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04 Diesel 08-18-2010 07:10 PM

Alarm going off
 
I have a 1992 300D 2.5 and the alarm went off at 3am for no reason, turned it off. Wife told me that now the door locks do not work now, push the lock button on key fob and some times the alarm goes off and the doors do not lock. I tryed to lock the doors with the key and only the drivers door locks. What is going on?

whunter 08-18-2010 07:45 PM

Answer
 
Factory Alarm System Issues
http://www.peachparts.com/shopforum/diesel-discussion/150748-factory-alarm-system-issues.html#post1143583

04 Diesel 08-18-2010 08:21 PM

Quote:

Originally Posted by whunter (Post 2528151)


Why would the door locks stop working?

Aquaticedge 08-18-2010 09:37 PM

door locks are tied to the alarm system, if there's a fault in the alarm system then its possible that the default setting would be to disable the locks. it's all a guess though

04 Diesel 08-22-2010 11:57 AM

Quote:

Originally Posted by Aquaticedge (Post 2528221)
door locks are tied to the alarm system, if there's a fault in the alarm system then its possible that the default setting would be to disable the locks. it's all a guess though


If I unplug the alarm will the locks work again?

scottmcphee 08-22-2010 01:32 PM

try it, easy to do and find out.

when was the last time a car alarm actually helped? I mean, really, if somebody wants your car it's theirs.

If there is something sitting on a seat they want, it's theirs... takes about 5 seconds to break a window and grab the item. Your alarm won't even go off.

I disconnected and/or removed all alarm parts from the car that were easy to get at... and I don't leave anything valuable in the car.

04 Diesel 08-22-2010 09:21 PM

Well, I looked under the mats on the passenger side floorboard and the only thing there was the connection for the airbag. Where is my alarm control box at?

whunter 08-23-2010 04:23 AM

Answer
 
Quote:

Originally Posted by 04 Diesel (Post 2530437)
Well, I looked under the mats on the passenger side floorboard and the only thing there was the connection for the airbag. Where is my alarm control box at?

Look at the pictures in this thread..
* Remove floor mats.
* Look at the bulkhead/firewall.
* Remove large black steel panel.

How-to: Disable alarm on a 1993+ W124
http://www.peachparts.com/shopforum/tech-help/269799-how-disable-alarm-1993-w124.html#post2386200

04 Diesel 08-23-2010 07:10 PM

Quote:

Originally Posted by whunter (Post 2530638)
Look at the pictures in this thread..
* Remove floor mats.
* Look at the bulkhead/firewall.
* Remove large black steel panel.

How-to: Disable alarm on a 1993+ W124
http://www.peachparts.com/shopforum/showthread.php?p=2386200

I did and there is nothing like that there, the only thing that is there is one red plug and that is for the airbag. What next? And now I cant open my fuel door, it is locked and will not open. How do I open that also? Thanks

whunter 08-23-2010 07:26 PM

Answer
 
Quote:

Originally Posted by 04 Diesel (Post 2531051)
I did and there is nothing like that there, the only thing that is there is one red plug and that is for the airbag. What next? And now I cant open my fuel door, it is locked and will not open. How do I open that also? Thanks

Look behind the passenger kick panel...

04 Diesel 08-28-2010 11:52 AM

Quote:

Originally Posted by whunter (Post 2531067)
Look behind the passenger kick panel...

I did and there is nothing there.

vstech 08-28-2010 12:58 PM

I think my 93 parts car has alarm goodies stuffed behind the ash tray.
it's also possible an aftermarket alarm kit was installed in your car... pop the hood and look for foreign items near the fusebox. any large horns or anything added to the car?

04 Diesel 08-29-2010 11:13 AM

Thanks for all the help, the problem was the vacuum pump under the back seat. One of the solder joints broke so I resoldered the joint and all works now.

04 Diesel 09-08-2010 09:37 AM

Quote:

Originally Posted by vstech (Post 2533963)
I think my 93 parts car has alarm goodies stuffed behind the ash tray.
it's also possible an aftermarket alarm kit was installed in your car... pop the hood and look for foreign items near the fusebox. any large horns or anything added to the car?

Well the alarm is not working right now, I got a vacuum pump from a 190E. The door locks work now but the alarm still goes off when you open the back doors. Yes there is a horn under the hood, does that mean the alarm is a aftermarket?

MBeige 09-08-2010 01:31 PM

Quote:

Originally Posted by 04 Diesel (Post 2540536)
Well the alarm is not working right now, I got a vacuum pump from a 190E. The door locks work now but the alarm still goes off when you open the back doors. Yes there is a horn under the hood, does that mean the alarm is a aftermarket?

Factory alarm uses standard Bosch or Hella horn on driver side fender near ABS module.

The alarm module is located under the carpet, on passenger side front floor board.


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