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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 will need to be replaced if the key fob’s range decreases and the Jaguar vehicle's message center shows the message “SMART KEY” BATTERY IS LOW. Keyless Entry Keyless entry systems are becoming more popular with car buyers, thanks to their convenience and security features. Certain models lock or unlock the door when you touch it, which is less hassle than searching for keys in your pocket. These locks are also more secure than standard locks, as they use rolling codes that change each time you use your key fob. This makes it difficult for thieves to hijack the signal or alter it. Key fobs emit radio frequencies with a unique digital identification code that can only be recognized by the vehicle. When you press a button on a Jaguar's key fob the computer inside the car receives the number and responds by opening doors and starting the motor. The key fob also transmits an alert to a receiver in the trunk which can be used to open the tailgate hands-free. Unfortunately, thieves have discovered ways to evade these systems. They've been able to use software that can decode the signals sent by the key fobs and even remotely reprograms a new key to the car's security code. Many experts recommend using a shielded cover for your keyfob. These cases limit the distance at which frequencies emitted by the fob can travel. 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 and start your vehicle remotely. To activate the feature, press and hold the lock button while securing the key fob in the range of your vehicle. Push the start button once the door handles have been locked. If the key fob can't be opened, the car will display the message “SMART Key Battery Low”. Most of the new Jaguar models come with remote-start capabilities. With this feature, you can turn on your vehicle's engine through the convenience of your phone. This is especially helpful if you're returning home after a long trip or when it's too cold to crank up the heater. You can save fuel while reducing pollution and protecting the environment while driving. These new smart keys have built-in security chips and are not like the old keys made of steel that you buy at hardware stores. This security feature helps protect your vehicle from theft should someone find it and attempts to use. This technology makes it difficult for car thieves and locksmiths to duplicate keys. You'll have to visit your dealer to purchase a replacement Jaguar XF key. Modern automobile owners are opting for smarter keys that allow them to control their vehicle through an app. The latest technologies make vehicles more secure, convenient and reliable than ever. However, that extra function comes at a cost: the latest key fobs are required to be purchased from the dealership and programmed to work with your vehicle. Anti-Theft System The anti-theft device is designed to deter criminals from stealing Jaguars. It utilizes a new technology known as Ultra Wideband (UWB) to detect the key fob's signal and verify it's genuine. This is to prevent relay attacks which can snoop on the signal for unlocking or starting the car when the key isn't inserted in the ignition. The system also comes with Guardian Mode, which reports that the vehicle has been locked or started in a sudden manner. Jaguar suggests that you turn on this feature during the handover process. The Jaguar XF also features an immobilizer that ensures that the key is being used to start the engine. If the key is not being used the immobilizer will turn off the ignition coil and injectors. This will prevent the vehicle from getting started. Modern Jaguars unlike older vehicles, have sophisticated security systems which require specialized equipment and tools for servicing. Diagnostic tools like scanners are used to detect diagnostic trouble codes of anti-theft control modules and verify real-time information and freeze frame. The technician should test analog voltages in the entire system. This can be done by connecting a multimeter to the anti theft control system or using factory software. This is the most popular method of identifying an anti-theft system. If the technician finds problems, they may have to replace the system. Bluetooth Bluetooth has been around for over 20 years, and has revolutionized wireless communication. The technology is everywhere and can be found in everything from light bulbs to smartphones, and automobiles. Both devices need to be on and placed close to each other in order for communication to occur. You may have to go into your device's settings depending on the model. An iOS or Android phone has a Bluetooth menu, while a desktop computer usually has one in the Control Panel. The first Bluetooth connection is required. Both devices will exchange unique addresses (which are displayed as hexadecimal numbers). Unlike jaguar keys replacement , Bluetooth is secure, with encryption and authentication to secure data transmissions. It operates in the unlicensed ISM frequency band, and a standard set of specifications and rules differentiates it from other protocols like ZigBee and WiFi. InControl allows you to connect a compatible smartphone with most Jaguar XF models. This is done via the phone's Bluetooth menu. The steps vary from manufacturer to manufacturer, so check the InControl manual to find out exactly what you need to do. You may be required to enter a passkey, which is displayed on the screen of your vehicle, in order to complete the connection.