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My 2016 Murano keyfob showed low battery after 2 years and was replaced. Two months later the same low battery message came up and my car was at the dealership for servicing so the tech offered to change the battery. He felt maybe I had gotten a faulty battery. Now 3 months later I am getting the low battery message again. So my battery has been replaced twice in 5 months and now it says it needs rep,acing again. Anyone having this problem and have found a solution? Most people say their battery lasts 3 years at least in other makesand models of vehicles. I am still under warranty but I know Nissan will give me a fit about replacing my keyfob.
The intelligent keys use a lot of power. Why? Because it's always transmitting a frequency. When you press the handle button, the car looks for the specific low frequency and if it finds a match, it opens the door. Again, when you start the car, the car looks for the same. This means that the FOB is always on, thus you have a lot of battery drain. Basically it's active RFID.
Add to this the use of the buttons, remote start, etc.. and you don't have as much time as a non active RFID system before the battery falls over dead.
I just got a low battery on my spare key. I just took it back to the place where I bought my car from and asked them to replace it. After reading this post it sounds like you can simply replace the battery by yourself.
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