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How to Fix Common Mazda 3 Key Problems The Mazda 3 is a stylish compact car with agile handling and luxurious interiors. It's also a huge bargain compared to other compacts available. Lost keys can cause a lot of hassle. It is costly to replace keys that are lost, and also transporting your vehicle to the dealer to reprogram your key. Key not locking or unlocking doors The doors left unlocked can be very dangerous, particularly if the vehicle is moving. If the door is opened while the vehicle is moving it could cause passengers to fall out or suffer injuries. Keep keys out of the reach of children to avoid this. Children might find them interesting and play with them, which can cause the power windows or other controls to function and even make the vehicle move. If you notice the key fob doesn't unlock or lock the doors, the battery could be dead. The button-cell battery inside the key fob has a finite life span, so it's important to replace it regularly. A good battery can last between two and four years. When replacing the battery, it is crucial to use a battery with the same voltage and size as the original. Another reason that the key fob might not be working is a key pairing issue. It could be that the key fob was not paired properly with the car when it was first purchased. In this scenario, it will need to be reprogrammed by the dealership. This can be done in under one minute. The dealer can also reset any remaining electricity in the on-board computer. However, this will not change the ability of the key fob to lock or unlock the doors. Dead coin battery If your key fob has stopped turning on or unlocking your car, it could be due to the battery being dead. This is a common issue however, it is easily solved. You can change your battery yourself and avoid the hassle of going to a dealer. The procedure is simple and requires only some basic tools. Press the auxiliary key button located on the back of the Mazda flip key. This will allow you to take off the auxiliary keys made of metal. There's an opening on each side of the case after the auxiliary metal is removed. Begin with mazda 3 replacement key fob G28CarKeys of the case and work your way around using a tape-wrapped screwdriver. Gently break the two halves, then set them aside. Now you'll be able see clearly of the key fob battery and you can replace it. Be careful not to scratch the ring of rubber that the battery sits on. After the battery has been replaced, you can reassemble your case and take pleasure in the new key fob. You can buy a replacement battery at most stores that sell batteries. Look for a CR2025 coin cell battery. These batteries are typically used in calculators and watches but they can also be purchased at auto parts stores, or online. Making the change to the battery in your Mazda 3 is easy and quick, and can save you money on a trip to the dealership. Key Pairing Problem If your Mazda 3 has been working for a while but suddenly stops, it could be the remote keyless receiver module. It is more likely to happen if the internal chip of the key fob is damaged. This could be due to various factors such as dropping or wetting the key. The key fob's electronics are protected by rubber seals therefore a raindrop will not cause damage to them. Submerging the key fob in ocean water or pool water can cause a significant issue due to the fact that salty water is extremely conductive and may cause damage to the electronic components. If your key fob does not work, you may require new batteries. There's a range of third-party batteries on internet. But, it's important to note that they might not be compatible with your Mazda 3. It's a good idea to buy one from the dealership and ensure that it's certain to work with your vehicle. After replacing the battery, you'll be able to use the key fob once more. However, if your remote isn't responding when you press the lock button, the key is probably stuck in power-saving mode. To remove it from this mode you'll have to press the button five times and then hold it down until the red light blinks. Reprogramming the key The keyless entry system on the Mazda allows you to unlock and start the car without using the traditional key. This is a fantastic convenience however, the process of reprogramming the remote or key may be complicated for some people. It also requires a device that is available only to the auto locksmith or dealer. The machine is connected to the computer in the vehicle, and it begins the process of programming for the new key or remote. The first step is having at least two keys that function for the Mazda. You can then proceed to changing the programming of a spare key. Initially, the functions of the new FOB are turned off to safeguard the car from theft. After you've reprogrammed the new key, these functions will be activated once more. After that, you will be able to use the new key to unlock the doors and start the engine. Test it first to make sure it is working. Keep a spare set keys around if you are worried about losing your keys. The process of adding a spare key to your Mazda is a simple process. You can save money by following these simple steps. This can also save you from an expensive towing bill, as well as saving money on a new spare key.