A ‘magic’ button defrosts a car’s windshield in seconds – and some drivers had no idea | April 5, 2025

Winter mornings are often dreaded by motorists. Who has never cursed a frozen windshield, a scraper in hand, freezing fingers, and a ticking watch? However, a simple and quick solution is often right under our noses, without us really knowing it.

The magic button: where is it hiding?

Most modern cars are equipped with a front demister button, designed to quickly defrost the windshield. This button activates a blower combining hot air and air conditioning, effectively eliminating frost.

How to use it?
Start your car’s engine.
Set the temperature to maximum.
Press the button dedicated to the front demister.
Wait a few seconds: the frost melts as if by magic.

This system heats the windshield from the inside while causing fogging, making the effort of scraping useless.

Why is this tip still unknown?

Many drivers have not explored all the features of their vehicle or continue to rely on traditional solutions such as the scraper or warm water. However, this button has undeniable advantages:

Safety: avoid thermal shocks that could crack the glass.
Speed: the system acts in just a few seconds.
Effectiveness: prevents fogging during the journey.
Some tips for optimal defrosting
Turn on the air conditioning: even in winter, it helps reduce humidity.
Keep your windows clean: dirty windows keep fogging up.
Always stay nearby: leaving the engine running unattended can be risky, or even prohibited in some cases.
The alternative for older cars

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