- Started to leave a friend's house at 11:30pm. I had backed into the
driveway. Car started fine despite cold. Touched the wiper lever to
clear the windshield. Started ahead. At the PRECISE moment I was
going over the curbing between the driveway and road, I quickly
flicked on the lights. Car completely died! No electrics. No
lights. No dash indicators. Nothing. Tachometer needle "flutters"
when I turn the key in the ignition.
Checked all the fuses and relays (with flashlight). Did not see
Brand new battery, about 2 months old new. Checked the connections to
the battery terminals. Seem fine.
It's too cold and dark for any more diagnostics right now. Tired and
First thing I'm going to check is for good ground from battery
negative terminal into the chassis.
Then I think I need to start hunting down shorts.
But I don't know where to begin.
- --- In bmwe28@..., "bnancarrow" <blaken@...> wrote:
> First thing I'm going to check is for good ground from batteryUpdate on dead car.
> negative terminal into the chassis.
Went out this morning at around 7:30am. Unlocked driver door with
key. Heard the solenoids in the other doors weakly move. Hmmm.
Power to the rest of the car.
Key in ignition. Turned to the ON position. Everything lit up as per
usual, clock, instrument cluster idiot lights, etc.
Fired motor. It started immediately! Woo hoo.
Turned on lights SLOWLY. First click, to running lights or marker
lights only. Everything OK. Next click to front headlights. Car
Turned off. Tried to restart. Nothing!
I'm baffled. What does this mean?
- when my 85 535 had a REALLY dead battery, it didn't have enough voltage for
the engine computer to operate - no start. I couldnlt bump start either. The
headlights are a big load on the battery, and if the alternator isn't
charging, or has a loose connection, you might get the symptoms you decribe.
charge the battery, check the alternator (and associated wiring), and email
us in the morning.
Waterloo, Ontario Canada, eh
86 951 (http://www.pcaucr.org/forum/post.jsp?postid=2393)
94 855 turbo
- Sounds like you have a short in your Battery. As soon as you place a load on the unit it will arc over and kill everything. This is caused by the plates in the battery either cracking or touching each other. if you can get it running again and drive it to a auto store, they should be able to check it for you. Cold weather is a big cause of this. I hope this helps.
We won't tell. Get more on shows you hate to love
(and love to hate): Yahoo! TV's Guilty Pleasures list.
[Non-text portions of this message have been removed]
- Quoting doug dykaar <ddykaar@...>:
> when my 85 535 had a REALLY dead battery, it didn't have enough voltage forThis morning, I did a quick voltage check on the battery. 12.2 while connected
> the engine computer to operate - no start. I couldnlt bump start either. The
> headlights are a big load on the battery, and if the alternator isn't
> charging, or has a loose connection, you might get the symptoms you decribe.
> charge the battery, check the alternator (and associated wiring), and email
> us in the morning.
to the car. Disconnected the battery for 15 minutes, checked again. Same
reading. That's reasonable given it's -6°C with wind chill to -16°C.
Hooked the multi-meter in series with the battery and the negative line. Was
getting a reading of 0.30 amps! There's a short somewhere!
Finally pulled fuse #5 and the amps dropped to nearly zero. That circuit has
central locking, glove box, seatbelt warning, antenna, instrument cluster,
interior lights, trunk light, etc. Interior lights have not been working
lately. Wonder if the problem is there.
Tried starting the car. Nothing.
Hooked up my portable boost battery and the car started. Disconnected the boost
battery after 30 seconds, negative lead first, car still running, then positive,
and the car died! Very weird! Spark when I touched the positive terminal.
Redid this sequence, same thing happened.
Unbolted, turned, and reconnected the positive battery connector. Works fine
now! Car starts immediately.
So, I'll buy a new battery connector. This one's pretty corroded... And I'll
start tracing shorts in circuit 5...
Thanks for the tips!
(sent via Computer Ease webmail while at SOHOma)