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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 keys of today aren't able to be replaced. Drivers will know it's time to replace the battery if they see a decrease in the effective range and a “SMART KEY BATTERY LOW” message on their Jaguar vehicle's message center. Keyless Entry The convenience and security of keyless entry systems are growing in popularity with car owners. Some models lock or unlock the door when you touch it, which is less hassle than searching for keys in your pockets. These locks are more secure than standard locks, since they employ rolling codes that change every time you use your key fob. This makes it harder for thieves to steal or spoof the signal. Key fobs emit a radio frequency, which has an unique digital identity code that only the vehicle can recognize. When you press the button on a key fob from Jaguar and the computer in the car receives the number and responds by opening doors and starting the motor. The key fob also sends an alert to a receiver inside the trunk that can be used to open the tailgate without hands. However, criminals are able to get around these systems. They've been able to employ software that decodes the signals sent by key fobs, or even 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 frequencies that the fob emits travel, and they are available at a majority of auto parts stores for less than $10. Remote Start You can use your Jaguar XE key fob to lock, unlock, or start your vehicle remotely. Press and hold the lock button while keeping the key fob in range of your car. Press the start button after the door handles are unlocked. If the key fob isn't in range, the car will display the “SMART KEY BATTERY LOW” message. All new Jaguar models come with remote-starting capabilities. The Key Lab allows you to start your car from your smartphone. This feature is particularly useful when you are returning home from a long drive or when it's too cold turn on the heating. You can save money on fuel, reduce pollution and protect the environment while driving. As opposed to the old metal keys you can buy at a hardware store the new smart keys come with a security chip that is integrated into. This security feature helps protect your vehicle from theft in the event that someone stumbles across it and attempts to use. This technology also makes it difficult for locksmiths to copy keys, which is why you'll have to go to your dealer for replacement Jaguar XF keys. Modern car owners are opting for smarter key fobs that enable the control of their vehicle via an app. These advanced technologies make cars more secure, convenient and efficient than ever. This added functionality comes with the cost of. The most recent key fobs are available only from dealers and need to be programmed within your vehicle. Anti-Theft System The anti-theft system has been designed to stop criminals from stealing Jaguars. It utilizes a new technology called Ultra Wideband (UWB) to detect the key fob's signal and confirm it's authentic. This stops relay attacks, which could intercept the signal to unlock or starting the car even if the key isn't in ignition. The system also includes Guardian Mode, which reports that the vehicle has been locked or started in a sudden manner. Jaguar suggests activating this feature during the handover procedure. The Jaguar XF also features an immobilizer, which ensures that the key is used to start the engine. If the key is not being used the immobilizer will shut down the fuel pump, ignition coil and injectors, which will stop the car from getting started. Modern Jaguars like older models have advanced security systems that require specialized equipment and tools to maintain. Diagnostic tools, such as scanners can be utilized to analyze the diagnostic trouble codes of anti theft control modules and to check the real-time data as well as freeze frame. Technicians will need to examine the voltages analog across the entire system. This can be accomplished by connecting a multimeter to the anti theft control module, or using the factory software. This is generally the best method to determine the condition of the anti-theft system. If the technician discovers a problem, they may have to replace the system. Bluetooth Bluetooth has been in use for over twenty years and has revolutionized wireless communications. Bluetooth technology is everywhere from automobiles to light bulbs and even smartphones. To set up a Bluetooth connection between two devices, both need to be connected and be within a reasonable distance for the communication to take place. You may have to go into the settings of your device based on the type. An iOS or Android phone comes with an Bluetooth menu, whereas a desktop computer usually has one located in the Control Panel. The first Bluetooth connection is required. Both devices will exchange their unique addresses (which are displayed as Hexadecimal numbers). Unlike other RF technologies, Bluetooth is secure, with encryption and authentication that protect data transmissions. Bluetooth operates on the unlicensed ISM band and has a set of standard rules and specifications that distinguishes it from other protocols such as ZigBee or WiFi. The majority of Jaguar XF models offer Bluetooth connectivity as standard and it's possible to connect an compatible smartphone to the vehicle using InControl. This is done using the smartphone's Bluetooth menu. The steps vary from manufacturer to manufacturer and models, so make sure to read the InControl manual to know exactly what you need to do. You may also need to enter a passcode to connect, which will be displayed on your vehicle's touchscreen.