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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 Key fobs of today are not easily replaced. Drivers will know it's time to replace the battery when they see a decrease in the effectiveness of the key fob's range and a “SMART KEY BATTERY LOW” message on their Jaguar vehicle's message center. Keyless Entry Keyless entry systems are becoming more and more popular with car owners because of their convenience and security features. For instance, some models automatically lock or unlock when you press the door handle, which is easier than fumbling with keys in your purse or pocket. Additionally, these systems tend to be more secure than standard car locks as they use rolling codes that are changed each time you use the key fob. This makes it more difficult for thieves to sabotage the signal or alter it. Key fobs emit a radio frequency with an unique digital identity code that only the vehicle is able to recognize. When you hit one of the buttons on the Jaguar key fob, it transmits this code to the car's computer, which responds by unlocking the doors and kicking off the engine. The key fob also sends signals to a device in the trunk that can be used to open the tailgate hands-free. Unfortunately, thieves have discovered ways to circumvent these systems. They've been able to utilize software to decode the signals transmitted by key fobs, or remotely reprogram a new key using the transponder codes of the car. Many experts suggest installing a shielded case on your keyfob. These cases limit the distance at which frequencies that the fob emits travel. They can be found at most auto parts stores for less than $10. Remote Start You can utilize your Jaguar XE key fob to lock, unlock and start your car remotely. Press and hold the lock button while holding the key fob within range of your vehicle. The start button should be pressed once the door handles are unlocked. If the key fob isn't in range the car will display a “SMART KEY BATTERY LOW” message. All new Jaguar models are equipped with remote-starting capabilities. This feature lets you start your vehicle using your smartphone. This is especially helpful if you're returning home after a long trip or when it's cold outside to turn on the heating. You'll be able to conserve energy, avoid pollution and safeguard the environment while you're on the road. Unlike the old metal keys you can purchase at a hardware store These new smart keys contain an integrated security chip. This security feature helps protect your vehicle from being stolen if someone finds it and attempts to use. This technology makes it difficult for car thieves and locksmiths to duplicate these keys. You'll have to visit your dealer for a replacement Jaguar XF key. The days of buying replacement car keys at your local hardware store are disappearing into the past as modern automobile owners choose to use more sophisticated key fobs that allow you to control your vehicle using an app. The latest technologies make vehicles more secure, easy to use and efficient than ever. This extra functionality comes at a price. The most recent key fobs are only available from dealers and are required to be programmed in your vehicle. Anti-Theft System The anti-theft system has been designed to stop criminals from taking Jaguars. It makes use of a technology known as Ultra Wideband to detect and verify the signal from the key fob. This stops relay attacks, which could intercept the signal used for unlocking or starting the vehicle when the key isn't in ignition. The system also includes Guardian Mode, which reports when the vehicle is locked or started in a sudden manner. Jaguar recommends activating this feature during the handover process. Additionally the Jaguar XF features an immobilizer that checks to see if the key fob is being used to start the engine. If the key is not being used the immobilizer will disable the ignition coil and injectors, which will stop the car from starting. In contrast to older cars and vehicles, modern Jaguars are equipped with sophisticated security features that require specialized tools and equipment to maintain. This includes diagnostic tools, such as a scanner that can detect the anti theft control module's diagnostic trouble codes and also check the freeze and real-time data. The technician also needs to physically test analog voltages throughout the system. This can be done by connecting a multimeter to the anti theft control module or using factory software. This is the most common method of diagnosing an anti-theft system. If the technician discovers any issue, they could need to replace the module. Bluetooth Bluetooth has been in use for more than two decades and has revolutionized wireless communications. This technology is everywhere from lights to cars and smartphones. Both devices need to be on, and positioned close to each other in order for communication to take place. You may have to go into the settings of your device, based on the model. An iOS or Android phone will have a Bluetooth menu and a desktop computer will usually have one in the Control Panel or the System Preferences. The initial Bluetooth connection will have to be paired and the two devices exchanging their unique addresses, which are presented as hexadecimal values. Contrary to other RF technologies, Bluetooth is secure, with encryption and authentication to secure data transmissions. Bluetooth operates on the unlicensed ISM band and has a standard set of rules and specifications which distinguishes it from other protocols such as ZigBee or WiFi. Most Jaguar XF models offer Bluetooth connectivity by default and it is possible to pair a compatible phone with the car using InControl. The steps to pair your phone with the car vary depending on the manufacturer, so be sure to read the InControl manual for the precise steps. jaguar key shell The Key Lab is also possible enter a passcode to complete the connection, which will be shown on the touchscreen of your vehicle.