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Mazda 2 Key Replacement Mazda produces a broad range of cars. mazda 3 key fob programming features an embedded transponder chip within the head of the key which is programmed into your vehicle. Dealers are often able to make you a duplicate key, but you might need to program it. You could also have a locksmith program it for you. Keyless Entry System You might be wondering if you have locked your car as you park it. With keyless entry you do not have to worry as the car will automatically lock after you walk within a certain distance. Typically, you'll have to push the button on the remote key fob in order to activate this feature, however some systems allow you to activate it simply by walking around the car. The majority of systems emit radio signals that can be detected by the key fob. The key fob sends its own signal back to the car, signalling the vehicle's onboard computer know that the user is at the appropriate distance for the key to unlock the doors. Certain systems are two-way, that is, they also send status information to the driver through a a small screen inside the car, like levels of battery, window up/down status, and diagnostic information. It is important to read through the instruction manual for each system, since they are all different and have different wiring specifications. Before making any electrical connections, you must disconnect the battery from the car. Finally, be sure to use high-quality batteries that have been rated for the amount of power needed by the system. Using the wrong battery could harm the car's electronic systems. It's also important to store batteries in a location that is safe from moisture and heat. Transponder Chip A transponder, also called a “chip-key,” is a feature that prevents theft in the ignition of your car. This is a more secure way to prevent car theft since it makes sure that only your key can start your vehicle. When you insert your key with a transponder chip in your ignition, it transmits a signal through the small antenna ring of the motor in your car. The car's engine control unit (ECU) will verify that this coded message came from your original key. If the ECU does not receive this message it will remain unlocked and locked. This process is similar to the way military planes use coded messaging to identify themselves on radar. This is how the transponder chip was developed for vehicles and has helped reduce auto theft in the United States. A transponder chip is an incredibly small microchip that's embedded into the head of your car key. It's often referred to as a chip key and is utilized by the majority of cars manufactured in the past 15 years. The name is derived from the microchip electronic that's integrated into the head of your key. As opposed to flat metal keys which do not have any technology the transponder key is more difficult to duplicate without the help of a locksmith for cars. A locksmith must use specialized equipment to clone an existing transponder for your vehicle. Remote Key Fob Key fobs are the small remote that unlocks the doors to your vehicle or truck and, in some cases, starts it from a distance. It also has a transponder, which acts as a security chip. Most fobs come with several buttons that can perform various functions, ranging from locking your doors, opening your trunk, and even remote to start your car. Fobs typically attach to your keychain and come in several shapes and sizes. Some older key fobs may be programmed by the user, however the majority require locksmith or dealer programming using a computer program. These programs differ between car models, makes and years. Once a key is programmed fob transmits its unique digital identification code to the car's onboard computer. The computer stores the code in memory, making it impossible for other fobs to unlock your car's doors. Many newer key fobs can even open the windows. This is especially useful if you have parked your car in a tight area. It is also helpful if wish to cool your vehicle during a hot day without getting out of it. You can use a key fob to activate the panic button on certain automobiles. The button will make blaring sounds that frighten burglars away. Consumer Reports recommends keeping your fob in your bedroom to avoid home burglaries. Door Locks Door locks must meet the fire and building codes, and also industry-specific or customer-specific security requirements. These requirements could focus on accessibility for disabled people and safety in the event of an earthquake blast, blast strength, retraction deadbolt torque and lock durability. A door lock cylinder consists of a tube of steel that holds an anchor bolt. The bolt extends through the cylinder until it locks the door. It also engages spring-loaded pins in order to prevent the cylinder from rotating. When the key is put into a lock, the notches in the key push the pins to a size that matches their location within the housing of the cylinder. If all pins are in the correct locations they form what's called a shearline, which prevents the bolt and cylinder from rotating, locking the door. To reset the autolock, hold the lock button and unlock button on the key fob for about 60 minutes. This resets the sensor, and allows the doors, lids for fuel-filler and the liftgate to lock automatically when the ignition switch is turned to the off position. The settings for automatic lock/unlock can be changed by referring to the Settings section of the Mazda Connect Owner's Manual. The hazard warning light and horn will blink to confirm that the automatic locking function has been turned on.