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1988 BMW 5 Series
Problem for BMW 1988 5 Series

BMW electrical problem, help?




By Rogers - usenet poster

" "
I've got a 1990 525i. I intermittently would lose power to the
following all at once. Power windows, central locks, stereo, mileage
computer, sunroof. Now none of them have worked for two days. I've
changed the battery and checked the fuses to no avail. The rest of the
electrical is fine, (lights,indicators,a/c,fan/mirrors) Any ideas
would be appreciated. I can't get an appointment at the dealer for two
weeks.

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Best Solution

posted on May 14, 2008
Helpful)

Rogers

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In article <4s75b1$@dfw-ixnews10.ix.netcom.com says...

--
I can send you a copy of the wiring diagram if you need it and can view
jpeg files. Let me know by Email.
Jordan Blessing L1 Master Tech
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Solution #2

posted on Jul 12, 2008
Very Helpful)

ali8808

Rank: Apprentice 
Rating: 100%, 1 votes
i have a 1988 bmw and the speedometer and all the gages dont work...i lost the manuel book so how do i check the fuses to see which one is the problem... im missin alot of fuses from the car????
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Solution #3

posted on May 14, 2008
Somewhat Helpful)

Rogers

Rank: Apprentice 
Rating: 0%, 0 votes
In article <4s75b1$@dfw-ixnews10.ix.netcom.com Get a Bentley service manual from the dealer (60.00 or so.)Don't be afraid to
check it out.
If I were you,I would check for a bad relay or bad connection at the relay
plug.
A working relay will 'click' when it is closed.This closing of contacts will
allow current to flow to the devices it controls.Check for power to and from
each fuse.Turn key on and check fuse or fuses that are inline w/ the disabled
items.Make sure your getting power TO the fuse(s),as well as from the fuses.
Look in the service book and find out which relay conrols power to these items.
Turn on the key,and the relay sould click shut. your sunroof etc. should work.
IF it does'nt click,move it around a little,checking for a bad connection.you
could even get a relay used from a BMW wrecker
and install it .If everything works,you fixed it.Relays are on the fuse block
or on the relay block under the right side of dash.(1988 5 series)1990 check
the book.Join a BMW club-they can be
very helpful.The dealer can ream you.

A flooded BMW restorer
P.S. get a test light5.00 or so
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Solution #4

posted on Mar 12, 2009
Not Rated)

chanise

Rank: Apprentice 
Rating: 0%, 0 votes
I had the same problem with my 1990 525i. I would intermittently loose power to my windows, seats, radio, clocks, mileage, and etc. I checked the fuses and the relays and neither were the problem. I took it to the shop and found that the problem was in the ignition switch. They replaced the ignition switch and I haven't had a problem since. This was relatively inexpensive ( a little over $200) repair work.
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14 Other Users Have The Same Problem - Continued

Comment by Guest, posted on Nov 14, 2008

I have a light indictor on. I do not know what it is. It looks like thi (O)

Comment by Guest, posted on Oct 29, 2008

I have a 1999 540i. The speedometer works off and on. The air bag light is also on. Can someone help me with these problems?

Comment by robmcggg, posted on Sep 07, 2008

Hi
My 1999 323i automatically opens all windows and sunroof during the night. I come out in the morning to a completely opened vehicle. This has happened several times. During these opened times there is also trouble locking the car...the windows open again.

Comment by bautista2944, posted on Sep 06, 2008

My interior lights turn on and off, at the same time my steering wheel adjustment goes up and down without touching the lever and my radio shuts down. Can you tell me how I should fix this problem?

Comment by enidan97, posted on Aug 24, 2008

I have the identical problem with the electricals (interior lights, central locks,radio, windows, mirrors) going out. The A/C and lights are OK. As a temporary solution, removing the modules - both under the rear seat & the engine compartment - and reseating them solves the problem temporarily. I have not figured out exactly which module is the culprit as yet.

Comment by Guest, posted on Aug 24, 2008

WHEN ENGINE IS COLD, IT WOULD START AND RUN FOR 3 KILIMETERS THEN IT STARTED TO STALL AS IF OUT OF TUNE

Comment by Guest, posted on Aug 08, 2008

lose power to windows and locks also sunroof

Comment by haugermeiste, posted on Jul 16, 2008

something is draining my 5 series 1990 battery is dead every day and i checked everything any ideas

Comment by rothes4, posted on Jun 19, 2008

I have a 1997 BMW Z3 Roadster. It turns over and is getting spark and fuel, but won't start. The stereo was stolen, and i am wondering if that messed up some wiring? There is also some kind of electrical looking plug that says made in Germany hanging down by the gas pedal. I have followed the wires and can't figure out what it is for.

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