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535i fusible link from Gordon.
If the fusible link is ok, check the second
fuse box under the rear seat and check the fuse that might
be corroded (no. 37, 30 amp) which handles all of the central
locking and the electric windows and sunroof. Thanks
to Raj K.
Note From Ron W. on his 535i:
there are TWO fusible links. an 80amp which is in a nice plastic
enclosure held by bolts as shown on your site. the one i am
talking about is near this one , but it is hidden very well
under the heatshrink. this one is rated for 50amps and is
part of the cable itself. there is no replaceable link like
the 80amp one. i had to drill out the rivets to remove the
old one. thisleft me with two opposing ring terminals that
i put my fuse in between. this was very difficult to do because
of how short the cable was comming through the back seat.
The two links are shown on the bentley wiring diagrams, the
problem is that it doesnt mention the location of the 50amp
link. i called a friend from bmw and he said it was near the
battery on his diagrams. i found it by chance. now i admit
i did not try to call about a replacement 50amp link, but
my friend from bmw said that it was very unlikely since the
original was hardwired part of the original cable.
The second link in a red wire that parallels the large black
wire off the battery. it was hidden underneath two layers
of heat shrink. i had to cut it out and replace it with my
own retro fit. now i have 12.9 volts to my dme instead of
2. this problem may be of intrest to others. took me two weeks
to reslove this issue and i dont think that bmw has a retro
fit for this fuse. you would have to buy a whole new battery
cable.
Fusible link symptoms with
good link from Greg R.
The electric windows, door locks, and sunroof went out completely.
The windshield wipers would only function in high speed and
wouldn't park. The problem I had turned out to be the black
box under the rear seat forward of the relay module. I found
references in a forum saying to check the relay module if
it wasn't the fusible link. Well the relay module was good
too. The problem was the contacts on the box. I figured it
out when I pulled this box out and reinstalled it. I held
the window down button and wiggled the box. The window worked
intermittently as I wiggled. After cleaning the contacts,
all works fine.
Thanks to Gordon, John T & Phil
S, Ron W.
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