Carry a Spare Key For Your Mazda
In the car with children could be risky. They could cause the power windows to pop open or other controls to work or even move the car.
Contact a professional locksmith if you lose your Mazda key. They can design spare keys for nearly any model of Mazda.
If your key is damaged, or does not work correctly, they may cut and program a new one.
Keyless Remote Control Fob
A lot of newer cars come with key fobs that allow users to remotely open and lock the car's doors as well as start the engine. Like all other technologies keys can fail occasionally. Fortunately the majority of key fob issues are not complicated or serious and are easily fixed. One of the best ways to prevent problems from catching you by surprise is to always carry a spare key.
Batteries are needed for key fobs, and need to be replaced frequently. Some fobs are equipped with removable covers, making it easy to replace the battery. Others might require a specific tool or assistance from the dealer. No matter what kind of key fob you own, a new battery should last for about a year. Having a spare battery can also help you avoid the anxiety of being stranded somewhere in the journey to work in Manhattan or White Plains.
Fobs with "flip keys" have a key that flips out when the button is pressed and the fob's interior contains buttons for unlocking the door, opening the trunk, etc. The key portion can be reversed back into the remote when not in use. Flip keys and fobs could be susceptible to damage from various sources, such as blunt force, water and scratches on the circuit board and excessive heat.
Transponder Chip Keys
If you have a car from the past two decades or so, the chances are that it will require an transponder chip key to start. This technology is designed to prevent car theft through an electronic signal that only the car's computer onboard can detect. The key is equipped with the same microchip used in military aircraft. The chip communicates with the vehicle's onboard system using an antenna ringed around the ignition cylinder.
The key also has copper wiring attached to the microchip. The wire sends a message to the onboard computer of the car when you turn the key in the ignition. The computer responds by allowing the engine to start. If the code is valid, it stays on and the car will not shut off or lock itself.
Some Mazda keys require programming (transponder keys and remote/fob keys). These keys can only be programmed by an auto dealer or automotive technician. Certain keys do not require coding. For instance, regular keys made of steel without a chip do not require being programmed.

Keys with Keyless Entry System
Mazda's Keyless Entry system allows you to unlock your door and start your car using only a single keyfob. The key fob is equipped with a security chip that sends a signal to car electronics that activate doors and ignition. Some models also have an unlocked key to start the engine.
To keep the transmitter and receiver fully synchronized, a code of 40 bits is generated each time the keyfob button is press. The codes are generated by the receiver and transmitter using a pseudo-random generator, so that they don't repeat.
If you're having trouble with your Mazda Advanced Keyless Entry, it could be because the fob battery is low or the transmitter inside the car isn't working properly. If the issue persists then bring the key fob to Holiday Mazda in Fond du Lac, WI, to have the technician look. If you have a spare electronic key, bring that along too to use while you wait for your Mazda dealer to address the issue. Detach the plate from the key set and store it in a safe location (not in your vehicle). This will provide you with the key code you require 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 will unlock the doors as well as start the engine. It will also work with the factory KEY LOCK. The remote will need to be programmed professionally by an auto locksmith after it is received (click here for Locksmith Search). It is an aftermarket key fob, and there isn't a Mazda logo on it.
The key buttons control the doors locks, liftgate locks, fuel-filler lids (if equipped) and also starting your vehicle's motor and triggering the theft-deterrent systems if your car is so equipped. If the system malfunctions and the hazard warning lights and/or a warning beep will signal the issue. Contact your authorized Mazda dealer for more details.
It is essential not to leave children in the car with the key, since they could be able operate the controls or even make the vehicle move. The battery for the key should be replaced about every year.
mazda 2 key fob is indicated by the KEY warning indicator in the instrument cluster, or the KEY Battery Replace Warning beep.