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320Colin · 12-25-2008, 03:01 PM

hey guys:

its been a while since i've tapped into the wealth of knowledge on the forum here.... so

today for the very first time i go to lock my doors using the driver side key hole... as per usual. and none of the other doors lock, i pop the hood check the fuses none of them are blown, with the hood still open i hear a strange noise only when i go to lock the doors its a strange whirring noise and still none of the other doors or trunk lock, i have tried it from all doors and the trunk and no luck. so. my question is what fuse/relay is associated with the central locking system and has anyone had this problem before

thanks in advance

Colin...

Mengil · 12-25-2008, 04:22 PM

There is a central lock control module that is located by the driver foot panel just below the speaker they often go bad that sounds like the culprit.

Mengil

twinpac · 12-27-2008, 04:29 PM

you can actually open it up and clean the contacts, its pretty much a bunch of relay contacts. mine went bad once i tok it out popped it open and could see that one of the contacts was welded together i just cleaned it up and it woked fine again

320Colin · 12-27-2008, 05:17 PM

wierdest thing guys... it just started working again...

Mengil · 12-27-2008, 05:34 PM

Probably got wet you should take it out look at it, and clean as necessary to prevent future damage.

DS Rook · 12-27-2008, 07:31 PM

You sir, have corrosion in the drivers door pins/loom.

320Colin · 12-29-2008, 12:53 PM

Originally Posted by DS Rook

You sir, have corrosion in the drivers door pins/loom.

im listening please continue

redhatpat · 12-30-2008, 07:51 PM

DS Rook, I was thinking the same thing. You can pull apart the large electrical connector in the driver's door jamb and clean up the contacts. Or so I hear - I haven't been able to get mine apart and I don't want to break the darn thing.

execuk · 03-25-2009, 06:07 PM

check big connector in door/frame (21 pin) if it working randomly, if it never does take out control unit and surely the internal fuse is gone (a vertical plated, unmarket thing with 2 soldering legs)

Jono-vision · 09-26-2009, 03:50 PM

In the E28's(as far as I've been told) the central locking unit control module is located on the Passenger side above the speaker, mine will malfunction in wet weather, I have yet to fix it. It's a ******* to get to.

execuk · 09-28-2009, 10:53 AM

if it is not the door connector (usual problem), take control unit and open it; there is an unmarked fuse that might be open (this happens when system is used too many times in a row); just jump it and you are in biz...

12-25-2008, 03:01 PM	#1 (permalink)
320Colin Senior Member Joined: Sep 2007 From: White Rock Posts: 521 iTrader: 0 Thanks: 8 2 Times in 2 Posts	Central locking issues hey guys: its been a while since i've tapped into the wealth of knowledge on the forum here.... so today for the very first time i go to lock my doors using the driver side key hole... as per usual. and none of the other doors lock, i pop the hood check the fuses none of them are blown, with the hood still open i hear a strange noise only when i go to lock the doors its a strange whirring noise and still none of the other doors or trunk lock, i have tried it from all doors and the trunk and no luck. so. my question is what fuse/relay is associated with the central locking system and has anyone had this problem before thanks in advance Colin...

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12-25-2008, 04:22 PM	#2 (permalink)
Mengil Member Joined: Mar 2008 From: Cloverdale Posts: 37 iTrader: 0 Thanks: 0 0 Times in 0 Posts	There is a central lock control module that is located by the driver foot panel just below the speaker they often go bad that sounds like the culprit. Mengil

12-27-2008, 04:29 PM	#3 (permalink)
twinpac Member Name: adrian Joined: Dec 2008 From: kelowna Posts: 36 iTrader: 0 Thanks: 0 0 Times in 0 Posts	you can actually open it up and clean the contacts, its pretty much a bunch of relay contacts. mine went bad once i tok it out popped it open and could see that one of the contacts was welded together i just cleaned it up and it woked fine again

12-27-2008, 05:17 PM	#4 (permalink)
320Colin Senior Member Joined: Sep 2007 From: White Rock Posts: 521 iTrader: 0 Thanks: 8 2 Times in 2 Posts	wierdest thing guys... it just started working again...

12-27-2008, 05:34 PM	#5 (permalink)
Mengil Member Joined: Mar 2008 From: Cloverdale Posts: 37 iTrader: 0 Thanks: 0 0 Times in 0 Posts	Probably got wet you should take it out look at it, and clean as necessary to prevent future damage.

12-27-2008, 07:31 PM	#6 (permalink)
DS Rook Senior Member Joined: May 2007 From: Northshore Posts: 548 iTrader: 0 Thanks: 2 6 Times in 6 Posts	You sir, have corrosion in the drivers door pins/loom.

12-30-2008, 07:51 PM	#8 (permalink)
redhatpat Senior Member Joined: Feb 2006 From: Pitt Meadows Posts: 866 iTrader: 0 Thanks: 2 1 Time in 1 Post	DS Rook, I was thinking the same thing. You can pull apart the large electrical connector in the driver's door jamb and clean up the contacts. Or so I hear - I haven't been able to get mine apart and I don't want to break the darn thing.

03-25-2009, 06:07 PM	#9 (permalink)
execuk Member Joined: Jul 2007 From: BC - NORTHVAN Posts: 60 iTrader: 0 Thanks: 0 0 Times in 0 Posts	check big connector in door/frame (21 pin) if it working randomly, if it never does take out control unit and surely the internal fuse is gone (a vertical plated, unmarket thing with 2 soldering legs)

09-26-2009, 03:50 PM	#10 (permalink)
Jono-vision Senior Member Name: Jono Joined: Aug 2009 From: Victoria Posts: 103 iTrader: 0 Thanks: 8 0 Times in 0 Posts Jono-vision's pictures '83 BMW 528e	In the E28's(as far as I've been told) the central locking unit control module is located on the Passenger side above the speaker, mine will malfunction in wet weather, I have yet to fix it. It's a ******* to get to.

09-28-2009, 10:53 AM	#11 (permalink)
execuk Member Joined: Jul 2007 From: BC - NORTHVAN Posts: 60 iTrader: 0 Thanks: 0 0 Times in 0 Posts	if it is not the door connector (usual problem), take control unit and open it; there is an unmarked fuse that might be open (this happens when system is used too many times in a row); just jump it and you are in biz...

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Central locking issues