TonyWilliams
Well-known member
DanBaldwin said:Out of curiosity I checked my 2012 SL, and it doesn't run the dc/dc converter in accessory mode, or in on mode, only in ready mode.
Yes, and the dash will show a red battery symbol.
DanBaldwin said:Out of curiosity I checked my 2012 SL, and it doesn't run the dc/dc converter in accessory mode, or in on mode, only in ready mode.
Welcome to the forum, Huminit!Huminit said:I've also had this happen twice to my 2013 sl.
That shouldn't do it. I wouldn't expect an issue unless the car had been left plugged in for 2-4 weeks, not 2 days. There's something wrong.Staque said:I'm guessing, after searching the forum for "12V", that it was the fact that I left it plugged into the EVSE for 2 days.
Any thread where people mention a problem leaving it plugged in, the phrase "for more than a day" is used.
What is the 12V load when the EVSE is plugged in? I must be close to 1A? (I don't have an ammeter.)
DanBaldwin said:Out of curiosity I checked my 2012 SL, and it doesn't run the dc/dc converter in accessory mode, or in on mode, only in ready mode.
davewill said:That shouldn't do it. I wouldn't expect an issue unless the car had been left plugged in for 2-4 weeks, not 2 days. There's something wrong.Staque said:I'm guessing, after searching the forum for "12V", that it was the fact that I left it plugged into the EVSE for 2 days.
Any thread where people mention a problem leaving it plugged in, the phrase "for more than a day" is used.
What is the 12V load when the EVSE is plugged in? I must be close to 1A? (I don't have an ammeter.)
lpickup said:DanBaldwin said:Out of curiosity I checked my 2012 SL, and it doesn't run the dc/dc converter in accessory mode, or in on mode, only in ready mode.
Well now I have to share a story.
I was at a hockey game about a month ago. I had the car in ON mode playing music as we tailgated. I thought I turned it off when we left, but maybe I didn't. My wife left her purse (with a fob in it) in the trunk (BTW, I am not condoning this practice! I'm against it!).
When we came out a couple hours later, I notice the car's headlights and taillights are on (I keep the lights on AUTO so obviously when it got dark while we were inside, the lights came on), the dash is on (I'm pretty sure it was in ON though and not READY), and the third blue dash LED is lit (I'd never seen that one lit before so I looked up in the manual what that meant, and it meant the 12V battery was charging).
I suppose it is possible that my recollection is not good, but I'm pretty sure the car was not in READY, but rather just ON.
lpickup said:I was at a hockey game about a month ago. I had the car in ON mode playing music as we tailgated. I thought I turned it off when we left, but maybe I didn't.
Staque said:I'm guessing, after searching the forum for "12V", that it was the fact that I left it plugged into the EVSE for 2 days.
Any thread where people mention a problem leaving it plugged in, the phrase "for more than a day" is used.
What is the 12V load when the EVSE is plugged in? I must be close to 1A? (I don't have an ammeter.)
sorphin said:lpickup said:DanBaldwin said:Out of curiosity I checked my 2012 SL, and it doesn't run the dc/dc converter in accessory mode, or in on mode, only in ready mode.
...
I suppose it is possible that my recollection is not good, but I'm pretty sure the car was not in READY, but rather just ON.
Being in 'On' does the same thing as being 'in Ready" (it's like being in 'ignition mode' on an ICE, but not starting the engine..) the computer and everything else are still sitting there running... the blue light was on because the DC to DC converter was recharging the 12v battery so it didn't die.
lpickup said:The point is, however, that assuming my LEAF was in ON mode (and not READY), then that would run contrary to DanBaldwin's statement that the DC/DC converter does not run in ON mode.
AND, I'd like to add that had I done that in an ICE I would've needed a jump...as it was though I probably was only down a bar (if even that).
The DC-DC runs anytime the main contactor is closed. This means, Ready mode, Active charging, remote/timer climate mode, or when the automatic 12v battery charge mode is activated. One suggestion I've made is to set a short charge timer once a day that would offset this, but it still then cycles the 12V a lot. The simplest and easiest is to simply disconnect the 12v negative terminal.sorphin said:The DC to DC doesn't run if you're _plugged in_.
"Iirc, the "dark current" with the car plugged in (but not charging the traction pack) was considerably higher than being unplugged, with the added insult that being plugged-in inhibits 12V top-off charging via the DC-DC converter, which otherwise occurs every 5 days. "
The radiator fans will not do this, in addition, if they were somehow running, it would be immediately obvious, as they are noisy.cliff said:My first thought when I read about the battery constantly going down,
was that the the radiator fans might be running. If the fan termperature
sensors are not connected, then the sensor values may float enough to
cause the fans to come on. Just a guess about the float, may not be true.
The usual reason this happens t me is because of clicking the door handle just a tiny bit before hitting the power button. I never had it cause a dead battery, though.Phatcat73 said:Interesting anomaly occurred the other day- I parked, shut off the car, opened the door and heard the door ajar chime. I looked at the dash and the nav screen and they were black, suggesting the car was powered off. ...
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