Hi,
I have already asked the BMW dealer and they cant tell me what these two plugs/drains are in the bottom of the battery compartment. These are the two places where they come out at the bottom of the car:
20181112_223425.jpg
20181112_223327_2.jpg
Does anybody know?
The one ‘pass-thru’ is for the drain hose for the battery vent.
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Ha, that put me on the right track, the vent is called a Cable Grommet, part nr : 61131357511
http://www.realoem.com/bmw/enUS/show...diagId=61_0158
Apparently it is to vent hydrogen from the battery:
https://www.bimmerforums.com/forum/s...be-(vent-tube)
Im wondering if this is still necessary with newer batteries.
Apparently can get a hose with it too, to connect it to the battery?..: http://www.niparts.com/s_5895CF/61131357511.html
Still would like to know the name of the other one.
there are a lot of holes in the body sealed with plugs, that is to drain the chassis in the paint process https://www.youtube.com/watch?v=JauUjmXlTPE&spfreload=5
https://www.youtube.com/watch?v=O0ScFQ1rbe4
Normally with the battery comes a drain hose, if case you have no drain hose and the battery is cooking, acid will destroy the paint and metal
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