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How to Replace a Nissan Juke Spare Key Nissan Juke is an attractive and fun hatchback that has a unique engine configuration. It's a bit noisy, but it's still enjoyable to drive. Replace the battery for the key fob of your Nissan Juke every two years, or when it is low. You can do it yourself, however you'll need tools. Dead Coin Battery If the key fob on your Nissan Juke has stopped working, check the coin battery. It could be dead and needs to be replaced. This is a simple fix that takes only a few minutes. Flip the fob upside down so that you can access the small latch/release in the back. Remove the battery from the old one and then pop in an alternative one, making sure that it's facing downwards on the fob. Line between the two halves of the fob in a careful manner. If the fob was exposed to water, it will need to be cleaned prior placing the new battery into. This can be accomplished by using paper towel and isopropyl alcohol or electronic cleaner, and then allow it to dry completely before inserting the battery. The key fob also needs to be linked to the vehicle to be able to start the car. This can be done by following the instructions in the owners manual or using an OBDII scanner. The most likely reason why the key fob stopped functioning is because it wasn't linked to the car. The KeyLab could also be that the fob has defective chip, however this is a rare occurrence. A new receiver module could be required in this instance. If this is the situation it should be replaced by an expert technician. Water Damage Key fobs are battery-powered, and the batteries need to be changed every two years or more, 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 a pool or ocean water could cause damage to the chip inside. If this happens then you'll need a replacement key from Nissan or locksmith. If the key fob is equipped with an operating chip it's possible that the computer has lost its connection to it, which can be the result of a variety of reasons. A simple restart of the car can fix this, but in the event that the key is displaying the “Key ID” error message, you'll have to contact Nissan or an auto locksmith for assistance. The three most common causes of this issue are dead batteries on key fobs, a non-programmed key, and a damaged or malfunctioning key fob that is damaged or defective. The first two are easy to resolve, and the third is harder to diagnose and repair in the moment, but it can be fixed with some patience. WhoCanFixMyCar allows you to compare Nissan Key Replacement prices in your area and book your repair. It takes just a few minutes, and you can even read customer reviews from local garages, Nissan car mechanics and dealerships before deciding. Faulty Chip The key fob on your Nissan Juke has a special chip that transmits a signal to the car whenever you turn it. The key could stop working because the chip is malfunctioning. In this case it is only possible to fix the problem by replacing the key. There are a variety of reasons your Nissan Juke's key might be defective, such as water damage, a dead coin battery or a malfunctioning receiver module. Check the chip for any water damage in the event that your key fob stopped working after a bath or wash. Check that the retainers are in good shape and the chip isn't exposed to water. If you notice any signs of water damage, you can try removing the battery, then wiping the electronic component with isopropyl alcohol, or electronic cleaner. If the chip is not working If it is damaged, you should visit the local locksmith or dealership. To find a replacement chip, they will need the year, model and year of your vehicle. You'll also need to write down the VIN (Vehicle Identification Number) to ensure that the locksmith or dealer knows exactly which key you have. This will allow them to search for the correct key code and confirm that they cut the correct key. Faulty Receiver Module The key fob transmits the radio frequency signal to your car in order to perform various functions. It can unlock your trunk as you rush to get groceries or start your car by pressing the button on the fob. It can even open your windows and turn on the horn if accidentally lock your keys inside the car. If the key fob isn't able to work, it may be due to a problem in the receiver module. The receiver modules are tuned to receive specific frequencies that correspond with the signals generated by the Nissan key fob. If your car is equipped with an inoperable receiver module is damaged, it will cease to respond to any signal coming from the key fob. Whatever the way your Nissan key fob gets damaged, it's always beneficial to have a spare key in case the key is broken or lost. A locksmith or a dealership can program a spare key to work with your Nissan. This will save you from the hassles 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 resolve the problem by cleaning it with isopropyl, or an electronic cleaner. However, if the chip has become damaged then you'll need purchase a new key fob that can be coded to your car through a locksmith or dealer.