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How to Fix Common Mazda 3 Key Problems The Mazda 3 is an elegant compact car that has a luxurious interior and a nimble handling. It is also a great bargain compared to other compacts on the market. Lost keys can be a huge issue. Not only do you have to pay the dealer to tow your vehicle and reprogramme your keys however, it can also cost money to replace the spare keys. The key is not able to lock or unlock the door It is dangerous leaving doors unlocked particularly when the vehicle is moving. If the door is opened while the vehicle is moving it could cause passengers to fall or even be injured. To avoid this problem ensure that you keep your keys away from children. Children may find them interesting and play around with them. This could cause the power window or other controls to work and even move the vehicle. If you notice that the key fob does not unlock or lock the doors, the battery may be dead. The button cell battery in the keyfob is limited in its life span, so it's important to replace it regularly. A good battery will last between two and three years. It is essential to replace the battery with a battery that is the same voltage and the same dimensions as the initial. A problem with key pairing could also be the reason behind your key fob not working. It could be that the key fob was not paired properly with the car when it was first purchased. In this case the dealer has to reprogram it. Fortunately it is possible to do this in under a minute. The dealership can also reset any residual electrical power in the on-board computer. This will not solve your key fob's inability to lock or unlock doors. Dead coin battery If your key fob isn't working or unlocking your car, it may be because the battery is dead. This is a typical issue however it can be easily solved. You can replace the battery on your own, saving having to visit a dealership. The process is easy and requires only a few simple tools. Press the auxiliary key button located on the back of the Mazda flip key. This will open the metal auxiliary key and let you take it off. After the auxiliary key made of metal is removed, you'll notice the slot on either side of the fob case. Start with one side of the case and move around with a tape-wrapped screwdriver. Gently tear apart the two halves before putting them aside. You can now replace the battery in the key fob. You don't want to damage the rubber ring that the battery is placed. After the battery is replaced, you can reassemble your case and use the new key fob. Most stores that sell batteries carry a replacement battery. Search for a CR2025 battery. These batteries are typically used in watches and calculators but can also be found in auto parts stores and on the internet. It's simple and fast to change the battery in your Mazda 3. This will save you money and avoid an appointment with a dealer. Key Pairing Problem If you've been driving your Mazda 3 for a long time and suddenly it stopped working, there might be a problem with the remote keyless system receiver module. This is particularly likely in the event that the key fob's chip is damaged. This may be due to several reasons, like a dropped key or exposure to water. The key fob's electronics are protected by rubber seals, therefore a raindrop should not damage them. However, submerging it into the pool or ocean water is an issue that is much more severe due to the highly electrically conductivity of salt could cause damage to the electronic components. If your key fob is not working, you're probably in need of a new battery. A quick search of the internet will reveal that there are many third-party replacement batteries. However, it's important to be aware that they may not be compatible with your Mazda 3. It's best to buy from a dealer in order to be sure that it is compatible with your Mazda 3. After you've replaced your battery, your key fob should function again. If the remote doesn't respond when you press on the lock button, it's likely that the key has been stuck in power saving mode. Press the lock button 5 times and hold it until the red light blinks. Reprogramming an encryption key Mazda's keyless entry system lets you to unlock the car and start it without the requirement for an ordinary key. This is a fantastic convenience however the process of reprogramming your key or remote may seem complicated for some people. It also requires a special machine that only the dealer or an automotive locksmith has access to. This machine is connected to the computer in the vehicle and it starts the programming process for the creation of a new key or remote. The first step is to ensure that you have at least two functioning keys for the Mazda. Then you can move on to the reprogramming of a spare key. g28carkeys.co.uk of the new FOB will be temporarily turned off to protect the vehicle from theft. Once you have reprogrammed your new key, these functions can be activated once more. After that, you are able to use the new key to open the doors and start the engine. Check it out first to make sure it works. If you're worried about losing the keys, it is an excellent idea to keep a spare key in the back of your hand. It's simple to add an extra Mazda key. Follow these steps and you'll be able to save money by not having to pay the dealership to do it for you. This can also save you from the cost of towing and save money on a spare key.