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Different Types of Mazda Replacement Keys There are many ways to replace your Mazda key when it ceases to function or if it is lost. Some are more affordable and easy than others. A locksmith can duplicate a chipped key and reprogram it for your vehicle. A dealership may be able also do this. Transponder Keys If you own a vehicle manufactured in the last 20 years It is likely that your key is equipped with an embedded transponder chip. These chips are used as an additional security feature for your vehicle to protect theft. The engine control unit transmits it a coded message when you insert the transponder key in the ignition. If the code is correct, your car will begin to move. A transponder key has the advantage that it cannot be duplicated. However it doesn't mean it is completely safe from thieves. There are plenty of ways for skilled thieves to wire a vehicle that has an embedded transponder chip. Transponder keys are somewhat more expensive however they offer more security and features. It's worth it to protect your car from being taken. You can obtain an extra transponder key for your car by contacting an auto locksmith or local store that provides a key cloning service. You can also program the chip with a detailed owner's manual. If you choose to do this yourself, use a key copy of high quality. A cheap key could damage the transponder chip inside and cause your car to not start. Mechanical Keys You might think of the classic IBM Model M keyboard when you hear the term mechanical key. They have stems that hold keys in place and a spring. This is the reason why the switches feel nice when you press the keycap. The keys themselves have a flat top and are either rounded or have ridges. When people talk about the “feel” of their keyboards, it is referring to the keys. Mazda's key system is equipped with a range of security features that can deter theft. G28 of them is a security chip that is built in the key, which transmits signals to the ignition. This is designed to prevent the car from starting when the wrong code is entered into the key's transponder. However they can malfunction at times. It's important to always have a mechanical backup key to get back on the road. The most effective way to have a backup is to have your dealer cut and program it to your car. It's not as expensive as a new key fob and might be faster. You will also have peace of mind that your car will be secure even if your electronic system fails. If you need to have your mechanical key programmed, the procedure will differ based on the manufacturer of your vehicle and model. Fob Keys Fob keys emit a code that is matched to a computer in the car to unlock doors and also start the engine. Although they are useful and safe however, replacing them could be expensive, especially if your only one is lost. The procedure for replacing a key fob varies from automaker to manufacturer, but a majority of them provide instructions in their user's manuals or on their websites. The cost of a key fob might be anywhere between $50-$300 and includes mechanical backup keys. It's a good idea have a spare remote. If you're in market for an automobile many used car dealers will pay more in case the vehicle has two functioning remotes. Key fob batteries only last about a year, which is why it is crucial to replace them before they die. A dead battery could prevent your key fob to unlock or even start the vehicle. A drained cell can also cause buttons on your key fob to stop working making it difficult to get into or out of your vehicle. To replace the battery inside a key fob, you need to remove the plastic case of the key fob. Place the battery that was used on the ring of small rubber. Pick up your new battery, and place it inside the case, with the positive (+) facing upwards. Reattach the case to the key fob by putting the ring in the case and pressing both sides until they click. Remote Control Keys Certain models of mazda keys come with a remote integrated into the head of the key which makes it a dual-purpose device. This kind of key offers an additional layer of protection for the vehicle, as it stops thieves from using the key made of flat metal. This kind of Mazda key also controls the power window on your car as well as the panoramic roof* depending on the model. The Red Key allows car owners to restrict certain features like the maximum speed and volume of the loudspeaker. If you leave the Mazda key inside your car it will stop the engine and set off the alarm. The transponder chip within the key disables the normal immobiliser feature in the ECU. To avoid this to avoid this, you must always carry the Mazda key with you every time you leave the vehicle. Also, don't place the Mazda key close to any metallic object or electronic equipment, e.g. Mobile phones, tablets and laptops should be kept at a minimum of 10 cm away from the charger. If this isn't possible, place the key as far as possible.