03-29-2023, 08:35 PM | #1 |
Lieutenant Colonel
1105
Rep 1,607
Posts
Drives: 2020 M8 Comp First Edition
Join Date: Nov 2012
Location: Georgetown TX
|
m8 battery
Can someone provide correct parts number for 2020 M8 comp battery please. Also does it have to be Lithium or AGM is a possibility as well. Also when changing battery can it be coded via protool on android or no coding needed?
__________________
GT
2020 BMW M8 Comp First Edition 2019 Panamera Turbo 2021 BMW X6M Comp 2019 BMW M5 2018 Maserati Ghibli SQ4 GranSport |
03-29-2023, 08:40 PM | #2 |
Lieutenant Colonel
1105
Rep 1,607
Posts
Drives: 2020 M8 Comp First Edition
Join Date: Nov 2012
Location: Georgetown TX
|
Only reason I possibly need a battery is due to this code whenever I brake boost or launch. BMW won’t touch the battery as I have a amplifier connected to it even though it’s a JL HD750/1 and they normally don’t draw a lot of power.
__________________
GT
2020 BMW M8 Comp First Edition 2019 Panamera Turbo 2021 BMW X6M Comp 2019 BMW M5 2018 Maserati Ghibli SQ4 GranSport |
Appreciate
0
|
03-30-2023, 08:17 AM | #3 |
Brigadier General
1591
Rep 4,553
Posts |
That JL amp can draw upwards of 40A. Have you tried disconnecting the amp for a few days to see if the fault code remains or clears?
Btw, I'm pretty sure your M8 has a LiOn 70Ah 12V battery. BMW part 61-21-8-092-860. Confirm this with your parts department. It's an expensive battery, likely over $1200 just for the battery itself.
__________________
2023 840GC | 2021 740i | 2019 X3
|
Appreciate
0
|
03-30-2023, 09:07 AM | #4 |
Brigadier General
4567
Rep 3,531
Posts |
I agree with claykin try to isolate the issue.
Also agree its LiOn, but you can put AGM in if you want just have to code it. I have a BMW tool now that allows for this via OBD2 port. Not sure about the phone. Also I did not know this before but BMW allows you to program the exact battery going into the car, so say you are OEM 90amp and you install a 95 or 85 you can actually just program it the car will safely adjust for that... Kinda cool and did not know.
__________________
2022 M8 Comp Convertible
2023 718 Cayman GTS 4.0 2019 718 Cayman Base 2015 M235 Manual On the list for the M2 CS |
Appreciate
0
|
04-01-2023, 12:08 PM | #5 |
Lieutenant Colonel
1105
Rep 1,607
Posts
Drives: 2020 M8 Comp First Edition
Join Date: Nov 2012
Location: Georgetown TX
|
Thx guys
__________________
GT
2020 BMW M8 Comp First Edition 2019 Panamera Turbo 2021 BMW X6M Comp 2019 BMW M5 2018 Maserati Ghibli SQ4 GranSport |
Appreciate
0
|
04-03-2023, 06:58 PM | #6 |
Major General
4492
Rep 7,534
Posts |
Connecting things directly to the battery can be the cause of the Check Control warnings.
When you connect directly to the battery, the IBS (intelligent battery sensor) is kept out of the loop…so it has no way of knowing that an unknown draw on the battery is occurring.
__________________
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
1
m3_08609.00 |
Post Reply |
Bookmarks |
|
|