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How to Replace a Dead Coin Battery in Your Jaguar XF The Jaguar Smart Key allows you to lock and unlock your Jaguar quickly. It also provides security features such as the capability to “double lock” your vehicle, stopping thieves from breaking windows to gain access. However, there are jaguar key fobs that your Jaguar XF key fob might not work. A few of them are a dead battery, signal interference and an unreliable chip. Dead coin battery Modern electronic keys provide greater convenience and security over traditional keys that are manually operated. They can be used to lock and unlock the vehicle, turn on lights and start the motor. They also have features that allow you to drive more easily. They are prone to losing their charge with time. If you have noticed that your Jaguar XF's key fob isn't working, it could be due to a dead coin battery. It's easy to replace. Crofton drivers can tell it's time to replace the battery when their key fob stops working or becomes less effective at locking and unlocking from a distance. The Jaguar InControl ® touchscreen interface could display a message saying “Smart key battery is depleted”. Slide the blade of the emergency key out to remove the cover of the key fob. Then pull the emergency key in order to remove the chrome side bits, and then break the two pieces of the key fob's body. Replace the battery that was used, ensuring that the positive side is facing upward. Water damage If your Jaguar XF key fob has been exposed to soapy water or has been exposed to salt water, the electronic chip inside could be damaged. The key fob may not function and you will need to purchase a replacement from a dealer. In this instance it is recommended to disassemble the key fob and clean the metal clips as well as the electronic chip using isopropyl alcohol. Signal interference could be the reason of a remote that doesn't work. This could be caused due to nearby transmitters operating on the same frequency as the remote control of your XF or by obstructions like buildings or trees. The remote control will continue to work if you move away from the source of interference. Your Jaguar is designed to ensure that it constantly monitors itself from engine's performance, to emissions, to brakes and lights. This means that if your car begins to lose battery power, you'll receive warnings. The key fob will lose range and you will receive a message stating “SMART KEY low battery”. It is necessary to replace the battery in your Jaguar XF keyfob battery as fast as you can in order to avoid any issues. Contacts for the battery that are defective Jaguar key fobs offer many more features than traditional mechanical keys. They are also more sophisticated. As with any electronic device, these can wear out over time or stop working altogether. If the lock button on your Jaguar key fob begins to fail, it's likely that the battery will need to be replaced. The majority of auto parts stores sell replacement batteries for Jaguar key fobs. Before you replace the battery make sure it is an original Jaguar part. This will ensure that it is the right size and voltage. Handling the battery with care is vital, as skin moisture and oil may be transferred to the outer edges, which can reduce battery life and corroding the contacts. A Jaguar key fob can be used as an remote control that allows you to unlock the doors of your car as well as to turn off the alarm and open the sunroof as well as windows. It can double-lock your vehicle to keep it safe from thieves. The Jaguar key fob is protected by a metal casing, making it hard to break or damage. Receiver module that is defective The key fob operates by transmitting a low-frequency radio signal which is detected by the receiver module inside your Jaguar. The receiver module receives the signal from your smart keys and opens the door locks, or disarms the security system. The module also lets you to start your car and control the audio system. If the receiver module is defective it may stop working. To resolve the issue remove the 12 volt battery by disconnecting it from both terminals and letting it sit for about a couple of minutes. Then reconnect the battery in reverse. Interference from nearby objects or transmitters using the same frequency are another reason that is commonly cited for Jaguar XF keyfob not working. Interference can also block the Body Control Module (BCM) from being able to recognize the key signals. The key fob can be reset to function again by following the steps in the owner's manual. Electronic chip malfunctions Jaguar key fobs are equipped with digital, coded transponder chips. These chips receive a unique remote control signal and transmit it to your car's receiver module. If the receiver module is malfunctioning, you will not be capable of using the key fob to lock or unlock your vehicle. Fortunately, there are common causes of this problem that you can fix yourself. Make sure the button on the key fob is working. If it's not, it's likely that the button or contact is damaged. It is important to replace the battery correctly. Be sure to choose a battery that is the same size, voltage, and specification as the original. Make sure the new battery does not come into contact with water or salt. If your Jaguar key fob has a problem, it is important to find a skilled locksmith who can repair or replace it. This kind of service is costly, but it's significantly less expensive than purchasing an alternative key fob from the dealer. You can do this job yourself if the appropriate equipment.