Pressed Ignitiion Start button ==> click/then dead

Post your E12 technical questions and comments here. Please, no off-topic posts.

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socalfiver
Posts: 229
Joined: Wed Jul 21, 2010 12:31 pm
Location: Los Angeles, CA

Post by socalfiver »

Dang. That carpet has been so hard to find. I've been looking for over a year.

Thanks for letting me know before I wasted the gas $$ and time going down there.
"Get it while you can." -Janis Joplin

1980 528i Automatic, "Frau Blucher"
1982 BMW R100RS
1982 633csi 5 speed
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Mike W.
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Joined: Wed Aug 30, 2006 12:12 am
Location: Sonoma County

Post by Mike W. »

That's the flasher relay. The 4X21W is a dead giveaway.

I realize we're still not much closer on your no start, but look at what color and where what wires are at the ignition switch.
Mike W.



02 525ita. Wife's, aka grocery getter
02 530i. New to the fleet, 3 pedals.
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alotawatts
Posts: 438
Joined: Wed Jan 07, 2009 3:52 am
Location: Seattle WA

Post by alotawatts »

Mike W. wrote:That's the flasher relay. The 4X21W is a dead giveaway.
If this relay has a continues fast-click it is toast. Unlike the hazard switch/button which is repairable this relay is not....unless you have the ways and means to diagnose and replace bad transistors and capacitors.
:cry:
Three E12's and one R27
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carlsturm
Posts: 79
Joined: Wed Jun 15, 2011 6:47 pm

Post by carlsturm »

Damn you guys are good. Yes, it is the blinker. It's odd this blinker clicking sound coincided with my no start issue.

Sorry for the delay getting back to read the posts but I was called out of town on business on short notice. When I get home I'll start debugging the no start issue.

Thanks for all the help guys.
79 528i
carlsturm
Posts: 79
Joined: Wed Jun 15, 2011 6:47 pm

Post by carlsturm »

ty Mike. I'll take a look at those when I get back home.

Mike W. wrote:That's the flasher relay. The 4X21W is a dead giveaway.

I realize we're still not much closer on your no start, but look at what color and where what wires are at the ignition switch.
79 528i
carlsturm
Posts: 79
Joined: Wed Jun 15, 2011 6:47 pm

ignition / start issue resolved

Post by carlsturm »

guys thanks for your assist on this issue.

The issue is fixed. One of the prior owners had connected a Start Button by splicing it's wires into existing wires. Trouble was they used Scotch tape to hold the wires together. One of the wires had come loose and it wasn't easy to find the spot where it should go. The length of the wire helped me narrow down the options. :) And yes, I installed real connectors to the wires so this doesn't happen again.

Anyways, now on the the Blinker and Brake Light issues. I'll take that into a new thread.
79 528i
EURO M3 CSL
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Joined: Wed Jun 03, 2009 7:28 pm
Location: Bay Area

Post by EURO M3 CSL »

socalfiver wrote:On second inspection, i realized it could also be a flasher. Do you have a turn signal on? Signal on and a burnt out bulb would cause a fast click.
that is the flasher relay. I replace it recently on mind and it is a expensive part for what it is. O well. If its clicking from there its probably a bulb that burned out somewhere. Not sure if its relevant to your no start issue
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