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        General >> Problems >> car horn going off-is it a factory alarm?
        
(Message started by: whamburto on Nov 14^th, 2006, 9:44pm)

Title: car horn going off-is it a factory alarm?
Post by whamburto on Nov 14^th, 2006, 9:44pm

ive got a m reg 24v and the car horn goes off when i lock it,sometimes after 10 mins or after 5 hours..its the same noise as the car horn...is this a ford factory alarm or a horn gremlin?any advice would be great,thanks..

Title: Re: car horn going off-is it a factory alarm?
Post by Simmo on Nov 14^th, 2006, 10:13pm

The alarm horn is situated behind the battery whereas the warning instrument horns are under the front bumper on the offside so you should be able to decide which is which. Most likely to be the alarm horn. First check the bonnet switch,on the cross member to the left of the bonnet locking catch. Secondly the boot/tailgate lock and then all four doors. The bonnet catch is a favourite and a dose of WD40 may be all that is required. ;). Let us know how you get on.

Title: Re: car horn going off-is it a factory alarm?
Post by whamburto on Nov 14^th, 2006, 10:22pm

ritey ho...will print reply and take a gander...started a month ago as weather got wetter,...thought it maybe electrical(dont no much bout cars!!)thanks simmo..will definitely let you no how it goes...thanks again

Title: Re: car horn going off-is it a factory alarm?
Post by Simmo on Nov 15^th, 2006, 6:52am

The most important thing on these cars (which model do you have) is to make sure there is a battery cover fitted, that all the drain holes near the two fuseboxes are clear of dirt and debris,and that the fuseboxes themselves have the lids properly fitted. Some members put small bags of 'silica gel' ( as used in camera bags etc) in the boxes in order to absorb any moisture but the main aim is to prevent it getting in in the first place. If you need to get at the alarm horn or clear that area have a read of THIS (http://www.fordscorpio.co.uk/battery.htm). Once the battery is out the horn is readily accessible.

Title: Re: car horn going off-is it a factory alarm?
Post by mr._floppy on Nov 15^th, 2006, 12:17pm

Just disconnect the alarm horn ( one spade connector ) easy to get to at back of battery.
Does your dashboard indicator show that all doors and the boot are closed ?

My boot light was flickering when going round corners which showed that something was wrong and it subsequently led to some nocturnal noisiness from the alarm until I sorted out the dodgy boot wiring.

Title: Re: car horn going off-is it a factory alarm?
Post by whamburto on Nov 16^th, 2006, 10:56pm

ive checked and its definitely the horn behind the battery,locked car and opened bonnet...90 secs later alarm went off,i dont have the battery cover but will order it asap,will also check fuse boxes for signs of damp.i dont think ive ever seen a door open sign on my dash,my model is a scorpio exec 24v auto registed in feb 95(2935cc),im off friday so will be able to have a look then at the fuse boxes and may just disarm alarm for now,means i can lock car,many thanks for the helps lads,...its appreciated and i will let you no what occurs

Title: Re: car horn going off-is it a factory alarm?
Post by harry.m1byt on Nov 16^th, 2006, 11:00pm

I think the bonnet needs to be closed, or the alarm will be triggered. Put something on the alarm trigger button to push it down, if you want to test with bonnet open.

Title: Re: car horn going off-is it a factory alarm?
Post by whamburto on Nov 16^th, 2006, 11:42pm

roger that harry...wanted it to go off so i could check if it was horn or alarm....

Title: Re: car horn going off-is it a factory alarm?
Post by harry.m1byt on Nov 17^th, 2006, 4:08pm

on 11/16/06 at 23:42:38, whamburto wrote:

roger that harry...wanted it to go off so i could check if it was horn or alarm....

It used to be (so I'm told, I discovered it accidently) a diagnostic for the Granada's alarm that if you tapped the bonnet sensor repeatedly with the alarm off, that the alarm would produce several beeps to confirm it was working. I was also told that the Scorp is supposed to act similarly.

I have checked the operation of the Scorp's alarm and everything works as expected, except I have not been able to trigger it with the alarm off by repeatedly tapping the bonnet sensor.

Title: Re: car horn going off-is it a factory alarm?
Post by whamburto on Nov 21^st, 2006, 9:01pm

highlander reckons its my bonnet release catch thats the problem,its hanging on by a thread and in a bad nick,have unhooked alarm in mean time....thanks for the advice guys..