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How to Replace a Jaguar XF Replacement Key Fob The high-tech keyfobs of today can't be easily replaced. In contrast to older keys made of metal that can be duplicated at any hardware store for less than $5, the modern keys cannot be easily replaced. Drivers will know it's time to replace the battery when they observe a decrease in the key fob's effective range and a “SMART Key Battery Low” message in their Jaguar vehicle's message center. Keyless Entry The convenience and security of keyless entry systems are growing in popularity with car owners. For instance, certain models automatically lock or unlock after you touch the door handle, which is simpler than having to search for keys in your purse or pocket. Additionally, these systems tend to be more secure than standard car locks since they employ rolling codes that are changed each time you use the key fob. This makes it harder for thieves to hijack the signal or alter it. The Key Lab emit radio frequency with a unique, digital identification code that can only be recognized by the vehicle. When you press the button on the Jaguar's key fob, the computer in the car is notified of the code and responds by unlocking doors and triggering the motor. The key fob also transmits an alert to a receiver located in the trunk, which can be used to open the tailgate hands-free. However, criminals have discovered ways to circumvent these systems. They've been able to employ software that decodes the signals sent by key fobs, and even remotely reprogram a new key with the transponder codes of the car. Many experts suggest adding a shielded case to your key fob. These cases limit the distance the frequencies that are emitted by the fob can travel. They are sold in many auto parts stores and cost less than $10. Remote Start Your Jaguar XE keyfob can be used to remotely lock, unlock and start your vehicle. To activate the feature, press and hold the lock button while holding the key fob in the range of your vehicle. Push the start button once the door handles are locked. If the key fob can't be found, the car will display the message “SMART Key Battery Low”. The majority of the latest Jaguar models offer remote-start capability. With this feature, you are able to start the engine of your vehicle from the comfort of your smartphone. This is especially helpful if you're returning home after a long drive or when it's too cold to turn on the heating. You can save fuel while reducing pollution and protecting the environment while driving. The new smart keys come with built-in security chips in contrast to the traditional keys made of steel that you buy at hardware stores. This security feature will protect your vehicle from theft should someone find it and tries to use. This technology makes it difficult for locksmiths and car thieves to duplicate keys. You'll have to visit your dealer to get the replacement Jaguar XF key. Modern automobile owners are embracing smarter keys that permit the vehicle to be controlled via an app. The latest technologies make vehicles more secure, easy to use and efficient than ever. However, that extra function comes with a price that is why the most recent key fobs need to be purchased from a dealer and programmed with your vehicle. Anti-Theft System The anti-theft system is designed to stop criminals from taking your Jaguar. It utilizes a new technology called Ultra Wideband (UWB) to detect the key fob signal and verify it's genuine. This prevents so-called relay attacks that can interfere with the signal to unlock or start the car even when the key isn't in the ignition. The system has a Guardian Mode that reports if the vehicle is suddenly unlocked or started. Jaguar suggests activating this feature as part of the handover process. In addition, the Jaguar XF features an immobilizer that verifies that the key fob is used to start the engine. If the key is not being used the immobilizer will shut down the ignition coil and injectors, stopping your car from getting started. Unlike older vehicles and vehicles, modern Jaguars are equipped with sophisticated security features that require special tools and equipment to service. This includes diagnostic tools such as a scanner that can read the anti theft control module's diagnostic trouble codes and also check the freeze and real-time data. The technician should test analog voltages in the entire system. This can be accomplished by connecting a multimeter to the anti theft control module, or using factory software. This is usually the best method to determine the condition of the anti-theft system. If the technician finds an issue, they might need to replace the module. Bluetooth Bluetooth has been around for over twenty years and has revolutionized wireless communication. It is a common technology, appearing everywhere from light bulbs to smartphones, and cars. Both devices must be powered on, and in close proximity to each other to allow communication to take place. You may need to access the settings of your device based on the type. An iOS or Android phone comes with an Bluetooth menu, while desktop computers typically have one located in the Control Panel. The initial Bluetooth connection must be paired, with the two devices exchanging their unique addresses which are represented as numbers in hexadecimal format. In contrast to other RF technologies, Bluetooth is secure, with encryption and authentication to protect data transmissions. Bluetooth operates in the unlicensed ISM frequency band, and a standardized set of rules and specifications distinguishes it from other protocols like ZigBee and WiFi. Most Jaguar XF models offer Bluetooth connectivity by default and it is possible to pair any compatible phone to the car via InControl. This is done via the smartphone's Bluetooth menu. The steps vary from manufacturer to manufacturer and therefore, you should consult the InControl manual to know exactly the procedure to follow. You may also have enter a passcode to complete the connection which will be shown on the touchscreen of your vehicle.