[Cisco335i]

Good evening everyone. Owner of a 2008 BMW 335i E90. Having some electrical issues but this post is really only about fuses. I know there's hundreds if not thousands of threads about fuses.....

haven't found many that can tell me if you put a fuse in EVERY SINGLE(example) DSC fuse slot or CAS slot, OBD2 slot, Footwell Module, etc etc etc. what Happens if you do? I have the Bentley Manual and its way better then the little card behind the glove compartment but that's very vague. I'll post the diagram that belong my year's set up from the Bentley manual and another one I found online that shows which slots should have fuses. I'd love your guys opinions. I'll also post the options my car has.

[Cisco335i]

Just Incase I'm not being clear enough, there's about 3-4 different slots for certain things like the DSC module. Does everyone of them get the fuse it corresponds? Is there for lack of a better word, a general rule/rule of thumb??

[ctuna]

If your car was working and now its not
Logically the fuses didn't walk away in the middle of the night.
It comes setup with the fuses it needs.
There not all filled. It someone worked on it and started swapping
stuff around that's another story.


electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

[Cisco335i]

Car was the victim of a "Bmw tech" whom was full of s***". He was replacing my water pump and when I picked it up, it ran fine for a week and then every problem that could happen happened..... I had him come look at the car and that's when he took all the fuses, some trim pieces, took my index 12 injectors and put some old index 6's. Took my ngk plugs, coils, filters.... I ended up having to replace everything above and then some but the fuses have always been something that I'm not completely sure about.

[ctuna]

Usually things like the trailer hitch fuse light will be missing,
radar cruise control . etc etc.
If DSC is missing some hot rodder may have seen it as a way
to permanently turn off DSC so he could drift it.

Look at the empty slots and look them up do a search in the manual
(if you have it online or in pdf format)
for the missing fuse. see what it does.

[Cisco335i]

Originally Posted by ctuna

Usually things like the trailer hitch fuse light will be missing,
radar cruise control . etc etc.
If DSC is missing some hot rodder may have seen it as a way
to permanently turn off DSC so he could drift it.

Look at the empty slots and look them up do a search in the manual
(if you have it online or in pdf format)
for the missing fuse. see what it does.

Ohhhhhhh! So the DSC should have all the fuses in. If that's what the manual says