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Mazda 2 Key Replacement Mazda produces a wide range of cars. The Mazda key features a transponder embedded in the plastic head of the key, which is programmed into your vehicle. Dealers often give you a duplicate key, but you might need to program it. You can also have an expert locksmith do it for you. Keyless Entry System When you park your car, it's common to be a bit niggling, “have I locked the car?” With keyless entry, you don't have to worry about leaving it unlocked since once you've walked the set distance from the vehicle, it will automatically lock itself. You'll typically need to press the button on the remote key fob in order to activate this feature, however certain systems allow you to activate it by simply walking near the vehicle. The majority of systems emit radio signals that are detected by the key fob. The key fob then sends its own signal back to the car, signalling the vehicle's onboard computer know that the user is at an appropriate distance to the key to unlock the doors. Some systems are two-way, meaning they also relay status information to the driver via a tiny screens inside the car, such as levels of battery, window up/down status, and diagnostic data. It's important to read the system's instructions manual thoroughly, as each one is unique and may have specific wiring requirements. Be sure to disconnect the car's battery before making any changes to electrical connections. Make sure to use high-quality batteries that are rated according to the power requirements by the system. If you choose the wrong battery can damage your car's electronics. It's also important to store batteries in a place that is protected from heat and moisture. Transponder Chip A transponder chip, also referred as a “chip key,” is an anti-theft feature that is integrated into your car's ignition. This is a safer way to prevent car theft, since it guarantees only your key is able to start your vehicle. When you insert a lock with the transponder chip inside your ignition, it sends a signal to a small antenna ring that is placed on the engine of your car. The engine control unit (ECU), which controls the car will then confirm that the signal was sent from your original keys. If the ECU does not receive this message, it will remain immobilized and locked. This process is similar to the way military planes use coded messaging to identify themselves on radar. The transponder chip used in vehicles was designed this way and has helped in reducing car crime in the United States. A transponder chip is an incredibly small microchip that's built into the head of your car key. It is sometimes referred to as a chip-key, and is used by the majority of cars made in the last 15 years. The name comes from the microchip electronic that's integrated into the head of your key. Contrary to flat metal keys which don't have any technology in them A transponder key is more difficult to duplicate without the help of an automotive locksmith. A locksmith must use specialized equipment to clone an existing transponder key for your vehicle. Remote Key Fob A key fob, or remote, is a tiny device that opens the doors of your vehicle and in some cases even starts it remotely. It also has an embedded security chip or transponder. Most fobs come with multiple buttons which perform a variety of functions, from locking your doors and opening your trunk to starting your car. Fobs are typically attached to your keychain and come in a variety of sizes and shapes. Some older key fobs may be programmed by the user however most require locksmith or dealership programming using a special computer program. These programs differ among different makes, models and years of automobiles. The key fob transmits its unique digital identification code to the onboard computer of the car when it is programmed. The computer stores this code, making it impossible to open the car's doors with a different fob. Many newer key fobs can even open your car's windows. This is particularly helpful if you've parked your vehicle in a tight area. It also helps if you wish to cool your car on a hot day without having to leave it. You can also utilize a fob to trigger the panic button in some automobiles, which emits an attractive sound that deters break-ins. It's a good idea keep your key fob by your bedside to prevent home burglaries according to Consumer Reports. Door Locks Door locks must meet building and fire regulations, and also customer-specific or industry-specific security requirements. G28 could focus on accessibility for people with disabilities, safety in the event of an earthquake blast, blast strength, retract deadbolt torque as well as lock durability. A door lock cylinder consists of a tube made of metal that holds bolts. The bolt extends from the cylinder and locks the door. It also works with spring-loaded pins to prevent the cylinder from rotating. When the key is inserted into a lock, the notch in the key push the pins up to a height that matches their positions within the housing of the cylinder. When all the pins are in their proper positions, they form an uniform line, also known as shear lines, which prevents the cylinder from rotating and the bolt from shifting, locking the door. To reset the autolock, press the lock and unlock button on the key fob simultaneously for approximately 60 seconds. This resets the sensor, allowing the doors, the fuel-fill lid and liftgate to lock automatically when the ignition switch is turned off. Check out the Settings section of the Mazda Connect Owner's Manual to alter the automatic lock/unlock setting. The hazard warning lights as well as the horn will flash to indicate that the auto locking function is activated.