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How to Replace a Jaguar XF Replacement Key Fob Contrary to older keys made of metal that can be copied for less than $5 at any hardware store Today's modern key fobs cannot be replaced easily. The battery must be replaced if the range of the key fob diminishes and the Jaguar vehicle's message center displays the message “SMART KEY” BATTERY LOW. Keyless Entry The convenience and security of keyless entry systems is growing in popularity with car owners. Certain models lock or unlock the door when you make contact with it, which is a lot easier than searching for keys in your pocket. These systems are also more secure than standard locks because they utilize rolling codes that change each time you use your key fob. This makes it difficult for thieves to steal the signal or to spoof it. Key fobs emit a radio frequency that has a unique digital identity number that only the vehicle can recognize. When you press one of the buttons on a Jaguar key fob, it sends this code to the car's computer, which then responds by opening the doors and kicking off the engine. The key fob also sends signals to a device in the trunk that can be used to open the tailgate without hands. However, criminals are finding ways around these systems. They have been able to utilize software to decode the signals sent by key fobs, or even remotely reprogram a new key using the transponder code of your car. For this reason, many experts recommend adding a shielded protection case to your key fob. These cases limit the distance that the frequencies generated by the fob can be transmitted. They are available at the majority of 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. Press and hold the lock button, while keeping the key fob within reach of your car. After the door handles have been unlocked, push the start button to start your engine. If the key fob isn't in range the car will display a “SMART KEY BATTERY LOW” message. Most new Jaguar models are equipped with remote-start technology. With this feature, you can turn on the engine of your vehicle from the convenience of your phone. This is especially useful when you're returning to your home from a long drive or when it's too cold outside to crank up the heater. You can save fuel and reduce pollution, as well as protect the environment while driving. The new smart keys come with integrated security chips and are not like the old metal keys you could purchase from hardware stores. This security feature will protect your vehicle from being stolen should someone find it and tries to use. This also makes it difficult for locksmiths to duplicate keys, which is why you'll have to visit your dealer to purchase replacement Jaguar XF keys. Modern automobile owners are opting for smarter key fobs that enable the control of their vehicle through an app. The latest technologies make modern vehicles more convenient, efficient, and secure than ever. However, this extra functionality comes at a cost for the latest key fobs. They need to be purchased from a dealer and programmed with your vehicle. The Key Lab -Theft System The anti-theft system is designed to stop criminals from theft of your Jaguar. It utilizes a unique technology called Ultra Wideband (UWB) to detect the key fob signal and confirm that it is genuine. This is to prevent relay attacks which can intercept the signal to unlock or starting the vehicle when the key isn't in the ignition. The system also features Guardian Mode, which reports when the vehicle is locked or started in a sudden manner. Jaguar recommends activating this feature during the handover process. Additionally the Jaguar XF features an immobilizer that ensures that the key fob is being used to turn on the engine. If the key is not being used the immobilizer will turn off the fuel pump, ignition coil and injectors. This will prevent your car from starting. Modern Jaguars unlike older vehicles have advanced security systems that require special equipment and tools to service. Diagnostic tools like scanners are used to identify the diagnostic trouble codes of the anti-theft control modules and to check the real-time data as well as freeze frame. The technician should check the voltages of analog in the entire system. You can do this by connecting a multimeter with the anti-theft control system or using the factory software. This is generally the best method to determine the condition of the anti theft system. If the technician discovers an issue, they might need to replace the device. Bluetooth Bluetooth has been in use for over 20 years, and has revolutionized wireless communication. It is a common technology appearing in everything from lights to smartphones and cars. To establish a Bluetooth connection between two devices, both need to be connected and be close enough for the communication to occur. You may have to go into your device's settings depending on the type of device. An iOS or Android phone has an 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). Bluetooth, unlike other RF technologies is secure. It uses encryption and authentication to secure data transmissions. Bluetooth operates in the unlicensed ISM frequency band, and a standard set of rules and specifications differentiates it from other protocols like ZigBee and WiFi. InControl allows you to pair an compatible smartphone to most Jaguar XF models. This is done through 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 be required to enter a passkey, which will be displayed on the screen of your vehicle, to complete the connection.