A number of drivers have been turning to the internet for advice over a little button they spotted on their rear-view mirror - and they were surprised to learn what it really does
Are items hanging from rearview mirrors illegal in California?
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I'm a car expert - most drivers don't know the hidden functions in their car, a secret key turn can keep your child safe
Drivers warned cars have a secret button under rear view mirror which could save lives if used correctly
Woman shows how the 'mystery button' on your rearview mirror could actually save your life
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Drivers are only realising a secret button exists behind your mirror that is 'life-changing' - Chronicle Live
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