designbug wrote:Add me to the list. 2015 Nissan Leaf SV with regular 120V charger that came with the car. "12v battery dead" problem started happening a couple of months ago. We would come home and plug it in to charge, and once in a while, we would find it dead in the morning, having to "jump start" it. This was less frequent in the beginning -- weeks between jump starts, and more frequent more recently -- a few days between jump starts.
During this time we took it to the dealer like 4 times, with no luck. Once they replaced the battery, but they said they can't find the problem. This last time they had the car for 8 days and supposedly tried everything, but it did not happen to them. It happens at home, does not happen at the dealer. Wife is frustrated, I'm frustrated, dealer is supposedly frustrated -- they need to replicate it in order to troubleshoot it. Town Center Nissan north of Atlanta, if anyone cares.
I've started to top off the 12v battery with the jump starter as a poor man's charger. I don't know what else to do, but wait it out until STUPID NISSAN AND DEALERS acknowledge this problem and find a solution. This is terrible. I can't with a clear conscience sell the car either. I'm stuck.
Did you have the telematics unit updated? If so, the telematics unit may be trying to transmit plug in reminder or charge complete notices at home. If it is unsuccessful, it may cause the car to not go into sleep mode after charging is complete. With all of the computers (modules) active, the draw on the 12-volt battery can be enough to drain it (failure to sleep probably also inhibits the automatic charging of the 12-volt battery). Unless the dealer's GPS location is recorded in the navigation system as a charging location to send plug in reminders, the issue may never happen at the dealer. As a test, you could go into the menus on the screen and turn off all notifications to see if your 12-volt battery is still drained at home.