9 ways to prevent your car lock from jamming

Last Updated on February 11, 2025 by Alan Weir

As an expert car locksmith with years of experience under my belt, I can’t count the number of times I’ve been called out to help someone whose car lock has jammed unexpectedly. It can happen at the most inconvenient times—perhaps you’re rushing to a meeting or heading out for a weekend adventure. The last thing you want is to find yourself wrestling with a stubborn lock. But fear not! There are several steps you can take to prevent your car lock from jamming in the first place. Here are nine practical tips that, if followed, could save you a lot of hassle down the line.

1. Regular Maintenance of Locks

Just like any other part of your car, locks benefit from regular maintenance. Dust, dirt, and grime can accumulate in the lock mechanism over time, causing it to falter when you least expect it. A simple weekly wipe-down of your key and a quick spray of a lock lubricant can go a long way to keep things moving smoothly. I recommend using a silicone-based lubricant because it repels moisture and doesn’t leave behind a sticky residue.

2. Avoiding Ice Build-Up

Living in the UK, we know that winter can be a brutal time not just for us, but also for our cars. When the temperatures drop, moisture can freeze inside your locks, making it almost impossible for your key to turn. To prevent ice build-up, consider investing in a lock de-icer spray. These sprays are formulated to quickly melt ice, saving you from fumbling around outside your car on a cold morning. Alternatively, when you know icy weather is approaching, park in a garage or a sheltered area whenever possible.

3. Keep Your Key in Top Condition

Believe it or not, the condition of your car key can have a direct impact on whether your lock gets jammed. If your key has nicks, bends, or any form of wear and tear, it may not align properly with the pins in the lock. Regularly inspect your key and replace it if necessary. It doesn’t hurt to have a spare key, either—just in case one gets lost or damaged.

4. Lock the Door Properly

This might sound simple, but you’d be amazed at how many people accidentally force their car locks. If you’re in the habit of slamming the door shut, the impact can shift the internal components of the lock and cause long-term damage. Instead, be gentle when closing your door and ensure that it’s fully closed before you move away. This helps to maintain the integrity of the lock and keeps everything in alignment.

5. Use the Right Key

With so many duplicates available, it’s tempting to have spare keys made quickly and cheaply. However, those keys often lack the precision and durability of your original. Always use your factory-made key whenever possible. If you find yourself in need of a duplicate, seek out a reputable locksmith who uses high-quality materials and precise machinery to create an exact match for your key.

6. Control the Weather Inside Your Car

Temperature fluctuations inside your car can create condensation, which can lead to rust and, consequently, a jammed lock. If you often leave your car parked for extended periods, especially in damp conditions, consider using moisture absorbers. These products can help control humidity inside your vehicle, reducing the chances of rust developing in your locks.

7. Check for Wear and Tear Regularly

Every so often, take a moment to inspect the exterior of your locks and the area surrounding them. Look for any visible signs of rust, damage, or wear and tear. If you notice any discoloration around the lock, it can point to moisture getting in and causing trouble. The sooner you catch these issues, the less likely you’ll run into problems later on. If repairs are needed, it’s best to get in touch with a qualified auto locksmith who can assess the situation professionally.

8. Secure Your Vehicle Against Intruders

An often-overlooked factor that can lead to jammed locks is forced entry. If someone tries to break into your car, it could misalign or damage your locks irreparably. To reduce this risk, take precautions like parking in well-lit areas, using your steering wheel lock, or investing in an alarm system. These measures not only protect your belongings but also keep your lock mechanism safe from unnecessary damage.

9. Stay Aware of Environmental Factors

Our cars are constantly exposed to the elements, and this wear can lead to unexpected issues. For example, extreme temperatures can expand or contract the metal in your lock, leading to potential jams. Be aware of your local weather patterns and consider using a car cover if you expect particularly harsh conditions. Similarly, if you’ve just parked your car after a heavy rainfall, giving the locks a quick dry-off can help prevent water from seeping inside.

Preventing car lock jams might seem like a daunting task, but with these straightforward tips, you can save yourself from unnecessary stress. Regular maintenance and being mindful of your car’s environment are your best lines of defense. After all, a bit of proactive care can go a long way in keeping your car functioning at its best, allowing you to enjoy the open road without those pesky lock-related worries. So, remember to treat your car locks right, and they should serve you well for years to come.

Alan Weir of Weir Locksmiths - contributor to RevLock.co.uk
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Alan Weir – Master Locksmith with 30+ Years of Experience

Alan Weir is the founder of Weir Locksmiths and a Master Locksmith with over three decades of experience. Renowned for his expertise in home and automotive security, Alan has built a reputation for providing reliable and innovative locksmith solutions across the UK.

A certified member of the Master Locksmiths Association (MLA), Alan specialises in residential, commercial and automotive locksmith services including car key replacement, transponder programming, and advanced security systems. His dedication to the field has earned him thousands of satisfied customers and glowing reviews on platforms like Checkatrade.

Now contributing to RevLock, Alan shares his expert knowledge to all of RevLocks visitors.