Low battery power save mode
Discussion
Haven’t used my 06 V8 for about 2 months, it’s been M it’s CTEK the whole time, and the CTEK indicates all is well….. however I’ve just tried the ignition (not started it) and got the Low battery warning.
The CTEK was on “recond” mode…. Have I messed up there?
Any advice gratefully received
The CTEK was on “recond” mode…. Have I messed up there?
Any advice gratefully received
Have you actually tried starting it? The “low battery” warning in my Vanquish is pretty misleading. Even when the car is constantly on a CTEK charger, the warning comes up after spending some time playing around with the audio system. It was still showing the next day as well, but when I measured the battery voltage it was perfectly fine.
I think the car triggers the “low battery” warning simply after a certain amount of energy consumption while standing still, regardless of whether the battery is connected to a CTEK charger or not.
I think the car triggers the “low battery” warning simply after a certain amount of energy consumption while standing still, regardless of whether the battery is connected to a CTEK charger or not.
“ Usually “ the recond mode on CTEK’s is for already heavily discharged batteries rather than the usual car symbol mode which is what I usually leave mine in when not been driven.
When I took delivery of my new Dark Horse I plugged in the CTEK and it took a good 48 hours before the lights turned green .
I held out the temptation of pressing the recond mode though.
When I took delivery of my new Dark Horse I plugged in the CTEK and it took a good 48 hours before the lights turned green .
I held out the temptation of pressing the recond mode though.
Swissdriver said:
Have you actually tried starting it? The low battery warning in my Vanquish is pretty misleading. Even when the car is constantly on a CTEK charger, the warning comes up after spending some time playing around with the audio system. It was still showing the next day as well, but when I measured the battery voltage it was perfectly fine.
I think the car triggers the low battery warning simply after a certain amount of energy consumption while standing still, regardless of whether the battery is connected to a CTEK charger or not.
Maybe this is the case then. Haven’t tried starting it (won’t be getting it out for a week or two,) and just turned the key on to check all was well after 10 weeks or so standing. I think the car triggers the low battery warning simply after a certain amount of energy consumption while standing still, regardless of whether the battery is connected to a CTEK charger or not.
I’ve switched the CTEK to just car mode (not recon) and it’s all green lights also. So maybe just one of those Aston quirks!
Although the cars tracker is off, TPMS off, and it’s been unlocked the whole time. Not sure what’s been draining battery.
Just want to ensure enough battery to be able to crank it for oil pressure before starting next week, plus avoid any silly electrical issues
Krhuangbin said:
Although the cars tracker is off, TPMS off, and it s been unlocked the whole time. Not sure what s been draining battery.
It could be several things, but I'd mainly guess it's the security module "listening" for a remote key fob operation. Plus every time you open the door you wake the car up, and it takes 10 minutes or so for it to go back to sleep again.As an update here, Got the car out for the first time over the weekend - CTEK suggested all fully OK, car cranked strongly and started well, everything all good ....... apart from the center stack 
! No radio or Nav working. It did to start with during cold start crank procedure.... then did not work even after a 100mile drive and no further low battery warning.
Is that a sign the battery is on way out (3 years old)?
! No radio or Nav working. It did to start with during cold start crank procedure.... then did not work even after a 100mile drive and no further low battery warning.Is that a sign the battery is on way out (3 years old)?
Krhuangbin said:
As an update here, Got the car out for the first time over the weekend - CTEK suggested all fully OK, car cranked strongly and started well, everything all good ....... apart from the center stack ! No radio or Nav working. It did to start with during cold start crank procedure.... then did not work even after a 100mile drive and no further low battery warning.
Is that a sign the battery is on way out (3 years old)?
Did the centre stack wake up and act normally when you keyed off and then restarted?! No radio or Nav working. It did to start with during cold start crank procedure.... then did not work even after a 100mile drive and no further low battery warning.Is that a sign the battery is on way out (3 years old)?
LTP said:
Krhuangbin said:
As an update here, Got the car out for the first time over the weekend - CTEK suggested all fully OK, car cranked strongly and started well, everything all good ....... apart from the center stack ! No radio or Nav working. It did to start with during cold start crank procedure.... then did not work even after a 100mile drive and no further low battery warning.
Is that a sign the battery is on way out (3 years old)?
Did the centre stack wake up and act normally when you keyed off and then restarted?! No radio or Nav working. It did to start with during cold start crank procedure.... then did not work even after a 100mile drive and no further low battery warning.Is that a sign the battery is on way out (3 years old)?
Krhuangbin said:
Cranked for pressure until the oil light went out to start with, and it woke up fine and nav screen raised. Keyed off and on again to start, and nothing
OK, maybe I didn't make myself clear. Let's see if I understand- You crank for oil pressure and everything works
- You then start the car and the centre stack is dead
- You take the car out for a run and the stack doesn't wake during the journey
- I would expect a 100-mile run to have fully recharged the battery
- When you got back, if you keyed-off, waited 10 minutes (for the electronics to go to sleep) and restarted the car would the centre stack work?
edited to fix the fact I didn't read your post properly
Sorry I wasn’t the clearest 
1. Keyed on, cranked for pressure, and during initial cranking radio and nav came on.
2. I then keyed off (not started yet)
3. Let starter motor cool down for 10 secs, keyed on and started. No radio/nav.
Maybe that was wrong sequence on my part
I expect yes the cranking did draw a lot from battery but as you say, 100mile drive should have sorted that.
1. Keyed on, cranked for pressure, and during initial cranking radio and nav came on.
2. I then keyed off (not started yet)
3. Let starter motor cool down for 10 secs, keyed on and started. No radio/nav.
Maybe that was wrong sequence on my part
I expect yes the cranking did draw a lot from battery but as you say, 100mile drive should have sorted that.
Krhuangbin said:
Sorry I wasn t the clearest
1. Keyed on, cranked for pressure, and during initial cranking radio and nav came on.
2. I then keyed off (not started yet)
3. Let starter motor cool down for 10 secs, keyed on and started. No radio/nav.
Maybe that was wrong sequence on my part
I expect yes the cranking did draw a lot from battery but as you say, 100mile drive should have sorted that.
No, I think the comprehension problem is my end. 1. Keyed on, cranked for pressure, and during initial cranking radio and nav came on.
2. I then keyed off (not started yet)
3. Let starter motor cool down for 10 secs, keyed on and started. No radio/nav.
Maybe that was wrong sequence on my part
I expect yes the cranking did draw a lot from battery but as you say, 100mile drive should have sorted that.
So when you got back from the drive, did you shut it down and then try to restart it to see if the centre stack then woke up normally?
LTP said:
No, I think the comprehension problem is my end.
So when you got back from the drive, did you shut it down and then try to restart it to see if the centre stack then woke up normally?
Yep, several times over the journey and also after, and nothing. Weirdly, the (aftermarket Parrot system) handsfree which works through the stereo system works fine (received a call during the drive.) Everything else all good. Just the radio/NAV/ICE interface will not wake upSo when you got back from the drive, did you shut it down and then try to restart it to see if the centre stack then woke up normally?
LTP said:
So since then the centre stack remains dead? Even after the car has been on your battery conditioner to top up the battery?
Another thought. Have you checked the list of fuses in your Owner's Guide to see if there's one for the nav system?
Yep still dead, CTEK says fully "charged", all lights on.Another thought. Have you checked the list of fuses in your Owner's Guide to see if there's one for the nav system?
Will have a look at manual shortly to see if there is a fuse and investigate
LTP said:
Krhuangbin said:
Yep still dead, CTEK says fully "charged", all lights on.
Will have a look at manual shortly to see if there is a fuse and investigate
There's a few it might be worth checking (I just downloaded an '06 manual to have a look)Will have a look at manual shortly to see if there is a fuse and investigate
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