Battery discharging while stopped....

txfour · 12-28-2018, 02:50 PM

Getting this message on my sons N47.

Says "electrical devices were temporarily switched off".

He had battery trouble and it finally died. Went and had a new battery put in and registered.

Still getting this message.

Voltmeter shows 12.3V after sitting for 24 hours. Shows 13.4 while idling.

In Texas so it isn't too cold. No phone chargers or anything left plugged into any charge ports. Car is locked as soon as he exits which should put ECM to sleep.

HighlandPete · 12-28-2018, 03:00 PM

Quote:

Originally Posted by txfour

Getting this message on my sons N47.

Says "electrical devices were temporarily switched off".

He had battery trouble and it finally died. Went and had a new battery put in and registered.

Still getting this message.

Voltmeter shows 12.3V after sitting for 24 hours. Shows 13.4 while idling.

In Texas so it isn't too cold. No phone chargers or anything left plugged into any charge ports. Car is locked as soon as he exits which should put ECM to sleep.

You need to identify the cause of the drain. Could be Comfort Assess, (if fitted), seems to be a common reason for battery drain. Any unusual clicking from it when locking or unlocking?

txfour · 12-28-2018, 03:29 PM

Quote:

Originally Posted by HighlandPete

You need to identify the cause of the drain. Could be Comfort Assess, (if fitted), seems to be a common reason for battery drain. Any unusual clicking from it when locking or unlocking?

Comfort asses??

HighlandPete · 12-28-2018, 03:37 PM

Quote:

Originally Posted by txfour

Comfort asses??

Ooops, Comfort Access. Keyless Entry.

txfour · 12-28-2018, 03:39 PM

Quote:

Originally Posted by HighlandPete

Ooops, Comfort Access. Keyless Entry.

Yes, it does have keyless entry.

HighlandPete · 12-28-2018, 03:49 PM

Quote:

Originally Posted by txfour

Yes, it does have keyless entry.

Door handles are known to cause a drain if they get a fault. I've had two handle failures on my own F11, one drained the battery and threw the warnings you are seeing.

txfour · 12-28-2018, 04:00 PM

Quote:

Originally Posted by HighlandPete

Door handles are known to cause a drain if they get a fault. I've had two handle failures on my own F11, one drained the battery and threw the warnings you are seeing.

So, how do you correct this issue?

I do have a bluetooth Carly

FastF30 · 12-29-2018, 10:06 AM

If I don't drive my car for more than a week I have to use the key fob to open instead of the comfort access... then I get the discharge notice... car still starts fine and battery is still holding charge...

vooonoo · 12-29-2018, 02:47 PM

Quote:

Originally Posted by txfour

Quote:

Originally Posted by HighlandPete

You need to identify the cause of the drain. Could be Comfort Assess, (if fitted), seems to be a common reason for battery drain. Any unusual clicking from it when locking or unlocking?

Comfort asses??

It's when you have the comfy drivers seat so your ass is comfortable

Elvisfan · 12-29-2018, 04:46 PM

Quote:

Originally Posted by FastF30

If I don't drive my car for more than a week I have to use the key fob to open instead of the comfort access... then I get the discharge notice... car still starts fine and battery is still holding charge...

How close do you have the key FOB? If it’s too close,that could be what’s causing some of the drain.

Orion4 · 12-30-2018, 12:19 PM

Normally, I see about 14.5 VDC at battery when the car is idling. Wonder if you alternator is not putting out the correct voltage any longer?

BEAR-AvHistory · 12-30-2018, 06:39 PM

Agree, would expect a higher charge rate. Was the registration done correctly, its what sets the initial charge rate? If you have Carly you can check & re-register it yourself.

Also if the system is shutting something down you need to find out what it is. Most likely the source of the drain if there is one. It might be shutting something down that is normally active because the battery is not being sufficiently charged.

We have devices on the BMW that go to sleep with the lock but many are still drawing amps to keep their memory settings alive.

FWIW my Cobra has been inactive for 3 months due to a house renovation dumpster blocking it in the garage.

Car fired up on the first key turn without any outside battery support like a trickle charge etc. It has a ECU & entertainment system that stays hot, to preserve their memories, when the car is shut off. Its a low amp draw but still a draw.

Wires · 12-31-2018, 11:58 AM

If you are seeing 12.3V after 24 hours, I wouldn't suspect a battery drain issue.

What if you disconnect the battery for 5 minutes, and re-connect?

BEAR-AvHistory · 12-31-2018, 11:40 PM

A fully charged 12V battery should read around 13.2 volts straight off the charger & about 12.7 after 24 hours. At 12 volts its dead.

Cells in modern batteries are rated at 2.2 volts each, a 12 volt battery has 6 cells.

chiefneil · 01-01-2019, 11:00 AM

Quote:

Originally Posted by FastF30

If I don't drive my car for more than a week I have to use the key fob to open instead of the comfort access... then I get the discharge notice... car still starts fine and battery is still holding charge...

I’ve never seen this on my 335i after it sits for a week, although I tend to use the fob more than comfort access to open the doors. Our X5 3.5i with the same N55 engine routinely sits for 2-3 weeks in the garage with no issues at all on startup, although it doesn’t have comfort access.

chhappy7 · 01-01-2019, 12:04 PM

Anything hardwired like a dash cam?

FastF30 · 01-02-2019, 03:24 PM

Quote:

Originally Posted by chiefneil

I’ve never seen this on my 335i after it sits for a week, although I tend to use the fob more than comfort access to open the doors. Our X5 3.5i with the same N55 engine routinely sits for 2-3 weeks in the garage with no issues at all on startup, although it doesn’t have comfort access.

When I flashed my car I had the charger on it and it was at 70% and only had this instance happen a few times since I usually don't let it sit for a whole week... I had to flash my car again and left the charger on it till it hit 80% charged and haven't had the problem since I wrote this the first time... granted today was the first big test since I haven't drove it for 7days now and just checked and all is good so far... (been skiing for the Holidays

) ... I've had it to the dealer and they also charged it but was still having problems... they said wasn't due for any warranty work so they wouldn't replace it... but if it happens again i'll buy a new one ... the hard part is driving the car for a distance at a reasonable speed and time allowing it to charge properly... everywhere I go is only a mile a way... When I goto my work (once maybe a week) I drive literally one mile from garage to parking spot... I take the long horseshoe freeway tour on the way back if it's before 2:00 and do a quick run... anytime after that and it's all bumper too bumper... I'll keep an eye on it...

brh189 · 01-02-2019, 03:41 PM

Quote:

Originally Posted by txfour

Getting this message on my sons N47.

Says "electrical devices were temporarily switched off".

He had battery trouble and it finally died. Went and had a new battery put in and registered.

Still getting this message.

Voltmeter shows 12.3V after sitting for 24 hours. Shows 13.4 while idling.

In Texas so it isn't too cold. No phone chargers or anything left plugged into any charge ports. Car is locked as soon as he exits which should put ECM to sleep.

my buddy had the same issue he replaced the battery and alternator. it's running like a champ now

12-28-2018, 02:50 PM	#1
txfour New Member 7 Rep 20 Posts Drives: 2014 328D Join Date: Aug 2018 Location: Texas iTrader: (0)	Battery discharging while stopped.... Getting this message on my sons N47. Says "electrical devices were temporarily switched off". He had battery trouble and it finally died. Went and had a new battery put in and registered. Still getting this message. Voltmeter shows 12.3V after sitting for 24 hours. Shows 13.4 while idling. In Texas so it isn't too cold. No phone chargers or anything left plugged into any charge ports. Car is locked as soon as he exits which should put ECM to sleep.
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12-29-2018, 10:06 AM	#8
FastF30 Lieutenant Colonel 521 Rep 1,288 Posts Drives: 2015 335i xdrive Msport Mbrake Join Date: Dec 2017 Location: Middle of the Road iTrader: (0) Garage List 2015 BMW 335i Xdrive [0.00]	If I don't drive my car for more than a week I have to use the key fob to open instead of the comfort access... then I get the discharge notice... car still starts fine and battery is still holding charge...
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12-30-2018, 12:19 PM	#11
Orion4 Lieutenant Colonel 481 Rep 1,572 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	Normally, I see about 14.5 VDC at battery when the car is idling. Wonder if you alternator is not putting out the correct voltage any longer?
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12-30-2018, 06:39 PM	#12
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3129 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	Agree, would expect a higher charge rate. Was the registration done correctly, its what sets the initial charge rate? If you have Carly you can check & re-register it yourself. Also if the system is shutting something down you need to find out what it is. Most likely the source of the drain if there is one. It might be shutting something down that is normally active because the battery is not being sufficiently charged. We have devices on the BMW that go to sleep with the lock but many are still drawing amps to keep their memory settings alive. FWIW my Cobra has been inactive for 3 months due to a house renovation dumpster blocking it in the garage. Car fired up on the first key turn without any outside battery support like a trickle charge etc. It has a ECU & entertainment system that stays hot, to preserve their memories, when the car is shut off. Its a low amp draw but still a draw. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT Last edited by BEAR-AvHistory; 12-30-2018 at 06:55 PM..
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12-31-2018, 11:58 AM	#13
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	If you are seeing 12.3V after 24 hours, I wouldn't suspect a battery drain issue. What if you disconnect the battery for 5 minutes, and re-connect?
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12-31-2018, 11:40 PM	#14
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3129 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	A fully charged 12V battery should read around 13.2 volts straight off the charger & about 12.7 after 24 hours. At 12 volts its dead. Cells in modern batteries are rated at 2.2 volts each, a 12 volt battery has 6 cells. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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01-01-2019, 12:04 PM	#16
chhappy7 Major 519 Rep 1,173 Posts Drives: TBD Join Date: Mar 2018 Location: Hanover, NH iTrader: (0)	Anything hardwired like a dash cam? __________________ 2020 X3 M40i 2015 328i - Sold @ 104,000 miles
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