As the summer sun shines brightly, bringing warmth and longer days, it also brings a set of challenges for car owners. One often overlooked issue is the effect of high temperatures on car locks. At Parker Auto Locksmiths, we understand the importance of keeping your vehicle secure and functional, no matter the season. In this blog, we will explore common summer car lock problems and provide practical solutions to fix them, ensuring your car remains safe and accessible all summer long.

Heat-Related Lock Problems

1. Lock Expansion and Contraction

Metal components in car locks can expand and contract with temperature fluctuations. In the summer heat, locks may expand, causing them to become stiff or difficult to operate. This can lead to key jamming or even breakage if forced.

Solution: To mitigate this, regularly lubricate your locks with a graphite-based lubricant. This reduces friction and allows for smoother operation. Avoid using oil-based lubricants, as they can attract dirt and grime, leading to further complications.

2. Key Fob Malfunctions

High temperatures can affect the electronic components of your key fob. Heat can drain the battery faster, or in some cases, cause the circuitry to malfunction, rendering the key fob useless.

Solution: Always keep a spare battery for your key fob in your car. Store your key fob away from direct sunlight, such as in the glove compartment or another shaded area.

If your key fob does malfunction, a professional locksmith can reprogram it or provide a replacement.

Common Lock Issues and Fixes

1. Key Getting Stuck in the Lock

During the summer, the internal mechanism of the lock can expand, making it more difficult to insert or remove the key. This can lead to the key getting stuck, potentially breaking if too much force is applied.

Solution: Gently wiggle the key while applying light pressure to remove it. If this does not work, avoid using excessive force and contact a professional locksmith to safely extract the key. Regularly cleaning and lubricating the lock can prevent this issue.

2. Lock Cylinder Issues

Dirt, dust, and debris are more prevalent in the summer and can get into the lock cylinder, causing it to jam. Additionally, the heat can cause the lock cylinder to misalign, making it difficult to turn the key.

Solution: Use a can of compressed air to blow out any debris from the lock cylinder. Follow this by applying a graphite-based lubricant. If the lock cylinder remains misaligned, a locksmith can realign it and ensure it functions correctly.

3. Broken Keys

Keys can become brittle over time, and the summer heat can exacerbate this issue. A brittle key is more likely to break off in the lock, leaving you stranded and unable to access your vehicle.

Solution: Inspect your keys regularly for signs of wear and tear. If you notice any cracks or bends, replace the key before it breaks. If a key does break in the lock, a professional locksmith can extract the broken piece and provide a replacement key.

Preventive Measures

1. Regular Maintenance

Regular maintenance of your car locks can prevent many summer-related issues. Schedule routine check-ups with a professional locksmith to ensure all locks and keys are in good working condition.

2. Use Sun Shades

Protect your car’s interior, including the locks, from extreme heat by using sun shades. These can help maintain a cooler temperature inside your vehicle, reducing the likelihood of heat-related lock problems.

3. Avoid Direct Sunlight

Whenever possible, park your car in shaded areas or use a car cover. This not only protects your locks but also preserves the overall condition of your vehicle.

4. Keep Spare Keys

Having a spare key can save you from lockout situations. Keep a spare key in a safe and accessible place, such as with a trusted friend or family member.

When to Call a Professional

While many minor lock issues can be resolved with DIY solutions, some problems require the expertise of a professional locksmith. If you encounter any of the following situations, it’s best to seek professional assistance:

  • Your key is broken or stuck in the lock, and you cannot remove it.
  • The lock cylinder is misaligned and does not function properly.
  • The key fob malfunctions, and you are unable to reprogram it.
  • Regular maintenance has not resolved the lock issues.

At Parker Auto Locksmiths, we offer comprehensive car lock services, from key extraction and lock repairs to key fob programming and replacement. Our experienced locksmiths are equipped with the latest tools and technology to handle any lock-related issue, ensuring your car remains secure and accessible.


Summer brings unique challenges for car locks, but with the right preventive measures and timely maintenance, you can avoid many common problems. By staying proactive and addressing issues as they arise, you can enjoy a worry-free summer on the road. At Parker Auto Locksmiths, we are dedicated to providing top-notch locksmith services to keep your vehicle safe and secure.

For more information or to schedule a maintenance check, contact Parker Auto Locksmiths today. Let us help you keep your car locks in perfect working condition, so you can focus on enjoying the summer season!