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How to Replace a Jaguar XF Replacement Key Fob Unlike older metal keys that can be copied for less than $5 at any hardware store, today's high-tech key fobs are not easily replaced. Drivers will know it's time to replace the battery if they notice a reduction in the effectiveness of the key fob's range, and also a “SMART KEY BATTERY LOW” message in their Jaguar vehicle's message center. Keyless Entry Keyless entry systems are becoming more and more popular with car owners due to their ease of use and security features. For example, some models automatically lock or unlock when you press the door handle, which is more convenient than fumbling for keys in your purse or pocket. These systems are more secure than standard locks, because they use rolling codes that change each time you use your key fob. This makes it much more difficult for thieves to smuggle or spoof the signal. Key fobs emit radio frequencies that carry a unique digital identification code that can only be recognized by the vehicle. When you hit one of the buttons on the Jaguar key fob, it transmits the code to the car's computer, which responds by unlocking the doors and then starting the engine. The key fob also sends signals to a receiver located in the trunk, which can be used to open the tailgate without hands. Unfortunately, thieves are able to bypass these systems. They have been able use software that decodes signals sent by the key fobs or even remotely reprograms a new key to the car's security code. Many experts suggest the use of a shielded case for your keyfob. These cases limit the distance that the frequencies generated by the fob can be transmitted. They can be found in most auto parts stores and are priced less than $10. Remote Start You can utilize your Jaguar XE key fob to lock, unlock and start your car remotely. Press and hold the lock button, while holding the key fob inside the range of your vehicle. After the door handles have been unlocked, push the start button to start the engine. If the fob for your key cannot be accessed, the car will display the message “SMART KEY Battery Low”. All new Jaguar models are equipped with remote-starting capabilities. This feature allows you to start your car from your smartphone. This is particularly helpful when you're returning to your home after a long trip or when it's too cold to crank up the heater. TheKeyLab 'll be able to conserve fuel, prevent pollution and safeguard the environment while you're driving. Contrary to the traditional metal keys that you can purchase from hardware stores, these new smart keys have an integrated security chip inside. This feature safeguards your vehicle from theft should someone find it and attempts to use. This also makes it difficult for locksmiths to duplicate the keys, meaning you'll have to visit your dealer to purchase replacement Jaguar XF keys. Modern car owners are choosing more sophisticated key fobs, which enable them to control their car via an app. These new technologies make vehicles safer, more convenient and reliable than ever. However, that extra function comes at a cost that is why the most recent key fobs should be purchased from the dealership and then programmed to work with your vehicle. Anti-Theft System The anti-theft system is created to deter criminals from absconding with Jaguars. It employs a special technology known as Ultra Wideband (UWB) to detect the key fob signal and confirm it's authentic. This prevents so-called relay attacks, which can block the signal that is used to unlock or start the car when the key is not in the ignition. The system has a Guardian Mode that reports if the vehicle is suddenly unlocked or started. Jaguar recommends activating this feature during the handover process. Additionally to that, the Jaguar XF features an immobilizer that ensures that the key fob is used to start the engine. The immobilizer disables the fuel pump, ignition coil, and injectors if the key fob isn't being used. This stops the vehicle from getting started. Modern Jaguars unlike older vehicles are equipped with advanced security features which require special equipment and tools to service. Diagnostic tools like scanners are used to analyze the diagnostic trouble codes of the anti-theft control systems and check real-time data and freeze frame. The technician will also need to physically test analog voltages throughout the system. This can be accomplished by connecting a multimeter to the anti theft control module, or using the factory software. This is the most common way to diagnose an anti-theft system. If the technician discovers an issue, they could need to replace the system. Bluetooth Bluetooth has been in use since the past twenty years and has revolutionized wireless communications. It is used everywhere from automobiles to light bulbs and smartphones. To establish a Bluetooth connection between two devices, both have to have it turned on and be within a reasonable distance for the connection to occur. You may need to go into your device's settings depending on the type of device. An iOS or Android phone comes with a Bluetooth menu, whereas a desktop computer usually has one in the Control Panel. The first Bluetooth connection is required. Both devices exchange their unique addresses (which are displayed as hexadecimal numbers). As opposed to other RF technologies, Bluetooth is secure, with encryption and authentication that protect data transmissions. Bluetooth operates in the unlicensed ISM frequency band, and a standardized set of specifications and rules distinguishes it from other protocols, such as ZigBee and WiFi. InControl allows you to connect your compatible smartphone to the majority of Jaguar XF models. The steps for pairing your phone with the car differ based on the manufacturer, so be sure to refer to the InControl manual for the precise instructions. You may also have enter a passcode in order to complete the connection, which will be displayed on the vehicle's touchscreen.