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Ten Myths About Jaguar Key Fob That Aren't Always True
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 comes with security features, such as the ability to "double lock" the vehicle to stop thieves from breaking windows to gain access.

There are a number of reasons that the Jaguar XF keyfob may not function. These include a dead coin battery, signal interference, or a malfunctioning electronic chip.

Dead coin battery

Modern electronic keys offer greater convenience and security than traditional manual keys. They can lock and unlock the vehicle, turn on the lights and even start the motor. They come with additional features that make driving more comfortable. They are susceptible to losing charge over time. If you've noticed the key fob of your Jaguar XF isn't functioning it could be due to a dead coin battery. The good news is that replacing it is a quick and simple 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 a distance. You may also receive a message on your Jaguar InControl (r) touchscreen interface saying "Smart key battery low".

Slide the emergency key blade out to remove the cover of the key fob. Then, pull the emergency key to release the chrome side bits, and then break from the key fob's body. Replace G28 with a new one, making sure that you place it with the positive side facing upward.

Water damage

If your Jaguar XF key fob has survived a bath in soapy water, or it was exposed to salt water, the chip inside could be damaged. This could prevent the key fob from functioning, causing you to need a replacement from your dealer. In this instance, you must take apart your key fob and clean the metal clip that holds it as well as the chip using isopropyl ethanol.

If the remote control still does not work, it could be due to signal interference. This can be caused by nearby transmitters that operate on the same frequency as the remote control for your XF or by other objects such as buildings or trees. If you relocate the remote control should still work.

Your Jaguar is built to monitor itself constantly - from engine performance and emissions to the brakes and lights. This means that if your car begins to run low on battery power, you'll receive warnings. One of these is an increase in the range of your key fob and another warning message that reads "SMART KEY BATTERY LOW." You'll need to replace the Jaguar XF key fob battery as soon as possible to avoid problems.

Faulty battery contacts

Modern Jaguar key fobs are far more sophisticated than mechanical keys of the past, and they provide a wealth of additional functions. As with any electronic device, these can wear out over time or stop working altogether. If the lock button on your Jaguar key fob starts to fail, it's likely that the battery needs to be replaced.

The majority of auto parts stores offer replacement batteries for Jaguar key fobs. But before you replace the battery, make sure that the battery you purchase is a genuine Jaguar part. This will ensure that it is of the right size and voltage. The proper handling of the battery is important, as the moisture from the skin and oil could be transferred to the edges, decreasing battery life and corrosion of the contacts.

A Jaguar key fob can be used as an remote control that allows you to unlock the doors of your car activate the alarm, and open the sunroof as well as windows. It can double lock your vehicle to keep it secure from thieves. The Jaguar key fob is protected by a metal casing, making it difficult to damage or break.

The receiver module is not working properly.

The key fob sends out a radio signal at a low frequency that is picked up by a receiver module inside the Jaguar. This module receives the signal from your smart key, and then opens the door locks, or disables the security system. This module also allows you to start your car and control the audio system. The receiver module may stop working if it is faulty. To resolve the issue take the 12 volt battery by disconnecting it from both terminals and waiting for several minutes. Reconnect the battery in reverse.

Another common cause of Jaguar XF key fob not functioning is interference from other objects or transmitters on the same frequency. Interference may also prevent the Body Control Module (BCM) from being able to recognize the key signals. You can reprogram the key fob to allow it to work once more by following the steps in the owner’s manual.

A malfunctioning electronic chip

Jaguar key fobs are fitted with electronic, coded transponder chips. These chips receive a distinct remote control signal, and send it to your car's receiver module. If the receiver module is faulty, it will prevent you from using your key fob to lock and unlock your car. There are a few common reasons that you can fix yourself.

First, verify that the key fob's button working properly. If not, it's possible that the button or contact is worn out. It is important to replace the batteries correctly. Use a battery with the same voltage, size and specification as your original. Make sure the new battery doesn't come into contact with water or salt.

If your Jaguar key fob is damaged it is vital to find a skilled locksmith who can fix or replace it. This kind of service may be costly, but it's far less expensive than purchasing a replacement key fob from the dealer. You can even complete this task yourself if you have the proper equipment.