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How to Repair a Dead Car Key Sometimes extreme heat or cold can cause a car key to not function properly. It is best to wait a few minutes before replacing it. It's a real pain when the keys to your car break, and it happens at the most difficult times! There are a variety of ways to repair a broken car key that won't require the purchase of a new key. Dead Key Fob Batteries Modern key fobs allow us to open doors, trunks and tailgates, without having to search for a key. Some key fobs even come with an inbuilt key that can be used to start our vehicles. These fobs are powered by a tiny battery. If the battery dies and the key fob dies, it can no longer transmit the signal to activate the vehicle. There are a variety of methods to repair a dead car key fob. First, check the condition of the key fob to determine if it's actually dead. If it appears dead, you'll have to replace the batteries. You can do it yourself by disconnecting the fob from its clip, or using a flat-head screwdriver. It is important not to apply too much force, or you could damage the fob. You should also make sure that you're using the right type of battery. Most key fobs use CR2032 3-Volt batteries, but certain models might require a different type of battery. You can determine what kind of battery your car requires by consulting the owner's manual, or you can visit an Interstate All Battery Center and have a battery specialist help you. If the key fob isn't dead, you can sometimes revive it by moving closer to your car. The majority of key fobs employ RFID (radio frequency identification), which only works at a short distance. The ignition system must be able to recognize the signal. You can unlock your car, or even start it if you move couple of inches closer. Many car makers have backup mechanisms that is activated when the battery for the key fob is dead. For example, most Ford models have a dedicated slot for the key fob which will start the engine when properly inserted. You can find the instructions in the owner's manual of how to locate this slot and insert the key fob correctly. If you're unable to start your car with this method, be sure to contact roadside assistance for assistance. Broken Key Ring The internal chip in the key fob is what communicates to the immobilizer on your car to enable the motor. The chip could be damaged or there may be programming errors. If this occurs your key fob will not be able to transmit the correct identification code and your car won't start. In some cases the problem with a defective transponder key can also be caused by physical damage or wear and tear to the key shell or contact pads. Often the moment a key fob starts to have trouble communicating with the vehicle's immobilizer system there will be specific warning signs on the dashboard. These may include error messages, flashing lights or the key not locking the car. If you are noticing any of these warnings, contact your local locksmith immediately to repair your key fob or replacement. If you have a lot of keys, it's easy to scratch the key ring. This could cause the key fob to break in half and is among the most common causes of car keys breaking. If this happens, try using super glue to fix the issue by applying a small amount of the glue to both sides of the split and then gently pressing them together. It is essential to make use of a gel-type glue that dries slowly to prevent drips or runniness. If repair car key remote isn't working, you should seek out a professional locksmith as soon as possible to prevent further damage to your vehicle. A qualified locksmith can replace or repair your key fob swiftly, and they will be able to ensure that the ignition lock and door lock are not affected by the process. If your key fob gets damaged it can be a hassle and a nuisance. It's not a reason for panic or frustration. You can make proactive steps to lessen the possibility of your key fob breaking in the near future. These include regular maintenance, key protectors and having a spare. Quicksmith's team is available to assist you if your key fob breaks. Broken Key Loop One of my MK5 keyfobs is broken off the tiny key loop on top of the loop where it joins the keyfob. Apparently it's made out of extremely soft plastic or metal. I've made a hole, then wet-sanded the surface to make it more durable. But I'm guessing that's not helping. I've also wrapped the broken part of the ring in clear tape, but that does not seem to do any good. It's a shame, because I use the little split ring to keep my keys in the right place. If the key fob's case is damaged, you can usually open it and replace the battery if it is not already dead. There are online kits available however they are only a temporary solution. It is more efficient to have it repaired by a professional. You can also find an updated case at the locksmith or home improvement stores. They're unlikely to cost as much as a new key fob.