The AA has issued a strong caution to the public on the proper way to de-ice their vehicles during the winter season. With the UK currently facing its initial snow and ice of the year, yellow and amber weather alerts have been issued nationwide.
As temperatures dip into negative figures, reaching -6.1°C in Cumbria, -5.8°C in Wales, and -4.8°C in certain parts of Scotland, weather warnings have been raised for 47 regions, with a rare amber alert for snow.
The chilly conditions also mean dealing with icy car windshields in the morning rush. Many drivers may unknowingly be making a critical mistake when trying to clear the frost quickly.
While some opt for using water to speed up the de-icing process, this method can actually do more harm than good. The practice of using hot water is widely known to risk damaging the windshield, but even lukewarm water is advised against by the AA.
The AA’s official guidance warns that glass can crack when exposed to hot or warm water, especially in cold temperatures, even if it’s just lukewarm. Moreover, using water can lead to the formation of additional ice, as warm water freezes faster than cold water.
The risk of causing damage extends to the wipers, as water can freeze on them, potentially harming the wiper motor or damaging the rubber blades if they are turned on.
Even using cold water for de-icing poses risks, as it can freeze on the windshield and cause damage, according to the AA. The organization recommends a safe and efficient method for defrosting vehicles quickly.
Their recommendations include ensuring wipers are off before starting the engine, directing warm air toward the windshield, activating the rear window heater and heated mirrors, and using air conditioning to prevent misting up.
Waiting inside the vehicle while the engine warms up will gradually thaw the frozen windshield, allowing for easy removal of snow. A soft brush should be used to clear the front grille and headlights, while a scraper and de-icer can be used on all windows.
The AA emphasizes the importance of waiting until all windows are completely clear before driving off, advising to use car heaters, air conditioning, proper tools, and patience for a safe de-icing process.