Tiny button on your car mirror actually has a purpose that few drivers know about

Tiny button on your car mirror actually has a purpose that few drivers know aboutA woman has taken to TikTok to reveal that the small button located on car rear view mirrors actually has a function - and it's come as a surprise to a lot of peopleNewsGemma Strong Features Writer12:43, 21 Apr 2026View 3 ImagesA little known car mirror hack could make driving safer and more comfortable(Image: Getty Images)Drivers have been surprised to discover a hidden feature on the rear view mirrors in their cars - and it could save lives. A viral TikTok video has shed light on the little-known function, and it seems there's always something new to learn about our vehicles.‌The clip, posted by user @chequanxiaoqiao, highlighted the purpose of a small, often-overlooked button on car mirrors. In the video, she explains: "The lights of the rear car are too dazzling when driving at night.‌"We just need to press this little wrench under the rear view mirror-you can turn on the anti-glare function." This little adjustment is designed to reduce glare from the headlights of vehicles behind you - by flipping the lever or pressing the button, you can dim the reflection and make night time driving safer.‌READ MORE: I'm a baggage handler and one type of suitcase is less likely to be thrownREAD MORE: 'Never throw away' old Ikea furniture as ITV expert says 'you can get money back'View 3 ImagesThe button on a rear view mirror has a useful purpose - but not many people know about it(Image: Getty Images/iStockphoto)The video has racked up hundreds of thousands of views, sparking a flurry of comments. One viewer remarked: "Wait a minute. You mean to tell me there was an anti-glare function all the nights I nearly drove off the road."Another added: "Why am I learning this now?" And a third wrote: "This is game changing, I am a cab driver and work all hours so will definitely try it out at night."‌It comes after an expert...