The Most Common Jaguar Key Fob Mistake Every Beginner Makes 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 such as the ability to "double lock" your vehicle, preventing thieves from breaking windows to gain access.

There are many reasons for why your Jaguar XF key fob might not work. A few of them are a dead battery, signal interference, and an incompatible chip.

Dead coin battery

Modern electronic key fobs offer more convenience and security than traditional keys. They can lock and unlock the vehicle, turn on lights and even start the motor. They also have added features to make driving easier. They are prone to losing their charge with time. If your Jaguar XF key fob has stopped working, it may be because the battery is dead. The good news is that replacing it is a simple and easy fix.

Crofton drivers can tell it's time to replace their battery when their key fob stops working or is less effective in locking and unlocking from a distance. You may also see an email on your Jaguar InControl (r) touchscreen interface saying "Smart key battery low".

Slide the blade for the emergency key out to remove the cover of the key fob. Pull the emergency key to eliminate any chrome bits that are on the side and then separate the two halves of the key fob. Replace the battery that was used with a new one, making sure to put it with the positive side facing upwards.

Water damage

If your Jaguar XF key fob has survived a bath in soapy water, or it was exposed to salt water, the electronic chip inside may be damaged. The key fob may not work, and you'll need to buy a replacement from your dealer. In this case it is recommended to disassemble the key fob and clean the metal retaining clips and the electronic chip using isopropyl alcohol.

Signal interference could be the reason of a remote that doesn't function. It could be due to nearby transmitters operating on the exact frequency as your XF's remote control, or it may be caused by objects like trees or buildings. The remote control will continue to function if you remove yourself from the source of interference.

jaguar smart key is designed to constantly monitor itself from engine performance and emissions to the lights and brakes. This means that if your car begins to lose battery power, it will send warnings. One of these is a decrease in the range of your key fob. The another one will be a message that reads "SMART Key Battery Low." It is recommended to replace the Jaguar XF key fob battery as soon as possible to avoid these problems.

Contacts to the battery are not working properly.

Modern Jaguar key fobs are more sophisticated than mechanical keys of the past, and they provide a wealth of additional functionality. Like all electronic devices, these can wear out over time or stop working altogether. The battery might need to be replaced when the lock button on the Jaguar key fob begins to fail.

You can purchase replacement batteries for your Jaguar key fob at most auto parts stores. Before replacing the battery ensure that it is an original Jaguar part. This will ensure that it is of the proper size and voltage. Being careful when handling the battery is essential, since skin moisture and oil can be transferred to the edges, reducing battery life and corrosion of the contacts.


A Jaguar key fob can be used as a remote control to unlock the doors of your car to activate the alarm and open the sunroof as well as windows. It can even double-lock the vehicle, ensuring it is safe from thieves. The Jaguar key fob is protected by a metal casing making it impossible to damage or break.

The receiver module is not working properly.

The key fob works by transmitting a low-frequency radio signal which is detected by the receiver module within your Jaguar. The module receives the signal from your smart-key and then activates or deactivates your security systems. The module also lets you to start your car and control the audio system. If the receiver module fails it may stop working. To fix the issue you must drain the 12 volt battery by disconnecting it from both terminals while waiting for about a couple of minutes. Reconnect the battery in reverse.

Another reason for Jaguar XF key fob not working is interference from surrounding objects or transmitters on the same frequency. Interference can also hinder the Body Control Module (BCM) from acknowledging the key signals. The key fob can be reprogrammed to function again by following the instructions in the owner's manual.

Faulty electronic chip

Jaguar key fobs come with electronic, coded transponder chips. They receive a unique remote control signal and send it to the receiver module. If the receiver module malfunctions it will block you from using your key fob to lock or unlock your car. There are a few typical reasons that you can fix yourself.

Make sure the button on the key fob works. If it is not, you may have worn out the button or contact. It is crucial to replace the batteries correctly. Be sure to use an alternative battery that has the same voltage, size and specifications as the original one. Make sure the new battery does not come into contact with water or salt.

If your Jaguar key fob has a problem it is essential to find a reputable locksmith who can repair or replace it. The service is costly but is much less costly than buying the new key fob from the dealer. If you have the proper tools, you can complete this yourself.