Image / YouTube/BT Build Things

Topics: Science, Weird, Technology, Cars

Joshua Nair
Joshua Nair

Joshua Nair is a journalist at LADbible. Born in Malaysia and raised in Dubai, he has always been interested in writing about a range of subjects, from sports to trending pop culture news. After graduating from Oxford Brookes University with a BA in Media, Journalism and Publishing, he got a job freelance writing for SPORTbible while working in marketing before landing a full-time role at LADbible. Unfortunately, he's unhealthily obsessed with Manchester United, which takes its toll on his mental and physical health. Daily.

X

@joshnair10

Advert

Advert

Advert

Choose your content:

17 hours ago
a day ago
3 days ago
  • 17 hours ago

    Woman’s mukbang video inhaling entire claw of lobster is leaving people seriously unsettled

    Users on social media have been shocked by the viral mukbang footage

    Community
  • 17 hours ago

    Woman who runs legal brothel shares the 'one truth' she has found out from industry

    Former PhD student Catherine De Noire manages one of Europe's largest brothels

    Community
  • a day ago

    Therapist explains five 'subtle' signs your relationship could be ending soon

    Time for a hot girl summer?

    Community
  • 3 days ago

    American living in the US is dedicated to becoming a fully blown scouser

    People reckon the lad is doing a decent job at morphing into a Liverpudlian

    Community
  • World's 'first flying car' is going on sale much sooner than you think
  • Airline once crashed a Boeing plane on purpose to find out what the safest seat was
  • People are just discovering what the black dots on car windscreens are actually for
  • Archaeologists think they’ve found a 3,200-year-old mysterious stone circle that inspired Stonehenge