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How to Replace a Jaguar XF Replacement Key Fob The modern, high-tech keyfobs can't be easily replaced. As opposed to older keys made of steel that can be copied at any hardware store for less than $5, modern key fobs can't be easily replaced. The battery will have to be replaced if the range of the key fob decreases and the Jaguar vehicle's message center shows the message “SMART KEY” BATTERY IS LOW. Keyless Entry The convenience and security of keyless entry systems are increasing in popularity with car buyers. Certain models lock or unlock the door when you touch it, which is much easier than searching for keys in your pockets. In addition, these locks tend to be more secure than standard car locks due to the fact that they employ rolling codes that change every time you use the key fob. This makes it much more difficult for thieves to sabotage the signal or spoof it. Key fobs emit radio frequency with a unique, digital identification code that can only be recognized by the vehicle. When you press a button on a key fob from Jaguar, the computer in the car receives the code and responds by unlocking doors and triggering the motor. The key fob can also send a signal to a trunk receiver that can be used for opening the tailgate without having to open it. Unfortunately, thieves are able to bypass these systems. They've been able to utilize software to decode the signals transmitted by key fobs or remotely reprogram a new key with the transponder code for your car. This is why many experts suggest adding an enclosed protection case to your key fob. These cases limit the distance at which frequencies generated by the fob travel, and they are readily available at many auto parts stores for under $10. Remote Start You can make use of your Jaguar XE key fob to lock, unlock, or start your car remotely. To activate the feature just press and hold down the lock button while securing the key fob within the range of your vehicle. The start button should be pressed once the door handles have been unlocked. If the key fob cannot be found, the vehicle will display the message “SMART Key Battery Low”. Most of the new Jaguar models are equipped with remote-start technology. With this feature, you are able to start your vehicle's engine through the comfort of your phone. This feature is especially useful in the event that you're returning home from a long drive or it's too cold turn on the heater. You'll be able to save fuel, reduce pollution and safeguard the environment while driving. As opposed to the old metal keys you can buy at hardware stores These new smart keys contain an integrated security chip. This security feature prevents your car from being taken by someone else who discovers and tries to use it. This technology makes it hard for car thieves and locksmiths to duplicate keys. You'll need to go to your dealer to purchase a the replacement Jaguar XF key. The days of purchasing keys for replacement at your local hardware store are disappearing into the past, as modern car owners opt for smarter key fobs that let you control your vehicle from an app. The latest technologies make vehicles more secure, easy to use and more efficient than ever. The added convenience comes at the cost of. The most recent key fobs are only available at dealerships and require programming to function within your vehicle. Anti-Theft System The anti theft system is designed to stop criminals from taking your Jaguar. It utilizes a technology known as Ultra Wideband to detect and verify the key fob's signal. This blocks relay attacks which could intercept the signal to unlock or start the car even when the key isn't in the ignition. The system also includes Guardian Mode, which reports when the vehicle is not locked or started abruptly. Jaguar suggests that you turn on this feature as part of the handover process. In addition the Jaguar XF features an immobilizer that ensures that the key fob is used to turn on the engine. If the key isn't being used the immobilizer will shut down the fuel pump, ignition coil and injectors, stopping your vehicle from starting. Contrary to older models that were built in the past, modern Jaguars come with sophisticated security systems that require specialized tools and equipment for servicing. This includes diagnostic tools such as a scanner that can read the anti-theft control module's diagnostic trouble codes and check real-time and freeze frame data. The technician will also have to physically test the voltages of analog throughout the system. This can be done by connecting a multimeter with the anti-theft module or using the factory software. This is the most popular method to identify an anti-theft system. If the technician finds a problem, they may have to replace the system. Bluetooth Bluetooth has been around since more than 20 years ago and has revolutionized wireless communication. Bluetooth technology is everywhere from lights to cars and even smartphones. To set up a Bluetooth connection between two devices, both have to be on and be within a reasonable distance for the communication to take place. You may need to go into the settings of your device depending on the model. A iOS or Android phone comes with an Bluetooth menu, whereas desktop computers usually have one located in the Control Panel. The initial Bluetooth connection needs to be paired with both devices exchanging unique addresses, that are numbers in hexadecimal format. Unlike other RF technologies, Bluetooth is secure, with encryption and authentication to secure data transmissions. www.g28carkeys.co.uk operates in the unlicensed ISM frequency band, and a standardized set of rules and specifications distinguishes Bluetooth from other protocols like ZigBee and WiFi. The majority of Jaguar XF models offer Bluetooth connectivity as standard, and you can pair any compatible phone to the vehicle using InControl. This is accomplished through the smartphone's Bluetooth menu. The steps differ between different manufacturers, so check the InControl manual to learn how to do it. It is possible that you will need to enter a passkey, which will be displayed on the screen of your vehicle, in order to complete the connection.