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How to Replace a Jaguar XF Replacement Key Fob In contrast to the older metal keys that can be copied for less than $5 at any hardware store, today's high-tech key fobs can't be easily replaced. Drivers will recognize that it's time to replace the battery if they notice a reduction in the key fob's effectiveness range and 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 buyers due to their ease of use and security features. For example, some models automatically lock or unlock when you tap the door handle, which is much easier than fumbling with keys in your purse or pocket. These systems are also more secure than standard locks because they utilize rolling codes which change each time you use your key fob. This makes it harder for thieves to smuggle or spoof the signal. Key fobs emit a radio frequency, which has a unique digital identity number that only the vehicle can recognize. When you press the button on the Jaguar's key fob the computer inside the car detects the code and responds by unlocking doors and starting the motor. The key fob can also send a signal to the trunk receiver, which can be used to open the tailgate, without having to touch it. Unfortunately, thieves are finding ways around these systems. They've been able utilize software to decode the signals sent by key fobs or remotely reprogram a key using the transponder code for your car. Many experts recommend the use of a shielded case for your key fob. These cases limit the distance that frequencies generated by the fob could travel, and they are available at a majority of auto parts stores for under $10. Remote Start You can utilize your Jaguar XE key fob to lock, unlock, or start your car remotely. To activate the feature simply press and hold the lock button while holding your key fob within reach of your vehicle. When the door handles are locked, press the start button to begin your engine. If the fob for your key cannot be accessed, the car will display the message “SMART KEY Battery Low”. Most new Jaguar models offer remote-start capability. With this feature, you are able to start your vehicle's engine using the convenience of your phone. This is particularly helpful when you're returning to your home after a long drive or when it's cold outside to turn on the heating. You can save money on fuel while reducing pollution and protecting the environment while driving. As opposed to the old metal keys you can purchase at hardware stores The new smart keys come with an embedded security chip within. This security feature protects your vehicle from theft when someone discovers it and attempts to use. This technology makes it hard for car thieves and locksmiths to duplicate these keys. You'll need to go to your dealer to obtain a replacement Jaguar XF key. Modern automobile owners are embracing smarter keys that permit them to control their vehicle via an app. These new technologies make vehicles more secure, easy to use and more efficient than ever. This extra functionality comes at costs. The latest key fobs can only be purchased from dealerships and must be programmed to work inside your vehicle. Anti-Theft System The anti-theft system was created to deter criminals from absconding with Jaguars. It uses a unique technology called Ultra Wideband (UWB) to detect the key fob signal and verify that it's genuine. This stops relay attacks, which can take advantage of the signal to unlock or start the vehicle even when the key is not in the ignition. The system comes with a Guardian Mode that reports if a vehicle is unlocked unexpectedly or started. Jaguar suggests that you turn on this feature during the handover process. Additionally the Jaguar XF features an immobilizer which checks that the key fob is being used to start the engine. The immobilizer blocks the fuel pump, ignition coil, and injectors if the key isn't in use. This prevents the car from being able to start. Modern Jaguars, unlike older vehicles have advanced security systems that require specialized equipment and tools for servicing. Diagnostic tools such as scanners are used to identify the diagnostic trouble codes of anti-theft control modules and to check the real-time data as well as freeze frame. The technician will also need to physically test analog voltages throughout the system. This can be done by connecting a multimeter to the anti theft control module or using the factory software. This is usually the best method to identify the anti-theft system. If the technician detects an issue, they could need to replace the system. Bluetooth Bluetooth has been in use for over 20 years, and has revolutionized wireless communication. This technology is widely used, appearing in everything from light bulbs to smartphones and cars. Both devices must be turned on, and in close proximity to each other for communication to take place. You may have to go into the device's settings, depending on its type: an iOS or Android phone will include an Bluetooth menu while a desktop computer will typically have one in the Control Panel or the System Preferences. The first Bluetooth connection is required. Both devices exchange their unique addresses (which are displayed as Hexadecimal numbers). In contrast to other RF technologies, Bluetooth is secure, with encryption and authentication to safeguard data transmissions. Bluetooth operates in the unlicensed ISM frequency band, and a standard set of specifications and rules distinguishes Bluetooth from other protocols such as ZigBee and WiFi. jaguar spare key of Jaguar XF models offer Bluetooth connectivity by default and you can connect your compatible phone to the car via InControl. The steps for pairing your phone with the car vary depending on the manufacturer, so be sure to refer to the InControl manual for the precise steps. It is possible that you will need to enter a passkey which will be displayed on the touchscreen of your vehicle, in order to complete the connection.