704hov1095 wrote:[...]12 residual miles[...] As I got up yesterday, the dash charging lights were off and the car would not do anything other than turn on the accessories.
Does "would not do anything
" include "shifter will not go into 'D' or 'R', only 'N' or 'P'
mwalsh wrote:Flame suit on.....but that sort of sounds to me like you left the car turned on. No timer charging would be my first indicator and the completely dead battery pack my second.
704hov1095 wrote:Ahem, the car is back from a day at the dealer. While there is no absolute proof, examination found 3 error codes that led to a "fail safe state" indicating with strong probability that [...]
From the owner's manual, page 3-11:
"12-VOLT BATTERY SAVER SYSTEM
When all the following conditions are met for 60
minutes, the battery saver system will cut off the
power supply to prevent 12-volt battery discharge.
. The power switch is in the ACC position,
. All doors are closed, and
. The vehicle is in the P (Park) position.
If your LEAF was in ACC mode, it would shut down by itself after 60 minutes.
The question is whether your LEAF was in ON mode (e.g. if you just push 'P' and/or engage the parking brake) or in ACC mode; I suspect it was in ON mode, since to enter ACC mode from ON mode you need to push the power button twice (with foot off the brake) and it doesn't sound like you did that?
However, even if it was in ON mode all night and the traction battery was not being charged, would the display draw so much power that it would drain the traction battery's "12 miles remaining" charge (from having to charge the 12V battery all night)? 12 miles should be several kWh's worth of charge, even considering the "guess-o-meter" nature of the "miles remaining" display. Was the A/C or the fan on?
(The traction battery charges the 12V when the 12V battery's voltage is too low. From the service manual, section "EVC" page EVC-45:
"The automatic 12V battery charge control is a control to reduce the frequency of battery discharge by automatically
charging the 12V battery in case the 12V battery voltage is low when the key switch is turned to ON
or the vehicle has been left unattended for a long time.
When VCM [Vehicle Control Module] recognizes a need of automatic charge, VCM controls the DC/DC converter and the system main F
relay and charges the 12V battery using the Li-ion battery power.
Additionally, your "fail safe" diagnostic codes sound vaguely like a symptom of the "won't go into 'D'
" problem. I'm not yet convinced that the issue was simply because of your leaving the car on.