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How to Replace a Jaguar XF Replacement Key Fob The high-tech keyfobs of today are not easily replaceable. As opposed to older keys made of steel that can be duplicated at any hardware store for less than $5, the modern key fobs can't be easily replaced. Drivers will be aware 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 on their Jaguar vehicle's message center. Keyless Entry Keyless entry systems are becoming more popular with car owners due to their convenience and security features. Certain models lock or unlock the door when you make contact with it, which is easier than trying to locate keys in your pockets. In find out this here , these locks tend to be more secure than standard car locks as they use rolling codes that alter each time you use the key fob. This makes it difficult for thieves to sabotage the signal or even spoof it. Key fobs emit radio frequency that carry a unique digital identification code that can only be recognized by the vehicle. When you press a button on a key fob of a Jaguar the computer in the car detects the code and responds by unlocking doors and starting the motor. The key fob also transmits signals to a receiver in the trunk that can be used to open the tailgate without hands. However, criminals are finding ways to circumvent these systems. They've been able to use software that decodes the signals transmitted by key fobs, or even remotely reprograms a key to the car's number. Many experts recommend the use of a shielded case for your keyfob. These cases limit the distance that frequencies generated by the fob travel. They are available at a majority of auto parts stores for 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 holding the key fob inside the range of your car. Push the start button once the door handles have been unlocked. If the key fob isn't in range the car will display the “SMART KEY BATTERY LOW” message. All new Jaguar models are equipped with remote-starting capability. This feature allows you to start your vehicle using your smartphone. 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 heater. You'll be able to save energy, avoid pollution and safeguard the environment while driving. In contrast to the old keys made of metal you can buy at hardware stores, these new smart keys are equipped with an integrated security chip. This security feature will protect your vehicle from being stolen should someone find it and attempts to use. This technology 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 smarter key fobs, which enable them to control their car through an app. These advanced technologies make the cars of today more convenient, efficient, and secure than ever. This added functionality comes with costs. The most recent key fobs can only be purchased at dealerships and require programming to function within your vehicle. Anti-Theft System The anti-theft system is designed to deter criminals from taking Jaguars. It uses a unique technology called Ultra Wideband (UWB) to detect the key fob's signal and confirm that it is genuine. This helps prevent relay attacks, which could intercept the signal for unlocking or starting the car when the key isn't in ignition. The system also has a Guardian Mode that reports if a vehicle is unlocked unexpectedly or started. Jaguar recommends that you activate this feature during the handover process. The Jaguar XF also features an immobilizer, which verifies that the key is used to start the engine. If the key is not being used the immobilizer will shut down the ignition coil and injectors. This will prevent the vehicle from getting started. Modern Jaguars unlike older vehicles have advanced security systems which require specialized equipment and tools to maintain. Diagnostic tools such as scanners can be used to analyze the diagnostic trouble codes of anti-theft control modules and also check for real-time data and freeze frame. Technicians will also have to physically test the voltages of analog throughout the system. You can do this by connecting a multimeter with the anti-theft control system or by using the factory software. This is usually the best method to identify the anti-theft system. If the technician spots an issue, they could need to replace the device. Bluetooth Bluetooth has been around since over 20 years and has revolutionized wireless communication. This technology is widely used and is present everywhere from lighting bulbs to smartphones and cars. To establish the Bluetooth connection between two devices, both of them need to be connected and be in close proximity for the communication to take place. You may have to go into the settings of your device based on the model. An iOS or Android phone comes with an Bluetooth menu, while a desktop computer usually has one in the Control Panel. The initial Bluetooth connection will need to be established, with the two devices exchanging their unique addresses, which are represented as numbers in hexadecimal format. As opposed to other RF technologies, Bluetooth is secure, with encryption and authentication to safeguard data transmissions. It operates in the unlicensed ISM frequency band, and a standardized set of guidelines and specifications distinguishes it from other protocols, such as ZigBee and WiFi. The majority of Jaguar XF models offer Bluetooth connectivity as standard, and you can pair a compatible phone with the car via InControl. The steps for pairing your phone with the car differ based on the manufacturer, so be sure to read the InControl manual for the exact steps. You may also need to enter a passcode for the connection to be completed, which will be shown on the touchscreen of your vehicle.