Battery short circuit, main fuse?

[notorious]

Hi all!

I was busy installing a new amplifier in my E46 320d Touring (12/2003) and while unmounting the + connection from the battery my wrenching tool accidentally touched the bracket holding the battery in place, resulting in a short-circuit. Everything went 'down' immediately.

I can't find any blown fuse in the fuse box, the battery still holds 12 volts. What am i missing here? Is there a 'main fuse' somewhere?

Any help would be greatly appreciated!

 

[rick540]

Is the battery holding 12V under load? They can fail internally but because they contain conductive acid will still measure 12V with no load.

 

[notorious]

Thx for the quick reply!

Yes it seems to, just hooked up a SUNON 8x8 12v 1.4w fan on it, blows air as it should.

 

[Hellas]

Ok first with the real advice: For any electrical work on your car, ONLY remove the NEGATIVE (-) lead from the battery. That is all that is required.

Have you checked the main under bonnet fuses?

 

[Sankekur]

Ok first with the real advice: For any electrical work on your car, ONLY remove the NEGATIVE (-) lead from the battery. That is all that is required.

+1

 

[notorious]

Ok first with the real advice: For any electrical work on your car, ONLY remove the NEGATIVE (-) lead from the battery. That is all that is required.

Thx 4 advice

Have you checked the main under bonnet fuses?

I found an 250 amp & 80 amp fuse, they seem to be working fine...

Something odd.. When i measure the voltage between the 2 leads on the battery i get a 12v reading, when i measure between the + and the car itself it only reads 3v, tried different places.

A dealer told me to 'reset' the system by: detaching the battery, connecting the +&- cables and let it rest for about an hour, if this fails i'm going to install a new battery.
Hope new battery will fix it, i don't want to order a new CU.

---

Omg, the reset thing worked, everything is working as it should!!!

I'm so happy right now )

Thanks everyone for the help and support!