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Hi there - hope somebody can help me. I have an 03 GT, bought used, love the car but the key fob with the security has gone missing. If I accidentally set off the alarm the car will not start, I believe it has an immobilizer. Can this be disconnected by pulling a fuse? Which fuse? ECU???

THANKS!
 

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Acountabilibuddy
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Cannot be disabled. Buy a new remote.
And if you pull the fuse marked ECU, which stands for Engine Control Unit, you will no longer have power going to the unit that controls your engine...
 

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While an immobilizer is a security system, it is different from an alarm. Immobilizer systems typically consist of a module after the ignition switch that will read the resistance of a chip inside the key. If you don't have a programmed key, the vehicle will not start even if the cut is correct. US XD didn't have this feature (I believe). In addition to an immobilizer system, you can also have an keyless entry alarm. All you have is the alarm, but I doubt you it will start if you pull the fuse. Maybe try disconnecting and reconnecting the battery until you can get a new remote.
 

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Our XDs will not start if the alarm is going off.
 

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Our XDs will not start if the alarm is going off.
Yeah, I know! And it sucks because at work when people drop off Hyundais, they like to lock their doors with the remote. Then come in to get written up and only leave us the key. Then we have to call them back for the remote. All other stock alarms I ahve seen will disarm when turnng the key in the drivers door. But no, not Hyundais!
 

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What I don't believe that. So if I go out right now to my car locked. Put the key in and unlock the door it wont start.
 

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Lock the car with the remote. Unlock it with the key. The alarm will go off. Try to start the car. It won't start. But do your neighbors a favor first, unplug the siren (under the hood, by the master cylinder).
 

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^ I did that to test the system.

Ford automobiles (at least the two I tested) don't have immobilizers -- if you unlock the door with the key or reach in and open the door from inside through the window the alarm will go off. If you get in and crank the engine, the alarm will stop and the car will start. Dumb.

The Elantra XD will not start with the key if the alarm is going off.
 

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Some immobilizers are only linked to the ignition system , via chip in key or resisters in the lock mechanism etc. Integrated with alarm is good I think. Some insurance companies
give a discount for ignition imobilized cars. They are now manditory for all new cars sold in Canada.
 

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Ok I forgot to try it. Also why do they do that what happens if i lose my remote and need to get into my car.
 

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keep your key attached to your remote?

lol, pretty simple logic right there.
 

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I always do.
 

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Ok I forgot to try it. Also why do they do that what happens if i lose my remote and need to get into my car.
Hold the key in the "on" position for 30 seconds.
 

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Ok I forgot to try it. Also why do they do that what happens if i lose my remote and need to get into my car.

Unlock the door. Open the door. Allow the alarm to sound for the 30 seconds or however long. It will shut off eventually.

Get in the car and it will start normally after the alarm stops.
 
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