Auxiliary Battery Bmw 330e

330e auxiliary battery vs std 12v battery registration Jump to Latest 25K views 10 replies 8 participants last post by jmkrantz1962 Jan 18, 2023 E. This videos shows how to change a bmw 330e auxiliary battery this battery is located in engine bay on passenger side this battery is responsible for electrics and start stop. please like share and.

2018 F30 BMW 330e Aux Battery Replacement - USA All times are GMT -5. The time now is 06:35 AM. I just bought a 330e 2017.

First thing is to charge up rear trunk primary 12V battery. Found battery is healthy, and almost fully charged. Charger reported it is full in < 3 min.

Next thing is to charge up front AUX battery 12V 40Ah AGM battery. Found battery is healthy, and almost fully charged. Charger reported it is full in < 3 min.

Managed to get ISTA installed, so used it to scan and. The only battery you need to replace for aged aux battery is the one under the hood, the 50amp one. Are you using ISTA to register the battery? You need to go into a different menu to register the aux battery.

And you need to check other faults now afterwards as something seems more off than before you did repairs. Hi, After taking my 2017 330e to my local independent BMW garage because of driver's door window control fault (i.e. it's stopped working) they have suggested replacing the the auxiliary battery.

The crossover between EVand ICE seems fine but maybe it could be smoother. You have the high voltage battery that's part of the EV system, a standard 12V battery in the trunk/boot, and this annoying but necessary auxiliary battery. In the 330e, the auxiliary battery powers the starter.

In the F30, the 12V primary battery and the auxiliary are isolated from the drive battery, so they don't charge when the car is. Unfortunately, that sounds familiar, and you probably do need to replace the auxiliary battery. On my F30 330e, I had a few days of rough switchover from electric drive to internal combustion, then a drivetrain malfunction.

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