Locking Car but accessories stay powered and battery dead

boostincincy · 10-07-2020, 10:41 PM

Not sure why this started, but now as of the last two days, I lock the car, key fobs are FAR AWAY from car, but it seems the battery is dead in the morning, and I have to jump the car.

I can't lose the car to the dealership yet, but I seemed to have figured out that the interior accessories don't go to 'sleep' like the car normally does when it's locked, and thus that's my theory as to what is draining the battery. But I can't figure out if there's a fix I can do myself without the dealership.

jad03060 · 10-07-2020, 11:05 PM

WHen shutting down, the computer sends messages out the CANBUS to tell them to go to sleep. IF for some reason those messages don't get to one or more modules, they'll effectively stay on, and that can discharge the 12vdc battery.

YOu might try a idrive reset, but other than that, I'm not sure there's much else you can do as it likely would take more diagnostic tools to figure out what's going on.

Few things on the vehicle are actually switched by the switches in the car...those switches send a message to a computer via a small circuit, and the computer directs things to happen.

Pateeke81 · 10-08-2020, 01:08 AM

You could disconnect the positive lead from the battery for a few hours so all computers are forced to off and need a complete new boot when connecting again. Could be a process being stuck or something.

Marty in NY · 10-08-2020, 07:34 AM

Quote:

Originally Posted by boostincincy

Not sure why this started, but now as of the last two days, I lock the car, key fobs are FAR AWAY from car, but it seems the battery is dead in the morning, and I have to jump the car.

I can't lose the car to the dealership yet, but I seemed to have figured out that the interior accessories don't go to 'sleep' like the car normally does when it's locked, and thus that's my theory as to what is draining the battery. But I can't figure out if there's a fix I can do myself without the dealership.

Both jad03060 and Pateeke81 have good ideas as something you can do at home to try and avoid a dealership visit. The easiest and least intrusive is an iDrive reboot and if that doesn't work you can disconnect the battery. If you don't already know, here is how its done and why doing this first is the simplest.

.

X5 45e · 10-08-2020, 08:18 AM

Quote:

Originally Posted by Marty in NY

Quote:

Originally Posted by boostincincy

Not sure why this started, but now as of the last two days, I lock the car, key fobs are FAR AWAY from car, but it seems the battery is dead in the morning, and I have to jump the car.

I can't lose the car to the dealership yet, but I seemed to have figured out that the interior accessories don't go to 'sleep' like the car normally does when it's locked, and thus that's my theory as to what is draining the battery. But I can't figure out if there's a fix I can do myself without the dealership.

Both jad03060 and Pateeke81 have good ideas as something you can do at home to try and avoid a dealership visit. The easiest and least intrusive is an iDrive reboot and if that doesn't work you can disconnect the battery. If you don't already know, here is how its done and why doing this first is the simplest.

.

I think you just posted the potentially most valuable picture in this G05 forum.

I put it in my library just for all future rest advises. And that will be a lot.

Maybe we should even thinking a short name for the procedure.

doctorttt · 10-08-2020, 08:57 AM

Quote:

Originally Posted by boostincincy

Not sure why this started, but now as of the last two days, I lock the car, key fobs are FAR AWAY from car, but it seems the battery is dead in the morning, and I have to jump the car.

I can't lose the car to the dealership yet, but I seemed to have figured out that the interior accessories don't go to 'sleep' like the car normally does when it's locked, and thus that's my theory as to what is draining the battery. But I can't figure out if there's a fix I can do myself without the dealership.

Did you have a dash cam and leave it connected to the 12v? If so, I suggest you to disconnect it every time you shut off the vehicle.

IftiBashir · 10-08-2020, 09:46 AM

Quote:

Originally Posted by doctorttt

Did you have a dash cam and leave it connected to the 12v? If so, I suggest you to disconnect it every time you shut off the vehicle.

Do they take much power though?
I have my Dash Cam hard wired and in 'parking mode' with the vehicle off. My car is only used on weekends (its a second car) and it always starts straight away....

Personally Id try the iDrive reboot first

Marty in NY · 10-08-2020, 11:43 AM

Quote:

Originally Posted by X5 45e

I think you just posted the potentially most valuable picture in this G05 forum.

I put it in my library just for all future rest advises. And that will be a lot.

Maybe we should even thinking a short name for the procedure.

Ha ha ha, well probably the most used piece of info anyway. Whoever thought we'd be talking about rebooting our cars?

I like this one better.. ..

https://www.dropbox.com/home/Public?...ive+Reboot.mp4

jad03060 · 10-08-2020, 12:51 PM

If there's a problem with the 12vdc battery, all sorts of weird things can happen. It could be from an excessive load during shutdown, or it could be a bad battery. Note, even AGM batteries don't like to be deep discharged all that often, but they're much better at it than a conventional wet cell one.

The dealers can perform a test to see what the actual battery load is when the vehicle is supposedly 'off'. Off on modern vehicles is sort of a misnomer...there are a bunch of things that are sitting in low-current standby mode and if locked, the alarm system is on constantly. The vehicle is also 'ready' to accept the fob buttons or in the case of comfort access, having the fob near by enough.

boostincincy · 10-08-2020, 09:26 PM

I tried both 'fixes' today, neither seemed to work sadly.

Disconnected the positive terminal to the battery in the trunk, but the radio still worked, and the car still started (after driving 45 mins to work). then disconnected the positive terminal cable to the right of the battery, and that killed all electronics. Left it like that for 10 mins and reconnected, locked the car and left it. Came out after work in the evening, and saw the BlackVue camera was still recording (normally it shuts off after 5 mins), so that's how I know the electronics are still running.

LexxM3 · 10-09-2020, 12:03 AM

Wild idea: any chance your keycard is sitting on the charge/card reader tray?

zhangyi17 · 10-09-2020, 06:46 AM

Quote:

Originally Posted by boostincincy

I tried both 'fixes' today, neither seemed to work sadly.

Disconnected the positive terminal to the battery in the trunk, but the radio still worked, and the car still started (after driving 45 mins to work). then disconnected the positive terminal cable to the right of the battery, and that killed all electronics. Left it like that for 10 mins and reconnected, locked the car and left it. Came out after work in the evening, and saw the BlackVue camera was still recording (normally it shuts off after 5 mins), so that's how I know the electronics are still running.

This maybe obvious, but did you try remove the positive terminal to the battery in the engine bay? You mentioned battery in the trunk only

mgiannetto · 10-28-2020, 08:18 AM

Have you checked to see if there is a software update available for your vehicle? You know how to look for that right? If so, give it a try - should not hurt.

Paladin1 · 10-28-2020, 08:55 AM

So aside from normal car electronics, a dashcam is running? Possibly a problem there per @doctorttt?

Alan l. · 10-28-2020, 09:17 AM

Looks like the OP has bigger issues that is related. His thread here

https://g05.bimmerpost.com/forums/sh...0#post26834440

SmartSaves · 10-29-2020, 12:49 PM

We can help if you let us know which fuse you used to connect the dashcam (both front and back), this is a common issue. Picture and/or video will be better.

Did the dealer solve your other water leaking problem?

Paladin1 · 10-29-2020, 07:17 PM

Quote:

Originally Posted by Alan l.

Looks like the OP has bigger issues that is related. His thread here

https://g05.bimmerpost.com/forums/sh...0#post26834440

That would certainly explain a dead battery!

10-07-2020, 10:41 PM	#1
boostincincy Enlisted Member 15 Rep 43 Posts Drives: E92, E36 M3 race car, 19' X5 Join Date: Jan 2015 Location: Brooklyn iTrader: (0)	Locking Car but accessories stay powered and battery dead Not sure why this started, but now as of the last two days, I lock the car, key fobs are FAR AWAY from car, but it seems the battery is dead in the morning, and I have to jump the car. I can't lose the car to the dealership yet, but I seemed to have figured out that the interior accessories don't go to 'sleep' like the car normally does when it's locked, and thus that's my theory as to what is draining the battery. But I can't figure out if there's a fix I can do myself without the dealership.
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10-07-2020, 11:05 PM	#2
jad03060 Major General 3153 Rep 6,789 Posts Drives: X5 45e Join Date: Aug 2018 Location: NH iTrader: (0)	WHen shutting down, the computer sends messages out the CANBUS to tell them to go to sleep. IF for some reason those messages don't get to one or more modules, they'll effectively stay on, and that can discharge the 12vdc battery. YOu might try a idrive reset, but other than that, I'm not sure there's much else you can do as it likely would take more diagnostic tools to figure out what's going on. Few things on the vehicle are actually switched by the switches in the car...those switches send a message to a computer via a small circuit, and the computer directs things to happen.
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10-08-2020, 01:08 AM	#3
Pateeke81 Second Lieutenant 87 Rep 250 Posts Drives: Current: 2019 BWM X5 45e Join Date: Jul 2019 Location: Brussels, Belgium iTrader: (0)	You could disconnect the positive lead from the battery for a few hours so all computers are forced to off and need a complete new boot when connecting again. Could be a process being stuck or something.
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10-08-2020, 12:51 PM	#9
jad03060 Major General 3153 Rep 6,789 Posts Drives: X5 45e Join Date: Aug 2018 Location: NH iTrader: (0)	If there's a problem with the 12vdc battery, all sorts of weird things can happen. It could be from an excessive load during shutdown, or it could be a bad battery. Note, even AGM batteries don't like to be deep discharged all that often, but they're much better at it than a conventional wet cell one. The dealers can perform a test to see what the actual battery load is when the vehicle is supposedly 'off'. Off on modern vehicles is sort of a misnomer...there are a bunch of things that are sitting in low-current standby mode and if locked, the alarm system is on constantly. The vehicle is also 'ready' to accept the fob buttons or in the case of comfort access, having the fob near by enough.
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10-08-2020, 09:26 PM	#10
boostincincy Enlisted Member 15 Rep 43 Posts Drives: E92, E36 M3 race car, 19' X5 Join Date: Jan 2015 Location: Brooklyn iTrader: (0)	I tried both 'fixes' today, neither seemed to work sadly. Disconnected the positive terminal to the battery in the trunk, but the radio still worked, and the car still started (after driving 45 mins to work). then disconnected the positive terminal cable to the right of the battery, and that killed all electronics. Left it like that for 10 mins and reconnected, locked the car and left it. Came out after work in the evening, and saw the BlackVue camera was still recording (normally it shuts off after 5 mins), so that's how I know the electronics are still running.
	Appreciate 0 Quote

10-09-2020, 12:03 AM	#11
LexxM3 Colonel 1698 Rep 2,609 Posts Drives: E46M3, G05X5 Join Date: Apr 2019 Location: Waterloo, Canada iTrader: (0) Garage List 2019 X5 [0.00]	Wild idea: any chance your keycard is sitting on the charge/card reader tray? __________________ G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
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10-28-2020, 08:18 AM	#13
mgiannetto Private 35 Rep 80 Posts Drives: 2019 X5 Join Date: Sep 2018 Location: Princeton, NJ iTrader: (0)	Have you checked to see if there is a software update available for your vehicle? You know how to look for that right? If so, give it a try - should not hurt.
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10-28-2020, 08:55 AM	#14
Paladin1 Brigadier General 5527 Rep 4,488 Posts Drives: 2022 iX xDrive50, DGM Join Date: Jun 2019 Location: Midwest iTrader: (0) Garage List 2023 iX xDrive M60 [0.00] 2022 iX xDrive50 [0.00]	So aside from normal car electronics, a dashcam is running? Possibly a problem there per @doctorttt?
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10-28-2020, 09:17 AM	#15
Alan l. Major General 5427 Rep 8,801 Posts Drives: 2020 F95 X5M Competition Join Date: Jun 2009 Location: United States iTrader: (9)	Looks like the OP has bigger issues that is related. His thread here https://g05.bimmerpost.com/forums/sh...0#post26834440 __________________
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10-29-2020, 12:49 PM	#16
SmartSaves X5 Enthusiast 461 Rep 762 Posts Drives: 2021 X5 Join Date: Aug 2020 Location: Neighbourhood of Santa iTrader: (0) Garage List 2021 BMW X5 [10.00]	We can help if you let us know which fuse you used to connect the dashcam (both front and back), this is a common issue. Picture and/or video will be better. Did the dealer solve your other water leaking problem? __________________ 2021 X5, Excellence, M Sport, DHP, DAP, RSE, MW, Merino.
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