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How to Repair a Dead Car Key Sometimes extreme heat or cold can cause the car key to not function properly. Take a moment before replacing it. If your car keys get damaged, it's a real trouble. It always occurs at the most inconvenient moment! You can repair a broken key without needing to purchase a new one. Dead Key Fob Batteries Modern key fobs allow us to unlock doors, trunks and tailgates easily without the need to search for a key in the car. Some key fobs have an inbuilt key that can be used to start our cars. These fobs are powered by a tiny battery. If the battery fails then the key fob will not be able to emit a signal that could be used to start the vehicle. Fortunately, there are many ways you can fix a dead key fob and get your car operating again. First, check if the key fob is actually dead. If it appears to be, then you'll need to replace the battery. You can do this yourself by removing the key fob from its clip or using a small flat head screwdriver to break it. You should not apply too much force, or you may damage the fob. Also, make sure that you're using the right kind of battery. Certain models may require a different battery. Find out the type of battery your car requires by consulting the owner's manual, or visit an Interstate All Battery Center and get a specialist in battery care to assist you. You can sometimes revive the key fob which isn't dead by moving it closer to the vehicle. Since most key fobs are RFID (radio-frequency identification) they only work at a short distance and must be near enough to allow the ignition system to recognize the signal. If you can move a few inches closer your car, it may unlock or even start. Many car manufacturers have a backup mechanism that can be activated when the key fob battery is dead. Ford for instance has a slot which is dedicated to the key fob. If it is properly inserted the key fob will activate the engine of the car. There are instructions in your owner's guide on how to locate the slot and insert the key fob correctly. If you're unable to start the car using this method, contact roadside assistance. Broken Key Ring The internal chip of the key fob is what transmits to your car's immobilizer to enable the motor. If this chip becomes damaged or there are programming mistakes, the key fob will not be able send the correct identification code, and your car won't start. In some instances a malfunctioning transponder key can be caused by physical damage or wear and tear on the key shell or contact pads. Often the moment the key fob begins to struggle with your vehicle's immobilizer system, you will see specific warning indicators on your dashboard. These may include warnings about errors, flashing lights or the key not locking the car. If you see these warnings, contact your local locksmith immediately to request a replacement key fob or repair. It is very easy to cause damage to your key ring when you put too much pressure on it, especially when carrying a lot of keys. This could cause the fob to crack in half. This is among the most common causes of a broken car key. If this happens, try to use super glue to fix the issue by applying a small amount of the glue on both sides of the break and pressing them in a controlled manner. Make use of a gel-type glue that is slow drying to prevent drips or runniness. If this method does not work, you need to contact an experienced locksmith immediately in order to prevent any further damage to your vehicle. This Web page will be able to replace or repair your key fob quickly, and they will be able to make sure that the ignition lock as well as the door lock aren't affected during the process. If your key fob is damaged, it can be frustrating and inconvenient. It is not a cause to be in a state of panic or anger. Instead you can take proactive measures to reduce the risk of your key fob breaking in the future. This includes regular maintenance including key protectors, and keeping a spare key. Quicksmith's team is available to assist you in the event that your key fob fails. Broken Key Loop One of my MK5 keyfobs is broken off the little key loop at the top of the loop where it joins 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 stronger. But I suspect that's not helping. I've also tried to wrap the broken part of the ring using clear tape, but that didn't seem much better. It's a shame as I use the rings to hold my keys on the little mini-split ring which holds the larger split rings for the other keyfobs. If the case of the key fob is damaged, you can usually open it and replace the battery if it isn't already dead. There are online kits for this, but they typically only provide an interim fix. It may be faster to bring it to a professional who will replace the battery and reprogram the key fob. You can also find the new case at a locksmith or home improvement stores. They're not likely to be as costly as an entirely new key fob.