Fix Broken Car Key Plastic Top: Quick and Easy Solutions

To fix a broken car key plastic top, you can try gluing the pieces together using a strong adhesive, such as super glue, and then allowing it to dry completely. A broken car key plastic top can be a frustrating problem to deal with.

The key plays a crucial role in starting your vehicle and ensuring its security. When the plastic top gets damaged or breaks off, it can hinder your ability to use the key effectively. However, there are simple solutions available to fix this issue and get your key working again.

We will explore how to repair a broken car key plastic top using a strong adhesive. By following these steps, you can save yourself the hassle and expense of replacing your entire key.

Reasons For Plastic Car Key Top Breakage

Plastic car key tops can break due to wear and tear, improper handling, or accidental damage. To fix a broken car key plastic top, it is recommended to consult a professional locksmith for repair or replacement.

Below are the most common causes for plastic car key top breakage:

Impact Of Everyday Use

  • Twisting and turning: Constantly twisting and turning the car key puts strain on the plastic top, making it susceptible to breakage.
  • Inserting and removing: Repeatedly inserting and removing the key from the ignition can weaken the plastic top over time.
  • Forceful handling: Excessive force or rough handling of the key can cause stress fractures in the plastic, leading to eventual breakage.

Exposure To Extreme Temperatures

  • Cold weather: Exposure to extreme cold temperatures can make the plastic top brittle and prone to cracking or breaking.
  • Hot weather: Similarly, exposure to high temperatures can cause the plastic top to expand and become more susceptible to damage.

Poor Quality Materials

  • Cheap plastic: Keys made from low-quality plastic are more likely to break due to their lack of durability.
  • Weak plastic mold: Inadequate manufacturing processes or molds that do not properly fortify the plastic can result in key tops that easily break.

Signs Of A Broken Car Key Plastic Top

One of the signs that your car key plastic top is broken is when it becomes loose or wobbly. To fix this issue, you can consider replacing the plastic top with a new one to ensure proper functionality and avoid any inconvenience while using your car key.

Here are some signs to watch out for that indicate a broken car key plastic top:

Loose Or Wobbly Key Top:

  • When you hold your car key, you notice that the plastic top feels loose or wobbly.
  • The key top may move independently of the key itself when you handle it.
  • This can be an early indication that the plastic top is cracked or damaged, affecting its stability.

Visible Cracks Or Damage:

  • Inspect your car key plastic top carefully for any visible cracks or signs of damage.
  • Cracked or broken plastic can compromise the structural integrity of the key top, making it vulnerable to further damage.
  • If you notice any splits, chips, or other forms of visible damage, it’s important to address the issue before it worsens.

Difficulty In Turning The Key:

  • When inserting the car key into the ignition or door lock, you experience difficulty in turning it smoothly.
  • A broken plastic top may affect the alignment and movement of the key, leading to friction and resistance.
  • If you find yourself struggling to turn the key or experiencing a stiff lock mechanism, it may be due to a broken car key plastic top.

Identifying the signs of a broken car key plastic top is crucial for ensuring the proper functioning of your vehicle’s key. If you notice a loose or wobbly key top, visible cracks or damage, or difficulty in turning the key, it’s essential to address the issue promptly.

Consulting a professional locksmith or contacting the car key manufacturer can help you find a solution and restore your car key’s functionality.

Diy Solutions For Fixing A Broken Car Key Plastic Top

Discover simple DIY solutions to fix a broken plastic top on your car key. Easily repair and save money with these practical tips for fixing a broken car key plastic top.

Read on to discover the step-by-step processes for each solution.

Using Adhesive

Using adhesive is one of the easiest and most cost-effective ways to fix a broken car key plastic top. Here’s how you can do it:

  • Selecting the right adhesive for plastic: Choose an adhesive specifically designed for plastic materials. Look for adhesives that offer strong bonding and flexibility.
  • Cleaning the broken parts of the key: Start by cleaning the broken pieces of the key, removing any dirt or debris. Use a mild detergent and warm water to ensure a clean surface.
  • Applying adhesive to reattach the top: Apply a small amount of adhesive to both the broken parts of the key and the plastic top. Make sure to spread it evenly for optimal bonding.
  • Allowing sufficient drying time: Press the broken pieces together firmly and hold them in place for the recommended drying time mentioned on the adhesive product. This will ensure a secure and long-lasting fix.

Using Epoxy Resin

Epoxy resin provides a strong and durable solution for fixing a broken car key plastic top. Follow these steps to repair your key:

  • Preparing the broken key and epoxy resin: Clean the broken parts of the key and gather the necessary epoxy resin. Ensure that you have equal amounts of resin and hardener for a proper mixture.
  • Mixing the epoxy resin and applying it to the key: Mix the resin and hardener according to the manufacturer’s instructions. Apply a thin layer of the mixture to the broken parts of the key.
  • Pressing the broken pieces together firmly: Carefully align the broken pieces of the key and firmly press them together. Hold them in place for a few minutes to allow the epoxy resin to bond properly.
  • Allowing the resin to cure completely: Leave the repaired key untouched for the recommended curing time specified by the epoxy resin product. This will give the resin enough time to harden and create a strong bond.

Replacing The Plastic Top

If the damage to your car key’s plastic top is severe or irreparable, you may need to replace it entirely. Follow these steps to replace the plastic top:

  • Finding a replacement key top: Look for a suitable replacement key top that matches your car key’s brand and model. You can find these either from the car manufacturer or from third-party suppliers.
  • Removing the old plastic top: If the old plastic top is still attached to the key, gently pry it off using a flat-bladed screwdriver or similar tool. Be careful not to damage any other components of the key during this process.
  • Attaching the new key top securely: Take the new plastic top and align it with the key. Press it firmly into place, ensuring that it sits securely and flush with the key’s surface.
  • Testing the newly replaced key: Try the newly replaced key in your car’s ignition to ensure that it functions correctly. If everything looks good, your car key is ready to go.

Tips For Preventing Broken Car Key Plastic Tops

Prevent broken car key plastic tops with these helpful tips. Keep your car key in a protective case, avoid excessive force when using it, and consider getting a spare key to reduce wear and tear. Regular maintenance and occasional lubrication can also extend the lifespan of your key.

  • Avoid applying excessive force to the key: The plastic tops on car keys are prone to breakage when too much force is applied. To prevent this, use gentle pressure when turning the key in the ignition or opening doors. Applying excessive force can cause the plastic top to crack or snap off completely.
  • Store and handle the key with care: Properly storing and handling your car key can help prevent damage to the plastic top. Avoid throwing the key into bags or pockets with other sharp objects that can scratch or break the plastic. Consider using a keychain or a protective case to keep the key safe when not in use.
  • Keep the key away from extreme temperatures: Extreme temperatures can cause the plastic top to expand or contract, making it more susceptible to breakage. Avoid leaving your car key in direct sunlight or in freezing temperatures for extended periods of time. Instead, store it in a cool, dry place to maintain its integrity.
  • Regularly clean and maintain the key: Dust, dirt, and debris can accumulate on the key, which may weaken the plastic top over time. Clean your car key regularly using a soft cloth or a mild cleaning solution. Additionally, inspect the key for any signs of wear or damage, such as cracks or loose parts. Promptly address any issues to prevent further damage.


In a nutshell, fixing a broken car key plastic top is a DIY task that can save you money and hassle. By following the simple steps mentioned earlier in this blog post, you can easily replace the plastic top of your car key and restore its functionality.

Remember to gather all the necessary materials, including a replacement plastic top and a screwdriver, and take your time to carefully remove the broken part and attach the new one securely. This will ensure that your car key remains intact and functional, allowing you to lock, unlock, and start your vehicle without any issues.

Don’t let a broken plastic top cause unnecessary inconvenience – take action and fix it yourself with confidence!

Relevant post to read

Leave a Comment