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How to Replace a Nissan Juke Spare Key Nissan Juke is a fun and stylish hatchback, with an unusual engine setup. It's not the most quiet, but still fun to drive. The battery for the key fob in the Nissan Juke has to be replaced every two years or at the latest, or if it's low. It's easy to do at home, but you'll require some tools. Dead Coin Battery If your Nissan Juke key fob has stopped working, the first thing to be sure of is the battery within it. It may be dead and requires to be replaced. This is a quick fix that will take only a few minutes. Flip the fob upside down so that you'll be able access the tiny latch/release located at the back. Take out the old battery and then insert the new one, ensuring sure that it is facing down on the fob. Line up the two halves of fob in a carefully. If the fob has been exposed to water, it needs to be cleaned prior to putting the new battery in. This can be done by using a paper towel and isopropyl alcohol or electronic cleaner, and let it dry completely prior to re-inserting the battery. To start the car, the key fob must be connected to the car. The KeyLab can be done according to the instructions in your owner's manual or by using an OBDII scan. If the key fob has not been connected, this is the most likely explanation of why it has stopped working. It could also be that the fob has defective chip, however this is rare. In this instance it is possible that a new receiver could be required. If this is the case, it will have to be replaced by a professional technician. Water Damage The key fob is powered by batteries, and the batteries need to be changed every two years or as often, or at the first sign of the car not responding when you hit the “start” button. Keys are fitted with rubber seals to keep water out, but placing the key in the ocean or pool could damage the electronic chip inside. If this is the situation, you will need to obtain a new key from Nissan or an automotive locksmith. It's possible that the computer has lost connection with the key fob This could result from a variety of reasons. A simple restart of the car can fix this, but if the key is still showing the “Key ID” error message, it's best to contact Nissan or an auto locksmith for assistance. The three most common causes of this problem are dead battery on the key fob and keys that are not programmed and a damaged or malfunctioning key fob. The first two issues are fairly easy to fix while the third is more difficult to pinpoint and repair immediately, but can be resolved with patience. Compare Nissan Key Replacement prices in your area with WhoCanFixMyCar and book your repair online. You can read reviews of local Nissan dealerships, Nissan mechanics, and garages in a matter of seconds. Faulty Chip The key fob on your Nissan Juke contains a special chip that sends a message to the vehicle when you turn it. If that chip is faulty, it can cause the key to stop functioning. In this case it is possible to solve the issue by replacing the key. There are many reasons your Nissan Juke's key may be defective, including water damage or a dead coin battery or a damaged receiver module. Examine the chip for water damage in the event that your key fob stopped working after a wash or bath. Make sure that the metal retaining clips are tight and that the chip isn't exposed to any water. If you see any indications of water damage to the electronic component, you should remove the battery and wipe it down with isopropyl alcohol or electronic cleaner. If the chip is not working, you will need to visit your local locksmith or dealership. They will require the year model, make, and year of your vehicle in order to find an appropriate replacement. You will also have note down your VIN (Vehicle ID Number) so the dealer or locksmith will know which key you own. This will allow them to locate the correct key code and confirm that they are cutting the right one. Faulty Receiver Module The key fob transmits a radio frequency signal to your car, enabling it to perform several functions. It can open your trunk as you rush with your groceries to the car or even start your car by pressing a button on the fob. It can even open your windows and switch on the horn if accidentally lock your keys inside the car. If the key fob stops functioning, there could be problems with the receiver module within the vehicle. The receiver modules are tuned so they can receive certain frequencies which correspond to the signals sent by Nissan key fobs. If your car is equipped with an inoperable receiver module it will not respond to any signal from the key fob. It is always recommended to carry a spare Nissan key fob in the event that your original key is lost or breaks. A locksmith or dealership can program an additional key to work with your Nissan. This can help you avoid the hassle of losing your keys or locking them in your car. If your Nissan Juke's key fob has been exposed to rain or clean tap water, you can fix the problem by cleaning it with isopropyl or electronic cleaner. If the chip has fried, you will need to purchase a new keyfob that can be programmed for your vehicle by a locksmith or dealer.