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snapontech
snapontech, Auto Mechanic
Category: Ford
Satisfied Customers: 3803
Experience:  2 Year Automotive Degree 2 years hands on technical training and 7 Years hands on learned from the best.
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2000 Ford Windstar: Alarm goes..aftermarket..it uses the oem key fob

Customer Question

2000 Ford Windstar. Alarm goes off by itself (triggered). there's an aftermarket alarm that was installed by the dealer but it uses the OEM key fob. When alarm is activated, LED light flashes 3 times.
Do you know which zone was triggered.
Submitted: 2 years ago.
Category: Ford
Expert:  snapontech replied 2 years ago.

snapontech :

Welcome to Justanswer, My name is Danny I am here to help.

snapontech :

Normally if this is being triggered its because of the actual door switches are not indicating the door is closed

snapontech :

The way these work is if the door is opened without the handle it will go off

snapontech :

So if the switch is not showing it being closed when the alarm is active it will do this

Customer :

at this time, when the doors are closed, the dome lights goes off. Could it be a bad door module?

snapontech :

I am not sure how they wired in this aftermarket alarm

Customer :

when a door is ajar and you arm the system, the siren chrips 3 times, letting you know that one of the doors are open

snapontech :

Does it go off even when its not activated?

snapontech :

Does it go off even when its not activated?

Customer :

no

Customer :

only when it's activated

snapontech :

They may have installed proximity switches

snapontech :

They can put them on the hood

snapontech :

Also a level sensor of the vehicle is not level

Customer :

where would it be located?

Customer :

the car is level when its activated

snapontech :

The problem is if one of these has a bad connection or shorted this will happen

snapontech :

Have you changed the battery in the remote?

Customer :

nope

snapontech :

I have seen low batterys cause this

Customer :

remote still works

snapontech :

Also does this happen all the time

snapontech :

Or only at a certain location

Customer :

all the time anywhere

Customer :

so a low battery on the remote could cause this?

snapontech :

I have had it happen

Customer :

do you know which zone of the alarm was triggered when the led on the dash flashes 3 times?

snapontech :

Not sure

Customer :

it always flashes 3 times when alarm is triggered

snapontech :

This doesnt show me any specific details on the area

snapontech :

I know it can be a bad switch though either the one on the hood which will be in place normally on the actual front support will look like a little button that gets pushed when the hood is down

Customer :

there's no pinswitch on the radiator support

snapontech :

I would honestly be upset and have a real shop that deals with alarms

snapontech :

Look at it

snapontech :

Because ford is out of there support here

snapontech :

They could have pretty much done anything

snapontech :

Without knowing its hard to trace the exact problem down

snapontech :

I would lube all the switchs for the doors with wd40

snapontech :

Replace the remote battery

snapontech :

When you do lube them close and open the door many times

snapontech :

Even though there is no light doesnt mean its not having a problem

Customer :

keep in mind that the ford dealership installed the alarm using the OEM keyfob

snapontech :

Really

snapontech :

That just seems ghetto

snapontech :

What did they do add a few sensors to go bad

Customer :

no aftermarket switches

Customer :

it was installed since my mom bought it brand new

Customer :

Im thinking they just added the siren to the stock alarm

snapontech :

So they installed a regular system

snapontech :

As ok. That makes more sense

Customer :

stock system

Customer :

does every door have a door module?

Customer :

maybe one of those module could go bad

snapontech :

There is only one for all the doors

Customer :

is there a diagnostic tool to locate which switch is bad?

Customer :

other than Ford's?

snapontech :

Not that I am aware of

snapontech :

I would start by replacing that battery

snapontech :

They have them about 4 bucks at walmart ect

Customer :

ok

Customer :

but what if that's not the prob?

Customer :

keep in mind that a zone on the alarm has been triggered

snapontech :

From my experience with the stock add on there is not anything to set it off other than the actual door switches

Customer :

so there's only door switches on the alarm?

snapontech :

But I could be wrong here but I have not found one stock alarm that will go off unless the button is pressed or the door is opened armed with the window down

Customer :

so must be one of the switches could be bad

snapontech :

Yes or the battery or the remote

snapontech :

Try arming it

snapontech :

Then pressing the panic

Customer :

car battery has been replaced two months ago

snapontech :

The battery in the remote not the car battery

Customer :

I understand

Customer :

Im just informing you what has been done

snapontech :

Ok just wanted to make sure

snapontech :

Being on the PC and all some people may think I am talking about the car battery

Customer :

Im a technician myself for 20 years

snapontech :

Yes I have had some weird things with the stock alarms

snapontech :

Even one went off on a audi by a garage

snapontech :

Some signals it was getting to the remote

Customer :

im just unable to receive info on this particular vehicle

Customer :

if we know what 3 flashes on the LED means, then we can focus on that particular zone

snapontech :

Let me look at some stuff on this alarm

snapontech :

There is a anti theft hood switch

snapontech :

So I suspect this is bad or the front control module which controls it

snapontech :

#10 is the front module

Full Size Image

snapontech :

Full Size Image

Customer :

three of my co-workers used to be techs at a ford dealership and they all say it's hood switch goes bad

snapontech :

Yes this is wired into the hood ajar

snapontech :

Which is located at the latch

snapontech :

Violet orange coming from the front module to the switch then it has a ground

Customer :

which is the switch on the diagram?

snapontech :

Full Size Image

snapontech :

Full Size Image

snapontech :

C189 upper right

Customer :

see it

snapontech :

Give that a shot

snapontech :

If it doesnt fix the problem let me know

snapontech :

If this was helpful please take a moment to kindly press the green ACCEPT button in the lower right hand corner. Thanks in advance Danny

snapontech :

You can follow up anytime free of charge

Customer :

I should disconnect the hood switch and see if it would trigger or not trigger the alarm

Customer :

that's what my co-workers told me

snapontech :

Yes if disconnected should stop it from happening

Customer :

I dont have the vehicle right now but its on my way to my house

Customer :

I could check it then

snapontech :

Great.. Let me know if you need anything else

Customer :

thanks, will do

snapontech :

No problem.. Just dont forget to hit ACCEPT in the lower right if this is helpful only way I get credit.. Danny

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