theblueleaf
Member
- Joined
- Dec 17, 2018
- Messages
- 12
About a month ago, I got my 2011 Leaf back from the dealer. The main service they provided was installing a new 24kWh battery, but they also did some service bulletins work too, including disabling the TCU.
Since I got it back, I've been finding the 12v battery dead every few days. The first thing that I did was to: a) disable downloading/sharing and clear saved locations, as recommended (https://www.mynissanleaf.com/viewtopic.php?t=25722#p529077), and b) disconnect the TCU's power cable as recommended (https://www.mynissanleaf.com/viewtopic.php?t=25949#p528909). The battery still drained to empty even after these steps were done (and from a full charge), so I do not believe it is the TCU at fault, making this (as far as I know) not the same problem that others have dealt with).
I do not believe that the 12v battery is at fault (i.e, I think the 12v battery is in good health). Not only is the timing suspicious, but it has recharged three times and my charger has not flagged it as being in bad health AND it's not that old (manufactured in Oct. 2018). I tried using a multimeter to measure the amp pull and remove fuses one at a time, but I was not able to get it to work (when I tried to connect the multimeter in series, it registered 0.00 amps and I did not hear the tell-tale sounds from the car first getting power that I hear when I put the terminal on the post directly). I am a DIY person, but with limited electrical experience, so I was hesitant to mess around too much.
I am hesitant to take it back to the dealer because: a) anecdotal stories from others with 12v battery drains suggests low success rates in dealers fixing the problem, and b) it is basically an 8-hour commitment to get it to the dealer and back because of the distance to the nearest EV Nissan dealer. If I can fix this myself, I'd very much like to do so.
Currently I have cleared charge timers and also pulled the "audio" fuse (which powers the TCU, video screen, etc.) to see if the battery still drains. I'll wait a few days (checking the voltage periodically to monitor for drops) and see if that fixes the problem (and, if so, then try putting the fuse back to see if the charge timer was the problem). But in the meantime, is there anything I could/should do or try?
Since I got it back, I've been finding the 12v battery dead every few days. The first thing that I did was to: a) disable downloading/sharing and clear saved locations, as recommended (https://www.mynissanleaf.com/viewtopic.php?t=25722#p529077), and b) disconnect the TCU's power cable as recommended (https://www.mynissanleaf.com/viewtopic.php?t=25949#p528909). The battery still drained to empty even after these steps were done (and from a full charge), so I do not believe it is the TCU at fault, making this (as far as I know) not the same problem that others have dealt with).
I do not believe that the 12v battery is at fault (i.e, I think the 12v battery is in good health). Not only is the timing suspicious, but it has recharged three times and my charger has not flagged it as being in bad health AND it's not that old (manufactured in Oct. 2018). I tried using a multimeter to measure the amp pull and remove fuses one at a time, but I was not able to get it to work (when I tried to connect the multimeter in series, it registered 0.00 amps and I did not hear the tell-tale sounds from the car first getting power that I hear when I put the terminal on the post directly). I am a DIY person, but with limited electrical experience, so I was hesitant to mess around too much.
I am hesitant to take it back to the dealer because: a) anecdotal stories from others with 12v battery drains suggests low success rates in dealers fixing the problem, and b) it is basically an 8-hour commitment to get it to the dealer and back because of the distance to the nearest EV Nissan dealer. If I can fix this myself, I'd very much like to do so.
Currently I have cleared charge timers and also pulled the "audio" fuse (which powers the TCU, video screen, etc.) to see if the battery still drains. I'll wait a few days (checking the voltage periodically to monitor for drops) and see if that fixes the problem (and, if so, then try putting the fuse back to see if the charge timer was the problem). But in the meantime, is there anything I could/should do or try?