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Solved ✔ BMW F20 Fuses question
15-09-2019, 07:26 AM, (This post was last modified: 17-09-2019, 23:18 PM by Clusters.)
Post: #1
BMW F20 Fuses question
Hello friends,
Can you please tell me, what is that fuse for(check photo)?
On the fuses diagram, there is no info about that fuse.
Thank you!
   
   
15-09-2019, 08:48 AM,
Post: #2
RE: BMW F20 Fuses question
Is there anything behind it? Could just be a spare/blank. There’s no number for it on the card and ISTA doesn’t list it.

I don't know much, but if I've helped you're welcome.
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15-09-2019, 09:06 AM,
Post: #3
RE: BMW F20 Fuses question
(15-09-2019, 08:48 AM)DayvG Wrote:  Is there anything behind it? Could just be a spare/blank. There’s no number for it on the card and ISTA doesn’t list it.

Yes, it is. I have checked all the fuses for smne DC/DC converter problems, and that one was damaged. I have replaced with a new one.
15-09-2019, 09:22 AM,
Post: #4
RE: BMW F20 Fuses question
So it is a spare?

I don't know much, but if I've helped you're welcome.
MGU Virgin/Component Protection Removal/Full Retrofit FSC
clapping BMW ISPI Admin Client License (Contact for info)
cheers Complete EntryNav2 FSC solution for Retrofit/Component Protection
enjoyKAFAS2 7E/BE/BF KAFAS4 11F/13E/13F
biggrin Carplay activations/FullScreen/ID4-5
rock EntryNav2 Carplay activations OEM/Provisioning
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15-09-2019, 09:58 AM,
Post: #5
RE: BMW F20 Fuses question
(15-09-2019, 09:22 AM)DayvG Wrote:  So it is a spare?

I don't know what it is. After a shortcircuit at engine compartiment, the car wouldn't start anymore. So, I went and check every fuse of the car, to find out why the car doesn't start. The problem was obviously(check the photo). But, when I checked the fuses, i have also found that fuse damaged. So, I have replaced the main battery cable and the fuse and started the car. All was fine, but on ISTA/D shows a DC/DC converter error. I have bought a new DC/DC converter and replace it. The error was still there. I have removed that fuse, and the error was gone. All ok. So, what the hell is that fuse? I don`t know if the fuse was blown before or during the engine compartiment shortcircuit.


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15-09-2019, 10:11 AM,
Post: #6
RE: BMW F20 Fuses question
Does the car have something aftermarket fitted? Like an alarm or whatever? It could be for that.
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15-09-2019, 10:28 AM,
Post: #7
RE: BMW F20 Fuses question
No, the car is stock. No aftermarket equipment installed. I'm thinking that maybe the previous owner of the car replaced a fuse, and kept the old one in that place, thinking that place is for spare fuses. I couldn't find anything about that fuse on ISTA or elsewhere, that's why this is so confusing.
15-09-2019, 12:00 PM,
Post: #8
RE: BMW F20 Fuses question
Does that place have metal contacts in it at all? Places for spares do not.
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15-09-2019, 12:55 PM,
Post: #9
RE: BMW F20 Fuses question
(15-09-2019, 12:00 PM)Node Wrote:  Does that place have metal contacts in it at all? Places for spares do not.

Yes it does. If i insert a fuse in that location, it makes a little spark like there is current in it. ISTA/D shows no errors with the fuse unplugged.
15-09-2019, 13:16 PM,
Post: #10
RE: BMW F20 Fuses question
Then its definitely in use for something. Can you provide VIN of that car?
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