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Old 02-01-2012, 08:38 PM
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oem alarm probs

i dont know if this is in the right section,my key fob locks the car but wont unlock it. so when i open it with the key the alarm sounds. obviously my key switch in the door is faulty but i would like to know how to disable the factory system.
i believe aftermarket alarms can be wired in to switch off the factory one but in the mean time i would like to just disable it. i found the correct wire and earthed it out but didnt install a resistor. 463 ohm . no luck with that though. its a 99 wj.
please help. thanks in advance.
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Old 02-01-2012, 09:11 PM
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Re: oem alarm probs

I think that if you donīt want to use the OEM alarm anymore, that it has to be diabled in the BCM programming, with the use of a DRBIII scan tool.
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Old 02-02-2012, 12:55 AM
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Re: oem alarm probs

thanks frango,i was trying to avoid a trip to the stealership but if that is my only option i guess ill have to do it.
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Old 02-02-2012, 03:44 AM
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Re: oem alarm probs

dude take your fob apart and and inbetween the rubber and the circuit board the is a thin plastic with to white spots these are the circuit completers so when thay get pressed thay make the circuit and lock unlock
alinge the thin sheet of plast with the 3 holes in the circuit board and tape the bugger to the circuit board to stop it moveing

i had this all the time locks every time but unlocking i had to press like 10 times but now it works evry time first press also take it you have replaced the batterys as i have found low batterys will not unlock but will lock fine stupid jeep
worth a try
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Old 02-02-2012, 05:25 AM
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Quote:
Originally Posted by briggy View Post
i dont know if this is in the right section,my key fob locks the car but wont unlock it. so when i open it with the key the alarm sounds. obviously my key switch in the door is faulty but i would like to know how to disable the factory system.
i believe aftermarket alarms can be wired in to switch off the factory one but in the mean time i would like to just disable it. i found the correct wire and earthed it out but didnt install a resistor. 463 ohm . no luck with that though. its a 99 wj.
please help. thanks in advance.
Not sure if this will work for your wj? You can disable the alarm yourself without going to the dealership on the wk2's. The instructions on how to do it are a bit confusing I believe that they purposely made it this way so thieves would also have a hard time trying to disable it. I believe that is the reason that they did not make it an option on the EVIC.

I copied these instruction from the jeep grand Cherokee app ( I believe it's only available for the iPhone).

From the app go to
Vehicle operation
Getting started
Theft alarm

Good luck! Let us know if it works.

To Arm:
Keyless Enter-N-Go button installed (Vehicles Equipped With Engine Start/Stop Button)

Press the Keyless Enter-N-Go Start/Stop button until the Electronic Vehicle Information Center (EVIC) indicates that the vehicle ignition is “OFF”. Press the power door lock switch while the door is open, press the Key Fob LOCK button, or with one of the Key Fobs located outside the vehicle and within 5 ft (1.5 m) of the driver's and passenger front door handles, press the Keyless Enter-N-Go LOCK button located on the door handle.

Keyless Enter-N-Go button not installed (Vehicles Equipped With Ignition Switch)

Turn the ignition switch to the “OFF” position. Press the power door lock switch while the door is open, press the Key Fob LOCK button, or with one of the Key Fobs located outside the vehicle and within 5 ft (1.5 m) of the driver's and passenger front door handles, press the Keyless Enter-N-Go LOCK button located on the door handle.

Note:
After pressing the Keyless Enter-N-Go LOCK button, you must wait 2 seconds before you can lock or unlock the vehicle via the door handle.

To Disarm:
Keyless Enter-N-Go button installed (Vehicles Equipped With Engine Start/Stop Button)

Press the Key Fob UNLOCK button or with one of the Key Fobs located outside the vehicle and within 5 ft (1.5 m) of the driver's and passenger front door handles, grab the Keyless Enter-N-Go door handle and enter the vehicle, then press the Keyless Enter-N-Go Engine Start/Stop button (requires at least one valid Key Fob in the vehicle).

Keyless Enter-N-Go button not installed (Vehicles Equipped With Ignition Switch)

Press the Key Fob UNLOCK button or with one of the Key Fobs located outside the vehicle and within 5 ft (1.5 m) of the driver's and passenger front door handles, grab the Keyless Enter-N-Go door handle and enter the vehicle, then turn the ignition to the ON/RUN position.
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Old 02-02-2012, 10:46 PM
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Re: oem alarm probs

thanks guys. i believe it has to be defeated manually by a wiring modification.
the wk11 instructions arent applicable to the wj but thank you.
my key fob is crap. my 6mth old baby thought it was a good idea to slobber all over it,which wrecked the unlock section inside. lock still works but not unlock.
guess i will go with an aftermarket keyless setup and at least get more than 1ft range from my remote. new batteries and all it has never worked from more than 3 ft.
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Old 02-04-2012, 10:57 PM
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Re: oem alarm probs

thanks guys,now this may be a little long winded but i need to explain myself a little better.
the factory alarm is disabled by turning the key in the door lock.the switch that does this is faulty on mine so the alarm goes off every time i unlock the door.
my key fob is broken and will only lock remotely but not unlock. batteries are new etc. the circuit board is coroded at the open button.
aftermarket alarms have an output to pulse the circuit for the key switch on the doorlock.and from what i can work out this involves putting a 463 ohm resistor onto the green and purple wire and earthing it to the body.
however it must go through a relay.of course this switches the factory system on and off when the aftermarket alarm is on or off. which has me confused.
the relay would be activated by the new alarm which would allow the green wire in the door to earth through the resistor.
what i need to know is ...does earthing permanantly through a resistor without a relay or trigger leave the factory system disabled permanantly.
so im hoping someone who installs alarms or has auto electrical experience may be able to answer this for me.
thanks Briggy.
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Old 02-05-2012, 12:32 AM
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Re: oem alarm probs

Why bother disabling it? Just lock it with the key too. It doesn't arm the alarm if you use the key to lock. You're using it anyway to unlock.
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Old 02-05-2012, 01:36 AM
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Re: oem alarm probs

well,yes you are right there. lol
its as much curiosity as anything. no one seems to be able to do it,but plenty of guys have alarm probs. oh well.
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Old 02-05-2012, 02:15 AM
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Re: oem alarm probs

Don't mind me I'm on a Mr.Obvious kick right now
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OK, fine...I'll admit...some amber lamps are good, and necessary.
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