How to replace the 12V battery on a BMW i3

On the beautiful day of February, 2020 everything seem was great until the BMW i3 did not want to start when I tried to go home. This was after only 3 months of ownership and I was worried I bought a lemon. The main dash LCD screen showed Drivetrain Malfunction screen and then it died all together. I originally thought it was the drive train battery malfunction and that the main battery had died, however it was actually just the 12 V battery that needed a replacement. In this video we document step by step of the entire process of changing out the OEM BMW 12 Volt (AGM) battery to a new Remy AUX18xl on the BMW i3. We also do some programing on the Foxwell Nt510 Elite.

0:00 Intro
3:32 2014 BMW i3 Main Battery(high voltage) disconnect
4:00 Removing the old 12 Volt battery
5:36 Original BMW i3 Battery AGM 12V 20Ah 300A (EN)
5:50 Removing the OEM 12 Volt Batty terminals on BMW i3
6:45 Unpacking the new 12V AGM Battery for BMW i3
7:29 Fixing original terminals on the new 12V Battery
8:24 Re-installing the battery vent
8:35 Putting in the new 12V Battery into BMW i3
9:07 Reconnect the cables to the 12V Battery terminals
10:18 Testing out the new 12 V battery and AUX
10:52 Reattaching the 12V battery bracket on the BMW i3
11:08 Reconnect the main drivetrain battery on the BMW i3
11:48 Drivetrain malfunction sign on the LCD
12:09 Reattaching the door handle for the manual key
13:14 New 12V battery programing with Foxwell Nt510 Elite
16:15 Conclusion and final thoughts


FOXWELL Professional Full-System Reset Tool for BMW Automotive OBD2
https://www.amazon.com/gp/product/B07...

Veepeak OBDCheck BLE OBD2 Bluetooth Scanner Auto OBD II Diagnostic Scan Tool for iOS & Android
https://www.amazon.com/gp/product/B07...

BimmerCode for BMW on IOS
https://apps.apple.com/us/app/bimmerc...

Remy 12 Volt AGM Battery AUX18xl Deka
https://www.remybattery.com/start-sto...

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