IBS - Intelligent Battery Sensor.
In this video I talk about IBS repair / replacement / fix.
If your car develops battery-related issues, you may want to verify that this device is functioning properly.
My car started to a "low battery" warning - no matter what I tried to do with the battery.
Fully charged, on the charger - didn't matter - the car was still thinking that the battery was low / discharged.
E9X and E8X cars.
E82 has a bit different battery placement.
If you liked this video, you may consider subscribing to my channel: / @maxsam201