Frozen branch

How to stop your car locks from freezing this winter

How do car locks freeze?

The most common reason car locks freeze in the UK is water seeping into the mechanism and then turning to ice when the temperature drops. This can happen through freezing rain, snow, or condensation. When the water inside the lock freezes, it causes the mechanism to seize up, stopping you from turning the lock or even inserting the key.

Most modern cars have central locking systems controlled by a fob, meaning you may not use the manual door lock often. However, the internal mechanisms are still susceptible to freezing, locking up when you least expect it.

What problems can frozen car locks cause?

It’s also important to investigate how water is getting into the lock. A damaged door seal or faulty lock cover could be the culprit, allowing moisture in that eventually freezes. An automotive locksmith or mechanic can help identify and fix the issue.

How to prevent frozen car locks

Prevention is always better than cure. One of the simplest ways to avoid frozen car locks is to keep them well-lubricated. A dry lock is more prone to freezing, so use a lubricant like WD-40 or a silicone-based spray before the temperatures start to drop. You can also apply a thin layer of Vaseline to your key, insert it into the lock, and turn it a few times to spread the lubricant inside the mechanism.

Parking under cover, away from exposure to freezing rain or snow, is another good preventative measure. If you’re parking outdoors, try to choose a spot sheltered from the wind, which can increase the chill factor and make freezing more likely.

If you notice water getting into your lock, it’s crucial to get this checked out by a locksmith to prevent future freezing.

What to do if your car locks are frozen

If your car lock is already frozen, don’t panic. A de-icer spray can help, particularly those that come with a long nozzle for precision application. However, be cautious not to let the de-icer contact your car’s paintwork, as it can cause damage. Wipe off any excess immediately.

As a last resort, oil-based lubricants can be used, but these too can damage paint if not used carefully. If you find the lock is damaged beyond repair, an automotive locksmith can come to you and replace the lock, ensuring you’re back on the road swiftly.

Other issues that may seem like frozen locks

Frozen locks aren’t the only reason you might have trouble getting into your car on a cold morning. Here are some other potential culprits:

  • Dead car battery – Your car’s central locking is powered by its 12-volt battery. If the battery is flat, the fob won’t work, and you’ll need to use the manual lock.
  • Flat key fob battery – If your key fob’s battery is dead, the buttons won’t operate the central locking. However, you should still be able to use the manual lock with the key blade.
  • Frozen door seals – Wet door seals can freeze and stick to the frame, making it difficult to open the door. Gently push the door to break the ice, but take care not to slip on icy ground.
  • Broken door handle – If the handle itself has broken, try another door to see if the problem persists.

In many cases, your car battery or key fob battery will need to be replaced every few years, especially as they tend to underperform in colder weather. It’s wise to stay ahead of the issue before winter fully sets in.

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Whether you need an emergency locksmith or a routine inspection, Carsmith Midlands is just a call away.