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How to Replace a Dead Coin Battery in Your Jaguar XF The Jaguar Smart Key system allows you to lock your Jaguar quickly and easily. It also has security features like the ability to “double lock” the vehicle to stop thieves from breaking into your windows to gain entry. However, there are many reasons why your Jaguar XF key fob might not function. There are a variety of reasons, including a malfunctioning battery, signal interference, and the chip is defective. Dead coin battery Modern electronic key fobs provide more convenience and security than traditional manual keys. They can lock and unlock your car, turn on the lights and start the engine. They also come with additional features to make driving easier. They are prone to losing their charge over time. If you have noticed that your Jaguar XF's key fob isn't working, it could be due to a dead battery in the coin. The good news is that replacing it is a quick and easy fix. Crofton drivers will be aware that it's time to get an upgrade to their battery when the key fob becomes less effective in locking and unlocking over long distances, or it stops working completely. You might also get an email on your Jaguar InControl ® touchscreen interface that reads “Smart key battery low”. Slide the blade for the emergency key out to take off the cover of the fob. Then, pull the emergency key to release the chrome side bits and separate the two parts of the key fob's body. Replace the battery that was used with a new one making sure you place it with the positive side facing upward. Water damage If your Jaguar XF key fob has been through a bath with soapy water, or was exposed to salt water, the chip inside may be damaged. This can stop the key fob from working and you will need an alternative from your dealer. In this case you should disassemble your key fob and clean the metal clip that holds it and the chip using isopropyl ethanol. Signal interference could be the cause of a remote control that doesn't function. This can be caused by nearby transmitters that operate on the same frequency as the remote control of your XF or by obstructions like trees or buildings. The remote control will continue work if you move away from the source of interference. Your Jaguar is designed so that it monitors itself continuously all the way from engine's performance, to emissions, to brakes and lights. This means that if your car begins to lose battery power, you'll be notified by warnings. One of these will be a decrease in the range of your key fob and another one will be a message that reads “SMART KEY BATTERY LOW.” It is recommended to replace the Jaguar XF key fob battery immediately to avoid problems. Contacts to the battery are not working properly. Modern Jaguar key fobs are far more sophisticated than traditional mechanical keys, and offer a variety of additional features. Like any electronic device they will wear out over time or cease 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. You can purchase replacement batteries for your Jaguar key fob from most auto parts stores. However, before replacing the battery, ensure that the battery you purchase is genuine Jaguar part. This will guarantee that it's the right size and voltage. It is also essential to handle the battery carefully since touching its outer edges could transfer skin moisture and oil that can shorten battery life and also corrode the contacts. jaguar key fobs is a remote control which can unlock the doors of your car and activate the alarm and open the windows and sunroof. It can double-lock your vehicle to guard it from thieves. The Jaguar key fob is secured by a steel casing, making it difficult to break or scratch. A malfunctioning receiver module The key fob works by transmitting a low-frequency radio signal that is interpreted by the receiver module of your Jaguar. This module receives the signal from your smart keys and opens the door locks, or disables the security system. This module also allows you to start your vehicle and control the audio system. The receiver module can stop working if it is faulty. Remove the battery of 12 volts by disconnecting both terminals. It should take a few seconds. Reconnect the battery in reverse. Another common reason for Jaguar XF key fob not functioning is interference from other objects or transmitters on the same frequency. Interference can also block the Body Control Module (BCM) from understanding the key signals. The key fob is reprogrammed to work again by following the directions in the owner's manual. Faulty electronic chip Jaguar key fobs are equipped with transponder electronic, coded chips. The chips read a specific signal from the remote control and transmit it to the receiver module that is in your car. If this receiver module becomes defective, you won't be allowed to use your key fob to unlock or lock your car. Fortunately, there are common causes that you can fix yourself. First, make sure that the key fob's contact button is functioning correctly. If not, it's possible that the button or contact is worn out. It is also important to replace the battery correctly. Make sure you use a battery that has the same dimensions, voltage and specifications as the original. Also, ensure that the new battery is not exposed to salt or water. It is crucial to find an experienced locksmith that is able to repair or replacing your Jaguar key fob. This kind of service is costly, but it's much cheaper than buying a new key fob at the dealer. If you have the right tools, you can do this yourself.