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How to Replace a Jaguar XF Replacement Key Fob As opposed to older metal keys which can be copied for less than $5 at any hardware store keys of today can't be easily replaced. The battery will have to be replaced when the range of the key fob decreases and the Jaguar vehicle's message center displays the message “SMART KEY” BATTERY LOW. Keyless Entry The convenience and security of keyless entry systems are becoming popular among car owners. Some models lock or unlock the door when you make contact with it, which is much easier than trying to find keys in your pockets. In addition, these systems tend to be more secure than standard car locks as they utilize rolling codes that change each time you use the key fob. This makes it difficult for thieves to sabotage the signal or to spoof it. Key fobs emit radio frequencies with a unique identification code that is only recognized by the vehicle. When you press the button on the Jaguar's key fob and the computer in the car receives the number and responds by unlocking doors and starting the motor. The key fob also transmits signals to a device in the trunk that can be used to open the tailgate without hands. Unfortunately, thieves have found ways to evade these systems. They have been able use software that decodes signals sent by key fobs and even remotely reprograms keys to the car's number. To prevent this, many experts suggest adding an enclosure that is shielded to protect your key fob. These cases limit the distance that frequencies generated by the fob travel, and they can be found at most auto parts stores for under $10. Remote Start Your Jaguar XE keyfob can be used to remotely lock, unlock and start your vehicle. To activate the feature simply press and hold the lock button while keeping the key fob in the range of your vehicle. Once the door handles are unlocked, push the start button to start the engine. If the key fob is not able to be found, the vehicle will display the message “SMART Key Battery Low”. All new Jaguar models are equipped with remote-starting capability. With this feature, you can activate the engine of your vehicle from the comfort of your phone. This is especially helpful if you're returning to your home after a long journey or when it's too cold to turn on the heating. You'll save fuel, reduce pollution, and protect the environment while driving. Contrary to the traditional metal keys that you can purchase from a hardware store The new smart keys come with an integrated security chip inside. This security feature helps protect your vehicle from theft if someone finds it and attempts to use. This also makes it difficult for locksmiths to duplicate keys, so you'll have to go to your dealer to purchase replacement Jaguar XF keys. Modern car owners are opting for more sophisticated key fobs, which allow the control of their vehicle through an app. These advanced technologies make cars safer, more convenient and reliable than ever. However, that added functionality comes at a cost that is why the most recent key fobs need to be purchased from a dealership and then programmed with your vehicle. Anti-Theft System The anti-theft device is designed to stop criminals from stealing Jaguars. It employs a technique called Ultra Wideband to detect and confirm the signal of the key fob. This stops relay attacks which could intercept the signal to unlock or start the vehicle even when the key is not in the ignition. The system includes a Guardian Mode that reports if the vehicle is suddenly unlocked or started. Jaguar recommends activating this feature during the handover procedure. Additionally to that, the Jaguar XF features an immobilizer that verifies that the key fob is used to start the engine. If the key isn't being used, the immobilizer will disable the fuel pump, ignition coil and injectors, stopping your vehicle from beginning. Modern Jaguars in contrast to older vehicles are equipped with advanced security features which require special equipment and tools for servicing. This includes diagnostic tools, such as scanners that can read the anti-theft control module's diagnostic trouble codes, and then check real-time and freeze frame data. Technicians will need to test the analog voltages throughout the entire system. This can be done by connecting a multimeter to the anti theft control module or by 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 system. Bluetooth Bluetooth has been in use for over twenty years and has revolutionized wireless communications. This technology is ubiquitous and is present everywhere from light bulbs to smartphones, and cars. To establish a Bluetooth connection between two devices, both have to be connected and be close enough for the communication to occur. You may need to access your device's settings based on the type. A iOS or Android phone has a Bluetooth menu, while desktop computers usually have one in the Control Panel. The initial Bluetooth connection needs to be paired, with the two devices exchanging their unique addresses which are represented as numbers in hexadecimal format. Unlike other RF technologies, Bluetooth is secure, with encryption and authentication that protect data transmissions. It operates in the unlicensed ISM frequency band, and a uniform set of rules and specifications differentiates Bluetooth from other protocols such as ZigBee and WiFi. Most Jaguar XF models offer Bluetooth connectivity by default and it's possible to connect your compatible phone to the car using InControl. This is done through the smartphone's Bluetooth menu. jaguar activity key vary between manufacturers, so check the InControl manual to know exactly how to do it. You may have to enter a passkey which will be displayed on the screen of your vehicle, in order to complete the connection.