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Carry a Spare Key For Your Mazda It's risky leaving children in a car. They could cause power windows to be opened or other controls to operate or even move the car. If you've lost your Mazda key, you should call a professional locksmith immediately. These experts can create spare keys for virtually any model of Mazda. If your key is damaged, or not functioning correctly, they may cut and program an entirely new one. Keyless Remote Control Fob Some cars are equipped with key fobs that allow you to open and lock the doors of your car remotely, and even start your engine. Like all other technologies it is possible for them to malfunction occasionally. Fortunately, the majority of key fob problems aren't difficult or serious and can be fixed easily. Always have a spare car key to avoid problems. Batteries are essential for key fobs, and need to be replaced regularly. Some fobs come with removable covers, which makes it easy to replace the battery. Others may require a special tool or assistance from a dealer. Regardless of the type of key fob you own and the type of battery you have, a new one should last for about a year. A spare battery can ensure that you are not stranded on your way to work in Manhattan, White Plains or anywhere else. Fobs with “flip keys” have a key that flips out when a button is pressed, and the fob itself contains buttons for unlocking the door or opening the trunk etc. The key portion can be reversed back to the remote when it is not in use. Flip-keys and fobs can be damaged by a number of things, including water and force blunt. Circuit board scratches and excessive heat can also cause damage. Transponder Chip Keys If you have a car from the last two decades or so, chances are that it requires a transponder chip key to start. This technology prevents car theft by using an encryption code that must be deciphered by the computer in the car. The key is fitted with a tiny microchip in it that's similar to the chips used in military aircraft. The chip communicates with the vehicle's onboard system through an antenna that is ringed around the ignition cylinder. The key also has copper wire that's attached to the microchip. This wire transmits a signal to the onboard computer of the car when you turn the key into the ignition. The computer onboard responds by allowing the driver to start the engine. If the code is valid, the engine will stay on and the car won't shut off or lock itself. Certain Mazda keys require programming (transponder keys and remote/fob keys). They are only programmed by an automotive or car dealer locksmith. Certain keys do not require programming. For instance, regular metal keys without a chip aren't required to be programmed. Keys with Keyless Entry System Mazda's Keyless Entry System allows you to open and start your vehicle with just one keyfob. The key fob comes with an inbuilt security chip that sends a signal to the car's electronics to activate the doors and ignition. Some models even come with a keyless push button to start the engine. Every time the keyfob gets pressed, a 40 bit code is generated to keep the transmitter and receiver in sync. The codes are generated by the transmitter and receiver by a pseudo-random generator to ensure that they do not repeat. If you are having problems with your Mazda Advanced Keyless Entry system it could be because the car's transmitter isn't working properly or that the battery in the fob isn't fully charged. If the issue isn't resolved it is best to bring the key fob to Holiday Mazda in Fond du Lac, WI, to have an expert look. Bring a spare electronic remote to use while waiting for your Mazda dealer. Also, detach the plate from the key set, and store it in a safe location (not in your vehicle). mazda 2 key replacement gives you the code needed should you need to purchase a replacement keyfob. Keys with Remote Control The keyless remote control works with your Mazda in the event that you have the standard keyless entry. It can unlock doors as well as start the car. It also works with the factory KEY LOCK. The remote will need to be professionally programmed by an auto locksmith when it is received (click here for Locksmith Search). This is an aftermarket model therefore it is not equipped with an Mazda logo on the back of it. The key buttons control the door locks, the liftgate locks, lids for fuel-fillers (if equipped) as well as activating the engine of your car and activating the theft-deterrent systems when your car is equipped. If the system fails it will display hazard warning light or a warning sound will signal the issue. For more information, please contact your Mazda Authorized Dealer. It is crucial not to leave children alone with the key, as they might be able to operate controls or make the vehicle move. The battery in the key is recommended to be replaced at least once a year. The KEY warning indicator will be displayed in the instrument cluster, or the KEY Battery Replace Warning Beep.