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How to Repair a Dead Car Key

Sometimes extreme cold or heat can cause the car key to stop functioning properly. Take a moment before replacing it.

It's a real pain when your car keys break and it happens at the most inconvenient times! You can fix a broken key without needing to purchase another one.

Dead Key Fob Batteries

Modern key fobs allow us to unlock doors, trunks and tailgates without the need to search for a key in the car. Some key fobs have an inbuilt key that can be utilized to start our vehicles. However, these fobs are dependent on a small battery that powers their remote functions. If the battery fails, then the key fob can no longer transmit the signal needed to turn on the vehicle. There are a variety of ways to repair a dead car key fob.

First, try to find out if your key fob is actually dead. If it seems to be, you'll require a replacement battery. You can do this yourself by taking the key fob off its clip or using a small flat head screwdriver to break it. Be cautious not to apply too much pressure or you may cause damage to the fob. It's also important to make sure you're replacing the correct battery type. Most key fobs use CR2032 3-Volt batteries, but certain models might require a different type. You can find out what kind of battery your vehicle requires in the owner's manual, or go to an Interstate All Battery Center and have a battery specialist help you.

You may be able to revive the key fob that's dead by moving closer to the car. The majority of key fobs employ RFID (radio frequency identification), which only works within a narrow distance. The ignition system has to be able to detect the signal. key repairs can unlock your car or even start it if you move couple of inches closer.

Many car manufacturers have backup systems that can be activated if the battery of the key fob is low. Ford, for example has a slot which is devoted to the key fob. When inserted correctly, the key fob will activate the engine of the car. You can find the instructions in your owner's guide on how to locate the slot and insert the key fob correctly. If you are unable start your car using this method, make sure to call roadside assistance for assistance.

Broken Key Ring

The internal chip of the key fob communicates to your car's immobilizer to allow it to start the motor. This chip can be damaged or there might be programming errors. If this occurs, your key fob won't be able to send the correct identification code, and your car won't begin. In some instances, a faulty transponder key can be caused by physical damage or wear and tear on the key shell or contact pads.

Usually when the key fob begins to fail to communicate with the vehicle's immobilizer system and you notice specific warning signs on the dashboard. These can include errors messages, a flashing light or the key not locking or unlocking the vehicle. If you observe any of these warnings, contact your local locksmith right away to repair your key fob or replacement.





If you carry a lot of keys, it's easy to scratch your key ring. This can cause the key fob to snap in half this is one of the most common causes of broken car keys. You can use super glue on both sides of the crack and gently press them together to repair the issue. Make use of a gel-type glue that dries slowly in order to avoid drips or runniness.

If this method does not work, it is important to contact an experienced locksmith immediately to avoid further damage to your car. A locksmith who is qualified will be able repair or replace your fob swiftly and ensure that the ignition and door locks do not get damaged during the process.

It can be a bit frustrating when your key fob is damaged. However, it's not a reason to panic or be annoyed. Instead, you can take proactive measures to reduce the risk of your key fob rupturing again in the future, such as regular maintenance, using key protectors and keeping an extra key. Quicksmith's team is ready to assist you in the event that your key fob fails.

Broken Key Loop

One of my MK5 keysfobs broke off the tiny key ring that is at the top, which is where it connects to the keyfob. It's made of plastic or metal that is soft. I've made a hole, then wet-sanded the area to make it more durable. But I'm guessing that's not helping.

I've also attempted to wrap the broken part of ring with clear tape but it didn't look to be any better. This is a pity, as I use the little split ring to keep my keys in the right place.

If the key fob case itself is broken It's usually possible to remove the case and replace the battery (assuming the battery isn't already dead). There are online kits available for this, but they usually only offer a temporary fix - it might be better to bring it to a professional who will swap out the battery and reprogram the key fob. Alternately, you may be able to locate a replacement case at the home improvement store or a locksmith. They are not likely to cost as much as an entirely new key fob.