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How to Repair a Dead Car Key Extreme heat or cold can cause the car to stop functioning. Try waiting a little while before spending money to replace it. When your car keys break it's a huge hassle. And it always happens at the worst possible moment! There are a few ways to repair broken car keys that don't require a new one. Dead Key Fob Batteries Modern key fobs allow us to open trunks, doors and tailgates without having fumble around for a physical key. Certain key fobs come with an integrated key that can be utilized to start our vehicles. The fobs are powered by a small battery. If this battery dies, the key fob cannot emit a signal that could be used to start the vehicle. There are a variety of methods to fix a dead car key fob. First, determine the condition of the key fob to determine if it's actually dead. If it appears dead, you will require replacing the batteries. You can do this yourself by taking the key fob off its clip or using a small flat-head screwdriver to pry it apart. You should not use too much force or you may damage the fob. Also, make sure that you're using a correct kind of battery. Most key fobs are three-volt CR2032 batteries, however some models may require something different. If you aren't sure what kind of battery your vehicle requires, you can usually find the details in your owner's manual or visit an Interstate All Battery Center to have a battery expert help you. If the key fob actually isn't dead, you can sometimes revive it by moving it closer to your car. Since the majority of key fobs are RFID (radio-frequency identification) they only function at a limited distance and must be close enough for the ignition system to be able to recognize the signal. You can unlock your car or even start it by moving a couple of inches closer. Many car manufacturers have a backup system that can be activated when the battery on the key fob is low. Ford, for example, has a slot that is devoted to the key fob. When inserted correctly, the key fob will start the car's engine. Check your owner's manual for instructions on finding the slot and how to insert the key fob. If you are unable to start your car using this method, make sure to get assistance from roadside assistance. Broken Key Ring The internal chip of the key fob is what transmits to the immobilizer of your car to enable the motor. The chip could be damaged or there could be programming errors. If this happens the key fob won't be able to transmit the correct identification code and your car won't begin. A faulty transponder can be caused by physical damage to the key shell or wear and tear on the contact pads. There are a lot of warning indicators on your dashboard when a keyfob has trouble communicating with the immobilizer system of your vehicle. These include errors flashing lights, or the key is not locking the vehicle. If you observe any of these warnings, call your local locksmith immediately to repair your key fob or replacement. When you carry many keys, it is easy to break your key ring. This could cause the fob to crack in half. This is one of the main causes of broken car keys. If this happens, attempt to use super glue to fix it by applying a small amount of the glue to both sides of the crack and carefully pressing them together. Use a gel-type of glue that dries slowly in order to avoid drips or runniness. If this method does not work, it is important to call a professional locksmith as soon as possible to avoid any further damage to your vehicle. A qualified locksmith will be able to replace or repair your key fob in a short time and will also be able to ensure that the ignition lock and door lock are not affected in the process. If your key fob gets damaged, it can be frustrating and inconvenient. on front page is not a cause to be in a state of panic or anger. Instead you can take proactive steps to reduce the risk of your key fob rupturing again in the future, such as regular maintenance by using key protectors and keeping a spare key. Quicksmith's team is ready to help you if your key fob is damaged. Broken Key Loop One of my MK5 keysfobs broke off the small key ring at the top, which is where it joins the keyfob. It appears to be made of very soft metal or plastic. I've drilled a hole, and wet-sanded it to strengthen it however, I'm assuming the problem isn't resolved by this. I've also tried wrapping the broken part of the ring in clear tape, but it isn't doing any good. It's really a shame, since I use the little rings to hold my keys in place on the tiny mini-splitring which holds the larger split ring for the keyfobs that I have. If the key fob's 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 however they are only an interim solution. It is more efficient to get it fixed by a mechanic. Alternately, you may find a replacement case at a home improvement store or a locksmith. They are not likely to be as costly as a new key fob.