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Mazda 2 Key Replacement Mazda manufactures a variety of cars. The Mazda key is equipped with a transponder chip inside the head of the key which is programmed into your vehicle. The dealer will usually give another key for you without the original one, but they might have to program it for you. You can also have an expert locksmith do it for you. Keyless Entry System When you park your car, it's common to be faced with the thought, “have I locked the car?” With keyless entry, you don't have to worry about leaving the car locked, as once you've walked the set distance away from the vehicle, it will automatically lock itself. Typically, you'll have press the button on the remote key fob to activate this function, but some systems let you activate it by walking close to the car. The majority of systems work by emitting radio signals that the key fob can recognize. The key fob transmits its own signal back to the car, letting the car's onboard computer know that the user has reached the right proximity for the key to open the doors. Certain systems are bi-directional, which means that they also send status information to the driver via a small display in the car. This includes windows' status, battery levels diagnostic data, and more. It is essential to go the manuals for each system as they're all unique and have their own wiring specifications. Before you make any electrical connections, disconnect the battery from the vehicle. Use high-quality batteries that are rated according to the amount of power required by the system. The wrong car battery can damage the electronics. In addition, it's essential to keep the batteries in an area that is shielded from heat and moisture. Transponder Chip A transponder, also known as”chip-key,” or “chip-key,” is a feature that stops theft from the ignition of your car. It is a safer way to avoid car theft since it makes sure that only your key can be used to start your car. When you insert a lock with the transponder chip into your ignition, it sends the signal to an antenna ring in your car's engine. The engine control unit (ECU) that is the vehicle's control unit will then confirm that the coded signal originated from the original keys. If the ECU is not able to receive this message, it will remain locked and immobilized. This is similar to the way military planes utilize codes to identify themselves on radar. This is how the transponder chip was developed for cars and has helped to reduce theft of automobiles in the United States. A transponder chip is a tiny microchip that's embedded into the head of your car key. It's also known as a chip-key, and is found in the majority of cars built in the last 15 years. The name derives from the microchip electronic that's built into the plastic head of your key. Transponder keys are more difficult to duplicate than flat metal keys that don't have any technology. A locksmith will use specialized equipment to copy an existing transponder for your vehicle. Remote Key Fob A key fob is the small remote that unlocks your car or truck doors and, in some instances it starts from an extended distance. It also comes with a built-in security chip, or transponder. Most fobs have multiple buttons that perform a range of functions from locking your doors, opening your trunk or starting your vehicle. Fobs are typically attached to your keychain. They are available in a variety of shapes and sizes. Some older key fobs are able to be programmed by the user, however the majority require locksmith or dealer programming with a special computer program. The programs are different for car models, makes and years. The key fob transmits its unique digital identification code to the computer onboard of the car once it is programmed. The computer stores this code, making it impossible to open the car's doors with another fob. Some of the newer key fobs have the ability to lower your car's windows. This is particularly useful when you've got your car in a tight space. It's also useful if are looking to cool down your car on a hot day without having to get out of it. You can use a key fob to activate a panic button on some automobiles. The button will make blaring noises that scare away burglars. Consumer Reports recommends keeping your fob in your bedroom to prevent home burglaries. Door Locks Door locks should meet fire and building regulations along with customer-specific or industry-specific security requirements. These regulations could be focused on accessibility for disabled people and safety in the event of an earthquake blast, blast strength, retract deadbolt torque and lock durability. A door lock cylinder is a steel tube that houses a bolt, which extends from the cylinder and locks the door. It also engages spring-loaded pins that prevent the cylinder from rotating. When a key is inserted into a lock, the notch in the key force each of the pins up to a height that fits their locations within the cylinder's housing. When all pins are placed in the correct positions they create what's called a shearline, which prevents the cylinder and bolt from rotating and locking the door. To reset the autolock, press the lock and unlock button on the key fob for about 60 minutes. This resets the sensor and allows the doors, the fuel-fill lid and liftgate to lock themselves automatically when the ignition switch has been shut off. Go to the Settings section of the Mazda Connect Owner's Manual to change the automatic lock/unlock setting. lost mazda 3 key fob warning lights as well as the horn will flash to indicate that the auto locking function has been activated.