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How to Replace a Jaguar XF Replacement Key Fob Modern keyfobs that are high-tech can't be easily replaced. As opposed to older keys made of steel, which can be copied at any hardware store for less than $5, the modern key fobs aren't easily replaced. Drivers will know it's time to replace the battery when they notice a decrease in the key fob's effectiveness 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 is becoming popular among car owners. Certain models lock or unlock the door when you make contact with it, which is less hassle than trying to find keys in your pockets. These systems are also more secure than standard locks since they employ rolling codes that change every time you use your key fob. This makes it much more difficult for thieves to hijack or alter the signal. Key fobs emit radio frequencies with a unique identification code that is only recognized by the vehicle. When you hit one of the buttons on a Jaguar key fob, it transmits the code to the car's computer, which in turn responds by unlocking the doors as well as starting the engine. Key fobs can also send a signal through the trunk receiver that can be used for opening the tailgate without touching it. Unfortunately, thieves have found ways to bypass these systems. They've been able to use software that decodes the signals transmitted by key fobs or even remotely reprograms keys to the car's number. Many experts recommend adding a shielded case to your key fob. These cases limit the distance at which frequencies that the fob emits travel, and they can be found at most auto parts stores for less than $10. Remote Start Your Jaguar XE keyfob can be used to remotely lock or unlock your vehicle. To activate the feature, press and hold the lock button while holding the key fob within range of your vehicle. Press the start button when the door handles have been unlocked. If watch this video is not able to be found, the car will display the message “SMART KEY Battery Low”. The majority of the latest Jaguar models offer remote-start capability. This feature allows you to start your vehicle from your smartphone. This feature is especially helpful when you're returning to your home after a long road trip or it's too cold turn on the heating. You can conserve fuel and reduce pollution, as well as protect the environment when you're driving. Unlike the old metal keys that you can purchase from hardware stores the new smart keys come with an integrated security chip. This security feature will prevent your vehicle from being taken by someone else who finds and tries to use the. This technology makes it difficult for locksmiths and car thieves to duplicate these keys. You'll have to visit your dealer for a replacement Jaguar XF key. Modern automobile owners are opting for smarter keys that enable the vehicle to be controlled via an app. These new technologies make vehicles safer, more convenient and efficient than ever. This additional functionality comes at cost. The most recent key fobs can only be purchased from dealerships and are required to be programmed inside your vehicle. Anti-Theft System The anti-theft system is designed to discourage criminals from taking Jaguars. It utilizes a new technology called Ultra Wideband (UWB) to detect the key fob signal and confirm it's authentic. This prevents so-called relay attacks that could interfere with the signal to unlock or start the vehicle even when the key isn't in the ignition. The system also features Guardian Mode, which reports that the vehicle has been locked or started unexpectedly. Jaguar recommends activating this feature during the handover procedure. The Jaguar XF also features an immobilizer, which verifies that the key is used to start the engine. The immobilizer turns off the ignition coil, and injectors when the key fob isn't being used. This stops your car from getting started. In contrast to older cars and vehicles, modern Jaguars have sophisticated security systems that require special tools and equipment for servicing. This includes diagnostic tools like scanners that can read the anti theft control module's diagnostic trouble codes, and then check real-time and freeze frame information. The technician 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 factory software. This is the simplest method to identify an anti-theft system. If the technician discovers an issue, they might have to replace the module. Bluetooth Bluetooth has been around for more than 20 years and has revolutionized wireless communication. This technology is everywhere from light bulbs to cars and even smartphones. To set up a Bluetooth connection between two devices, both need to be on and be close enough for the communication to take place. You may need to access the settings of your device based on the type. An iOS or Android phone comes with a Bluetooth menu, whereas desktop computers typically have one in the Control Panel. The first Bluetooth connection is required. Both devices exchange unique addresses (which are displayed as Hexadecimal numbers). Bluetooth is, unlike other RF technologies is secure. It employs encryption and authentication to secure data transmissions. It operates on the unlicensed ISM band and has a standard set of rules and specifications that distinguishes it from other protocols such as ZigBee or WiFi. InControl allows you to connect a compatible smartphone with most Jaguar XF models. This is done through the phone's Bluetooth menu; the steps vary between manufacturers, so check the InControl manual to learn the procedure to follow. You may also have to enter a passkey to connect, which will be displayed on your vehicle's touchscreen.