Is your 2009 Nissan Maxima key fob not working as reliably as it used to? It might be time for a battery replacement. Luckily, changing the battery in your key fob is a straightforward task you can easily do yourself. This guide will walk you through the process, ensuring you get your key fob back in top shape quickly.
The battery you’ll need for your 2009 Nissan Maxima key fob is a 3-volt coin cell battery. These batteries are commonly known under several designations, so don’t be confused if you see any of these numbers listed: CR2032, DL2032, or ECR2032. They are all the same size and voltage and will work perfectly in your key fob. You can find these batteries at most stores that sell batteries, including electronics stores, big box retailers like Walmart, and even drugstores.
Replacing the battery is a simple process. First, locate the small release latch on your Nissan Maxima key fob and slide it to remove the mechanical key. Once the key is removed, you’ll see small slots exposed on the fob.
Now, take a small flat-head screwdriver – the type you might use for eyeglasses repair works well – and insert the tip into one of these slots. Gently twist the screwdriver. You should feel the key fob case begin to separate. Carefully pry the two halves of the fob apart.
With the key fob open, you’ll see the battery. Take note of how the old battery is positioned before removing it. Typically, the battery is installed face down, meaning the printed side with the battery information is facing downwards, into the fob. Remove the old battery and install the new CR2032 battery in the same orientation. The blank side of the battery should be facing up once correctly installed.
After inserting the new battery, carefully snap the two halves of the key fob back together until they are securely closed. Reinsert the mechanical key. Your 2009 Nissan Maxima key fob should now be working perfectly with its new battery.
In most cases, replacing the battery will solve key fob issues. However, if you find that both of your key fobs are showing low battery warnings shortly after battery replacement, and the batteries are relatively new, there might be a different issue. It’s possible that there could be a problem with one of the antennas in your Nissan Maxima’s intelligent key system. Diagnosing and fixing this type of issue requires specialized knowledge, so it’s best to consult with a qualified automotive service technician if you suspect an antenna problem.
By following these steps, you can easily replace the battery in your 2009 Nissan Maxima key fob and regain reliable remote access to your vehicle.
