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Carry a Spare Key For Your Mazda It's risky to let children stay in cars. They could cause power windows or other controls to function and even cause the car to move. If you've lost your Mazda key, call a professional locksmith immediately. These locksmiths can create spare keys for any Mazda model. They can also cut and program a replacement key if your key is damaged or is not functioning correctly. Keyless Remote Key Fob A lot of newer cars come with key fobs that allow you to remotely open and close the car's doors and also start the engine. As with all technologies keys can fail occasionally. Fortunately that the majority of key fob problems aren't complicated or threatening and can be resolved easily. One of the best ways to keep problems from catching you off guard is to always have an extra key. Batteries are required for key fobs, and they need to be replaced on a regular basis. Some fobs have removable covers, which makes it easy to replace the battery. Others may require a specialized tool or assistance from a dealer. A new battery should last for about one year, irrespective of the kind of fob you have. A spare battery will also keep you from getting stuck when you get to work in Manhattan, White Plains or elsewhere. Fobs that feature “flip keys” have a key that flips out when the button is pressed and the fob itself has buttons to unlock the door or opening the trunk etc. When not in use the key can be turned into the remote. Flip keys and fobs could be vulnerable to damage due to many sources, such as water, blunt force and circuit board scratches and excessive heat. Transponder Chip Keys If you have a car from the past two decades or so, chances are it needs the use of a transponder chip to start. This technology is designed to prevent car theft through a signal that only the car's onboard computer recognize. The key has a small microchip in it which is similar to the chips used in military aircraft. The chip communicates with the vehicle's onboard system using an antenna that is ringed around the ignition cylinder. The key's copper wiring is connected to the microchip. The wire sends a message to the onboard computer in the car when you turn the key in the ignition. The computer onboard responds by allowing the driver to start the engine. If the code is valid, it will remain on and the vehicle will not shut off or lock. Certain Mazda keys need programming (transponder and remote/fob key). These keys can only be programmed by a vehicle dealer or automotive technician. Other keys do not require coding. Other keys don't require any kind of code. Keys for Keyless Entry Systems Mazda's Keyless Entry System allows you to unlock and start your vehicle using just one keyfob. The key fob has a security chip that sends a signal to car electronics that activate doors and ignition. Some models even have a push button with a key that allows you to start the engine. To keep the transmitter and receiver connected, a 40-bit number is generated every time the keyfob button is activated. The codes are generated by the transmitter and receiver using a pseudo-random generator so that they don't repeat. If you're experiencing issues with your Mazda Advanced Keyless Entry system it could be because the car's transmitter is not working properly or the battery inside the fob is not functioning properly. If the problem persists you should bring the fob to Holiday Mazda in Fond du Lac, WI, to have an expert look. If you have an extra electronic key, bring that with you to use it while you wait for your Mazda dealer to resolve the issue. Remove the plate from the key set and store it in a secure location (not in your car). This gives you the code required should you need to replace your keyfob. Keys with Remote Control This remote can be used with your Mazda model if it comes with the standard keyless entry system. It can unlock the doors and begin the engine. It also works with the factory KEY LOCK. The remote will need to be programmed professionally by an auto locksmith when it is received (click here for Locksmith Search). It's an aftermarket fob, therefore there's no Mazda logo on it. The key buttons operate the door locks, liftgate lock, and fuel-filler lid (if equipped) as well as the start of the engine of your vehicle and activate the theft-deterrent feature if your vehicle is so equipped. The hazard warning light and/or warning beeps will signal the presence of a problem. See your Authorized Mazda Dealer for further instructions. It is vital not to leave your children unsupervised when you use the key as they might be able to operate the controls or even make the vehicle move. The battery for the key should be replaced approximately once a year. mazda 2 key G28 Car Keys Solutions is indicated by the KEY warning indicator in the instrument cluster, or the KEY Battery Replace Warning beep.