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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 has security features, including the ability to “double lock” an automobile to stop thieves from breaking windows to gain access. There are a myriad of reasons for why the Jaguar XF keyfob may not work. It could be due to a dead or defective coin battery, signal interference and a damaged electronic chip. Dead coin battery Modern electronic keys provide greater convenience and security over traditional manual keys. They can be used to lock and unlock the vehicle, turn on the lights and start the engine. They also have features that make driving more comfortable. However, they will lose their charge as time passes. If you're Jaguar XF key fob has stopped working, it could be because the battery is dead. The good news is that replacing it is a simple and easy fix. Crofton drivers will know it's time to replace the battery when their key fob stops working or isn't as effective in locking and unlocking from at a distance. You might also get an alert on your Jaguar InControl ® touchscreen interface that reads “Smart key battery low”. Slide the blade of the emergency key out to take off the cover of the fob. Pull the emergency key to eliminate any chrome bits on the side and separate the two halves of the key fob. Replace the battery that was used by ensuring that the positive side is facing upward. Water damage The electronic chip in your Jaguar XF's key fob could be damaged if has been exposed to salt water or has survived an in-salinity bath. The key fob may not function and you'll have to purchase a replacement from a dealer. In this case you should disassemble your key fob, and clean the metal clip that holds it and the chip with isopropyl alcohol. Signal interference could be a cause of a remote that doesn't work. This could be caused by nearby transmitters operating on the exact frequency as the remote control from XF or caused by objects like buildings or trees. If you relocate the remote control will be able to work. Your Jaguar is built so that it is constantly monitoring itself all the way from engine's performance through emissions to brakes and lights. This means that if your car begins to run low on battery power, you'll be notified by warnings. One of them will be a decrease in the range of your key fob. The another warning message that reads “SMART KEY BATTERY LOW.” It is recommended to replace the Jaguar XF key fob battery as soon as you can to avoid these problems. Faulty battery contacts Jaguar key fobs have many more features than conventional mechanical keys. They are also more sophisticated. Like any electronic device they are prone to wear out over time or stop working altogether. If the lock button on your Jaguar key fob starts to malfunction, it is likely that the battery will need to be replaced. You can purchase replacement batteries for your Jaguar key fob in most auto parts stores. But before 2009 jaguar xf key fob replace the battery, make sure that the battery you purchase is genuine Jaguar part. This will ensure that it is of the proper size and voltage. Careful handling of the battery is vital, as the moisture from the skin and oil could be transferred to the outer edges, which can reduce battery life and damaging the contacts. A Jaguar key fob can be used as remote control to unlock the doors of your vehicle to activate the alarm and open the sunroof and windows. It can double-lock your car to keep it secure from thieves. The Jaguar key fob is secured by a casing made of metal, making it impossible to break or damage. A malfunctioning receiver module The key fob transmits an audio signal at a low frequency that is detected by a receiver unit in the Jaguar. The receiver module receives the signal from your smart keys and opens the door locks, or deactivates the security system. It also lets you start your car and manage the audio system. If the receiver module is defective it may stop working. The battery that is 12 volts should be removed by disconnecting both terminals. Take a moment to wait. Then reconnect the battery in reverse. Another common reason for Jaguar XF key fob not working is interference from nearby objects or transmitters on the same frequency. Interference may also prevent the Body Control Module (BCM) from understanding the key signals. You can reprogram the key fob to allow it to work again by following instructions in the owner's manual. Faulty electronic chip Jaguar key fobs are equipped with digital, coded transponder chips. The chips read a specific signal from the remote control and send it to the receiver module inside your car. If the receiver module is not functioning properly it will block you from using your key fob to lock or unlock your vehicle. Fortunately, there are a few common causes which you can resolve yourself. First, make sure that the button on the key fob is functioning. If not, it's possible that the button or contact is worn out. It is also essential to replace the battery correctly. Make sure you use a battery that has the same size, voltage and specifications as the original. Also, make sure that the new battery isn't exposed to water or salt. If your Jaguar key fob is broken, it is important to find a reputable locksmith who can fix or replace it. The cost of this service is high, however it is less expensive than buying a new key fob at the dealer. If you have the proper tools, you can accomplish this yourself.