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Car Alarm Nightmares


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#1 RColbert

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Posted 16 August 2004 - 05:57 AM

I'VE GOT A SERIOUS PROBLEM WITH MY CAR ALARM GOING OFF IN THE MIDDLE OF THE NIGHT WITHOUT ANYBODY OR ANYTHING NEAR IT. QUITE SIMPLY, IT JUST GOES ON ALL ON IT'S OWN. HAS ANYBODY ELSE EVER HAD THIS PROBLEM, AND IF SO, CAN YOU TELL ME HOW TO FIX THIS WITHOUT REPLACING THE ENTIRE ALARM SYSTEM? :unsure:

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#2 Lex3486

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Posted 16 August 2004 - 06:10 AM

I've never had this problem with my SC or one of our ES's but our Land Cruiser does this all the time. On that car, it's due to a faulty door open switch (the one with the black rubber cover over it). It could also be due to a weak battery. Actually, come to think of it, I think my ES did this once when the battery was on its' way out the door. If I were you, I'd check out your door switches and your trunk switch too. If one of these is faulty and causes the car to think that a door has been opened, then boom-alarm is triggered.

#3 JDOwen2

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Posted 16 August 2004 - 01:53 PM

I have read about a professional car thief that scouts out a car and triggers the alarm every A.M. until the owner shuts it off then he steals the car. Just a thought.

#4 Herb

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Posted 16 August 2004 - 05:59 PM

I am a victim of what JDOwen2 descibes---------although not with my Lexus.
My alarm went off in the wee hours of the morning about 3-4 times, I shut the alarm off the next night & the car was broken into.

Herb.

#5 SKperformance

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Posted 16 August 2004 - 07:06 PM

lexus car alarms dont have shock sensors for just that reason
not multiple vibration set offs

#6 spoelberg

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Posted 10 September 2004 - 10:56 AM

I'VE GOT A SERIOUS PROBLEM WITH MY CAR ALARM GOING OFF IN THE MIDDLE OF THE NIGHT WITHOUT ANYBODY OR ANYTHING NEAR IT. QUITE SIMPLY, IT JUST GOES ON ALL ON IT'S OWN. HAS ANYBODY ELSE EVER HAD THIS PROBLEM, AND IF SO, CAN YOU TELL ME HOW TO FIX THIS WITHOUT REPLACING THE ENTIRE ALARM SYSTEM? :unsure:

We have the same problem with our 1997 ES300. The alarm will suddenly turn itself on while the car is parked in the garage. The dealer replaced a switch in the trunk at the cost of $68 but to no avail. The problem persists!

By trial and error we have discovered that it only happens if the trunk has been opened and closed while only the driver's door is unlocked. If we unlock all doors, open and close the trunk lid, nothing happens. That represents a problem anywhere else but in our garage. In public places, if we open and close the trunk lid, we restart the engine, turn it off and lock all doors. Weird isn't it?

Anyway I am going to get in touch with the car dealer and relate my findings. If they manage to fix the problem I'll let you know.

Charles M. De Mets
demets@ptd.net

#7 SKperformance

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Posted 10 September 2004 - 11:21 PM

Isn't the alarm supposed to rearm by itself if the doors are not opened but unlocked?
Mine does if it was previously locked but not opened.

#8 wlaguy

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Posted 28 November 2004 - 04:06 PM

I have a 1993 SC300 with a car alarm problem. The alarm goes off at random. Anybody know how to disconnect the alarm with disconnecting other functions tied to the same fuse?

Thanks

#9 SKperformance

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Posted 28 November 2004 - 06:12 PM

put a resistor in the trunk wiring for the lock and it will think the lid is open and not arm once locked

#10 vianuchi

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Posted 27 April 2011 - 12:33 AM

Seriously go search on youtube for ST800 smart system.. they are here in us if you are having problems with cheap alarms.

Dont know where you get it thou ..

#11 Andrew Nicholas

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Posted 26 March 2013 - 07:48 PM

hey i have the same problem but i did the same as you and it didnt fix my problem can anyone help or give me some advice please

 



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