RAC's Cardboard Trick: Simple DIY Fixes for Frozen Cars in -12.5C UK Freeze
RAC's simple cardboard trick for frozen car windscreens

As a bitter cold snap grips the nation, bringing temperatures as low as -12.5C, the RAC has issued urgent guidance to help British motorists tackle a host of common winter car problems. The automotive services company is advising drivers to employ a series of simple DIY fixes using everyday household items to avoid costly damage and stressful morning delays.

Prevent Windscreen Wiper Damage with Cardboard

The RAC has highlighted that wiper blades are particularly vulnerable during freezing conditions, working hard against gritted roads. Attempting to use wipers that are frozen to the glass can break the mechanism or even blow a fuse. To prevent this easily avoidable issue, the organisation recommends a remarkably simple solution.

Placing a piece of cardboard between the wiper blades and the windscreen overnight can stop them from sticking fast. This quick trick can save drivers precious time and prevent expensive repairs, offering an alternative to time-consuming de-icer sprays and scrapers for those rushing to work.

Thawing Frozen Screen Wash and Locks

Another frequent winter headache is frozen screen wash. If the reservoir bottle is frozen, the RAC suggests adding hot, but not boiling, water directly into it to thaw the solution. However, if the washer jets themselves are iced up, motorists may need to wait for the engine to warm sufficiently to melt the blockage.

For drivers confronted by doors frozen shut, panic is not necessary. The RAC advises keeping de-icer or a lubricant like WD-40 in a winter breakdown kit to help free the lock. Applying heat safely is the best method for defrosting; carefully using a hairdryer on a safe extension lead can work, but it must not be held too close to avoid melting plastic or damaging electronics.

"While you are trying to resolve this issue, try to keep the key itself in a warm place, as it should help with any remaining ice within the lock itself," the RAC adds, while firmly warning against using boiling water or scraping the ice from locks.

Using Your Car's Heating System Wisely

Frozen windows can also immobilise a vehicle. The recommended fix is to use the car’s internal heating system strategically. Once the engine has warmed up, and while still parked, drivers should direct the air vents towards the windows and select the hottest temperature setting. This should help restore normal operation, allowing windows to open and close again.

The RAC's timely advice, shared via the Manchester Evening News, comes as the UK faces ongoing freezing conditions, with further cold weather anticipated. By following these practical tips, motorists can navigate the winter freeze more safely and avoid the frustration of a car rendered unusable by the ice.