Car Alarms: alarm went off without reason, horn siren, dash area


Question

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Thanks for your prompt answer. The horn (siren) won't sound unless the alarm is set by remore control and I try to start the engine. The remore control "lock" never sounds, only flases the orange lights, twice to lock and once to unlock the car. Yesterday, the orange lights were flashing without reason. My children told me the orange lights flashed a few times, later stop, and then flashed a few times again. This is when I went out and found out that I did not lock the car. I used the remore control to lock the car and I guess the lights didn't come off by themselves again.

The text above is a follow-up to ...

-----Question-----
My children saw the flashing lights of my car at 12:00 am. I went out and found out that I forgot to lock the car with the remote alarm control. Even so, with a "disarmed" alarm the lights did flash. This alarm has been installed by the manufacturer Hyundai. Is the battery low or some another malfunction may be the possible cause? The car is a 2005 XG350. Thanks in advance.
-----Answer-----
This sounds like there is an aftermarket system
installed on the car as well as a factory alarm.

Please tell me what you are experiencing.

I need to determine whether it's a factory alarm
issue or, if it's an aftermarket system you are
dealing with.

Is it: Headlights flashing, car horn honking?
Or,
is it: flashing parking lights,
an LED in the dash area, and a siren
going off?

Let me know more on this to better
advise you on a course of action
to take, to help you to fix this
situation you're in quickly.

Best Regards,

Robert Martin
CEO/ALARMTEK
ALARMTEK.net

Answer
I appears this alarm might be aftermarket.
If so, it's in "anti-hijack" or long tamper mode.
Let's see what we can try....

Ok, put the key in the ignition, and turn forward
all the way just before cranking. Then within
5 seconds, locate, press and hold in the
valet/overide button, found under the
dash area, (push button, spring loaded)
until the installed LED (the blinking light)
in your dash area goes on solid,
and the siren chirps once.

(Your valet switch might be the toggle
(on/off) type. in this case, key on,
flip switch in opposite direction,
then turn the key off.)

This should reset the alarm, and reset
the grounded relay on the starter wire,
allowing you to start the engine.

At this point, the only thing working would
be the keyless entry from the alarm,
if it came equipped that way.

Just Repeat these steps to place it
back to usable armed mode.
You may get 2 chirps, confirming it,
and the lights may flash twice as well.

That should do it.
If you want to remove it at this point,
take it to your neighborhood installer
for this, or buy the wiring chart
(Go to: www.vehiclewires.com)
for the vehicle, and reverse engineer it wire
by wire, until safely removed.

If it does not work out this way,
you will have to replace the system
with one you know how to operate
and what to expect. Don't want to
get stuck in another bad situation.

Let me know what happens.
We can explore the Hyundai security
issues that they are responsible for under
your 5 year 100,000 mile tip to tip warranty.

Best aftersale offer for this class vehicle
and in this case, would be covered I assume.

Tell me what you discover.

Robert
www.ALARMTEK.net