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How to Replace a Jaguar XF Replacement Key Fob The modern, high-tech keyfobs cannot be replaced easily. Unlike older metal keys that can be copied at any hardware store for less than $5, the modern key fobs aren't easily replaced. Drivers will know when it's time to replace the battery when they see a decrease in the effectiveness of the key fob's range, as well as a “SMART Key Battery Low” message in their Jaguar vehicle's message center. Keyless Entry The convenience and security of keyless entry systems is gaining popularity among car buyers. For instance, some models automatically lock or unlock when you tap the door handle, which is less trouble than fumbling around with keys in your bag or pocket. These locks are also more secure than standard locks because they use rolling codes which change every time you use your key fob. This makes it more difficult for thieves to steal 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 the button on the Jaguar's key fob the computer in the car receives the number and responds by unlocking doors and triggering the motor. The key fob also sends an alert to a receiver in the trunk that can be used to open the tailgate hands-free. However, criminals have discovered ways to bypass these systems. They have been able use software that decodes signals transmitted by key fobs, or even remotely reprograms keys to the car's code. Many experts suggest the use of a shielded case for your key fob. These cases limit the distance at which frequencies generated by the fob travel. They can be found at most auto parts stores for under $10. Remote Start You can use your Jaguar XE key fob to lock, unlock, and start your vehicle remotely. Press and hold the lock button while keeping the key fob within reach of your car. Press the start button after the door handles have been unlocked. If the key fob isn't in range the car will display the “SMART KEY BATTERY LOW” message. Most of the new Jaguar models offer remote-start capability. This feature allows you to start your vehicle using your smartphone. This feature is particularly helpful when you are returning home from a long drive or when it's too cold turn on the heater. You can save money on fuel while reducing pollution and protecting the environment while driving. The new smart keys come with built-in security chips unlike the older metal keys that you can buy at hardware stores. This security feature will protect your vehicle from being stolen when someone discovers it and tries to use. This technology makes it hard for car thieves and locksmiths to duplicate keys. You'll need to visit your dealer to obtain a replacement Jaguar XF key. Modern car owners are choosing smarter key fobs, which enable the control of their vehicle through an app. These new technologies make vehicles more secure, convenient and more efficient than ever. However, replacement jaguar key fob added convenience comes at a price that is why the most recent key fobs need to be purchased from a dealership and then programmed with your vehicle. Anti-Theft System The anti theft system is designed to stop criminals from stealing your Jaguar. It utilizes a technology known as Ultra Wideband to detect and verify the signal from the key fob. This prevents so-called relay attacks, which can take advantage of the signal to unlock or start the car when the key is not in the ignition. The system comes with a Guardian Mode that reports if the vehicle is locked unexpectedly or started. Jaguar suggests activating this feature during the handover process. The Jaguar XF also features an immobilizer that ensures that the key is used to start the engine. If the key is not being used the immobilizer will turn off the fuel pump, ignition coil, and injectors, preventing your vehicle from beginning. Unlike older vehicles and models, modern Jaguars come with sophisticated security systems that require special tools and equipment to service. This includes diagnostic tools such as a scanner that can detect the anti theft control module's diagnostic trouble codes and also check real-time and freeze frame information. Technicians will need to check the voltages of analog in the entire system. You can do this by connecting a multimeter to the anti-theft control system or using the factory software. This is the most common method of identifying the anti theft system. If the technician discovers an issue, they may require replacing the module. Bluetooth Bluetooth has been around for more than two decades and has revolutionized wireless communications. This technology is ubiquitous and is present everywhere from lighting bulbs to smartphones and cars. To establish a Bluetooth connection between two devices, both of them need to have it turned on and be close enough for the communication to occur. You may need to go into the settings of your device based on the type. An iOS or Android phone has an Bluetooth menu, whereas desktop computers usually have one located in the Control Panel. The first Bluetooth connection is required. Both devices exchange unique addresses (which are displayed as hexadecimal numbers). Contrary to other RF technologies, Bluetooth is secure, with encryption and authentication to secure data transmissions. Bluetooth operates on the unlicensed ISM band and is governed by an established set of rules and specifications that differentiate it other protocols such as ZigBee or WiFi. The majority of Jaguar XF models offer Bluetooth connectivity by default and it's possible to connect your compatible phone to the car using InControl. The steps to pair your phone to the car vary depending on the manufacturer, so be sure to read the InControl manual for the precise instructions. You may also have to enter a passcode to connect, which will be shown on your vehicle's touchscreen.