BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   7Post - 7 Series Forum > BMW 7-Series Forums > (F01) 7-series General Discussions

Post Reply
 
Thread Tools Search this Thread
      12-09-2022, 12:24 PM   #1
Lomayne
Registered
1
Rep
3
Posts

Drives: BMW 750li
Join Date: Dec 2022
Location: Arizona

iTrader: (0)

Garage List
2014 BMW 750li  [0.00]
Battery charger: fault in separator / wiring harness

Hello, I started receiving power steering errors so checked the battery in the trunk and that was low. Replaced the battery and still having the EPS issues. These are the codes pulled. I have an f02 with rear wheel drive. I am at my wits end. Has anyone had this issue and had it resolved?

1 Motor electronics
218301: Battery charger: fault in separator / wiring harness

30 Electric steering lock
2 errors
4823F1: On-board power supply - failure of on-board network expansion - operation at 12V
level
4823F2: On-board power supply system - additional battery deeply discharged
Appreciate 0
      12-16-2022, 07:09 AM   #2
Qsilver7
Major General
Qsilver7's Avatar
United_States
4343
Rep
7,361
Posts

Drives: F06 650ix GC / F15 X5 50i
Join Date: Oct 2016
Location: Indiana, USA

iTrader: (0)

Wait…you stated you were having EPS issues…and you replaced “a” battery that was showing low state of charge.

But you didn’t tell us WHICH battery you replaced. I believe a 7 series with EPS has a main battery and an auxiliary battery…with the aux battery being the one that powers the EPS system.

You have posted a code that your “additional” battery (this is the aux battery) is deeply discharged…so can you reveal which battery you replaced..the main (big) battery or the smaller (aux) battery?

Depending on model and/or options…the aux battery can be in the trunk or in the engine bay. See attachments below for info about the aux battery & possible location…plus the systems the aux battery controls:
Attached Images
    
__________________
2015 F06 650ix Gran Coupe`(Moonstone/Cohiba Brown)| 2014 F15 X5 50i MSport (Space Gray/Mocha)

Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

Last edited by Qsilver7; 12-16-2022 at 07:26 AM..
Appreciate 0
      12-16-2022, 10:44 AM   #3
Lomayne
Registered
1
Rep
3
Posts

Drives: BMW 750li
Join Date: Dec 2022
Location: Arizona

iTrader: (0)

Garage List
2014 BMW 750li  [0.00]
Hello, thank you for the response. My aux battery was not where it usually is. I decided to pull the side panel in my trunk that covers the fuses, etc., to check fuses and connections, and I found the auxiliary battery. Finally, my power steering issue is resolved.
Attached Images
 
Appreciate 0
      12-17-2022, 11:14 AM   #4
Qsilver7
Major General
Qsilver7's Avatar
United_States
4343
Rep
7,361
Posts

Drives: F06 650ix GC / F15 X5 50i
Join Date: Oct 2016
Location: Indiana, USA

iTrader: (0)

Great! Glad you found your aux battery location and that it resolved your issue. Thanks for posting back that your problem was resolved…and updating us with pics of where you found your aux battery.
__________________
2015 F06 650ix Gran Coupe`(Moonstone/Cohiba Brown)| 2014 F15 X5 50i MSport (Space Gray/Mocha)

Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:11 PM.




7post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST