Why does my alarm go off when I unlock the door with my key? - JeepForum.com
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Unread 05-09-2013, 05:13 PM   #1
ColinWK
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Why does my alarm go off when I unlock the door with my key?

Either something is messed up or Chrysler didn't use their brain when they put this feature in...

If I unlock the door manually with my key, which I had to yesterday before I could get another battery for the remote unlock, the alarm goes off if I open the door.

Does this happen for anyone else and is there a way to put a stop to that?

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Unread 05-09-2013, 05:19 PM   #2
Mainsail
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Because the vehicle can't tell the difference between a key and a slim-jim. All it knows is that the door opened.
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Unread 05-09-2013, 05:20 PM   #3
ColinWK
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Quote:
Originally Posted by Mainsail View Post
Because the vehicle can't tell the difference between a key and a slim-jim. All it knows is that the door opened.
Is there a way to disable it or something?
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Unread 05-09-2013, 06:06 PM   #4
Discman03
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I had this issue when the fob stopped working and I was waiting for a new one. If you manually lock the doors instead of using the button, it won't set the alarm(because the alarm is not activated). Also, you could hop in and drive off. I believe the alarm shuts off once you're over 15mph.
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Unread 05-09-2013, 07:41 PM   #5
Shafer57
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Haven't tested this yet, but on most cars/trucks, turning the key 2 to sometimes 8 times disarms the alarm. As well as unlocks all doors versus just the driver.

A Chrysler T&C I worked on was clockwise 8 times to disarm.
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Unread 05-09-2013, 11:37 PM   #6
trax95008
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Quote:
Originally Posted by Mainsail
Because the vehicle can't tell the difference between a key and a slim-jim. All it knows is that the door opened.
I don't think that's true. When you unlock with a key, the sentry key system "looks" to see if its a programed key and disables the alarm. I think in this case, there is something wrong with he OP's vehicle. It should not behave that way
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Unread 05-10-2013, 12:01 AM   #7
TurboDiesel
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the lock button on the fob arms the alarm
the unlock disarms the alarm...
simple

my alarm goes off when i use my key too
just stick the key in the ignition and turn it to the on position
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Unread 05-10-2013, 09:26 AM   #8
IndyBlueWK
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isnt this messed up.. My Bat has been dead in my keyfob for months and I deal with this crap everyday....
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Unread 05-10-2013, 05:15 PM   #9
Shafer57
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Quote:
Originally Posted by trax95008 View Post
I don't think that's true. When you unlock with a key, the sentry key system "looks" to see if its a programed key and disables the alarm. I think in this case, there is something wrong with he OP's vehicle. It should not behave that way
The range on a transponder for a key is about 1/2". There is no sensor in the door locks to look for a transponder (Sentry Key).
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Unread 05-10-2013, 05:16 PM   #10
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Quote:
Originally Posted by IndyBlueWK View Post
isnt this messed up.. My Bat has been dead in my keyfob for months and I deal with this crap everyday....
hm, the battery is not all that expensive.. you could just replace it, unless you like complaining about it

But whatever.
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Unread 05-10-2013, 05:22 PM   #11
skip11and1
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may be something with the battery being dead too. Since there is a chip in the key the battery for the fob may have something to do with sending a signal to the key to turn the alarm off?...just a guess
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Unread 05-11-2013, 12:22 PM   #12
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Quote:
Originally Posted by Shafer57 View Post
The range on a transponder for a key is about 1/2". There is no sensor in the door locks to look for a transponder (Sentry Key).
That is lame, even my 98 Ford Explorer could tell when the key was used to unlock the door and wouldn't set the alarm off.
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Unread 05-11-2013, 01:21 PM   #13
Shafer57
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Quote:
Originally Posted by terrasmak View Post
That is lame, even my 98 Ford Explorer could tell when the key was used to unlock the door and wouldn't set the alarm off.
Same range. The only thing your explorer could tell is that the linkage was moved in the door by key, there are no "sensors" to see the chip in the key in any door locks.

My bet is that if you armed the vehicle with a remote, and left your window cracked. Reached inside the window and pulled the door handle from the inside it would go off.
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Unread 05-11-2013, 08:16 PM   #14
YB Normyl
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The Intrepids, 300Ms, and Concordes equipped with alarm had a small Pezo switch that snapped on the back of the door lock cylinder
so when you turn the cylinder to lock or unlock, it would arm or disarm. Using a slimjim moves the rod but doesn't turn the lock cylinder.
i guess they did away with that system.
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Unread 05-12-2013, 01:02 PM   #15
ColinWK
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I just replaced the battery for the remote and it only works about half of the time. Wondering if it's a faulty battery or they messed up my key
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