How To Change Nissan Altima Key Fob Battery. To replace the key fob battery on a 2015 Nissan Altima correctly follow these steps. Pry Out Button Cell Battery.

The first step is to slide the switch on the back of the fob and release the physical car key that is stored inside. Pry Out Old Battery. Without a key actually inserted into the tumblers if the ecu does not see a valid key id it will make it impossible for the vehicle to start so the remote starter is useless.
Two Halves of Key Fob.
The process of starting and operating your Nissan without the key fob may. Push in the new battery and make sure that the positive side is facing up. The only tool needed to replace the coin cell battery in a Nissan Altima smart key fob is a small flathead screwdriver. Then locate the small notch located on the left side of the key fob and insert the small flathead screwdriver.

