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Hi,
I have a 1999 Lantra J3 series that has a aftermarket immobilizer fitted by Hyundai(Australian models) i have been told, so not sure if the same applies to same model in differnet countries?

Anyway, the immobilizer is armed/disarmed by the remote. As my 2nd remote has died & the dealer holds you to randsom & wants $200 to replace it, I would rather by-pass it, as these remotes are flakey & dont last.
Being a technician, I could repair the remote as there is a micro-controller PIC ic in the remote, but the dealer would not release that info(code),so the cheapest option is to by-pass it.
Any help appreciated. :)
 

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If yours is the same as the 2000, then it is under the steering column; the actual immobiliser unit is just behind the radio. trace the wiring under the steering column and you will find that there are two wiring plugs with some black wiring in between. connect the two plugs together.

there is a second wiring harness for the central locking. you may wish to keep this one.
 

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My Trajet immobiliser has also stuck on and I am without my car?!? :(
My friend has a garage but he is having problems by-passing the alarm - is this the same?? I would rather give him, my friend with a small local garage my spondollies rather than the hyundai rip off merchants!!!

PLEASE HELP XXXXX :liebe011:
 

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You can't bypass the immobiliser; that's the point of it. The immobiliser is matched to the ecu and the two have to be changed together. The only way I know of to bypass the immobiliser is to pay a car electronics specialist to doctor the ecu so that it no longer needs the 'all good' signal from the immobiliser.
 

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Hyundai Lantra Immobilizer

i have just overcome this problem myself on a 1999 Hyundai Lantra J2 sportswagon
all lantra's after being imported in to the country needed to have an immobilizer fitted before being sold, so there were fitted with after market units by Huyndai dealers.
Under the steering wheel there is a removable panel, behind it you will see a little tin box, possibly covered in foam, with wires coming out both ends.
the box is pop riveted together, drill out the rivets and you will find a 6 pin connector, the coloured side is power to the iginition, the other side has black wires coming out - this is the immobilizer.
coming down the steering column there is another 6 pin plug, coloured one side and black wires coming out the bottom side.
unplug both 6 pin connecters and plug the two coloured connectors together.
Immobilizer bypassed!
 

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That's interesting; maybe they do things different in Australia. Not much of an immobiliser though if you can just knock the box off and plug the cables together. My understanding of the UK system is that the ecu and immobiliser are matched and without the correct code, the ecu won't function.

Hopefully the OP will come back and let us know the outcome for him?
 

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i have just overcome this problem myself on a 1999 Hyundai Lantra J2 sportswagon
all lantra's after being imported in to the country needed to have an immobilizer fitted before being sold, so there were fitted with after market units by Huyndai dealers.
Under the steering wheel there is a removable panel, behind it you will see a little tin box, possibly covered in foam, with wires coming out both ends.
the box is pop riveted together, drill out the rivets and you will find a 6 pin connector, the coloured side is power to the iginition, the other side has black wires coming out - this is the immobilizer.
coming down the steering column there is another 6 pin plug, coloured one side and black wires coming out the bottom side.
unplug both 6 pin connecters and plug the two coloured connectors together.
Immobilizer bypassed!
I followed these instructions for a 1999 lantra sedan and it worked a treat.

I had this problem when the car battery went flat (Really flat) due to lack of use. So I pulled out the battery and charged it. The next day I returned the battery and then the keyless entry didn't work so the immobilizer didn't disable. Now I have it bypassed we can use the car.

All I need to do now is somehow re-teach the fobs to the keyless entry module and re-connect the immobilizer.

Does anyone have any idea how to do this and hyundai want AU$140.00 to do this and I'd rather not throw away the cash if I can avoid it.

Gerard
 

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i have just overcome this problem myself on a 1999 Hyundai Lantra J2 sportswagon
all lantra's after being imported in to the country needed to have an immobilizer fitted before being sold, so there were fitted with after market units by Huyndai dealers.
Under the steering wheel there is a removable panel, behind it you will see a little tin box, possibly covered in foam, with wires coming out both ends.
the box is pop riveted together, drill out the rivets and you will find a 6 pin connector, the coloured side is power to the iginition, the other side has black wires coming out - this is the immobilizer.
coming down the steering column there is another 6 pin plug, coloured one side and black wires coming out the bottom side.
unplug both 6 pin connecters and plug the two coloured connectors together.
Immobilizer bypassed!

I think i have the foam coverey Blue/Black connector also on a Accent LC 2003 ( 8252-379).
Does this work there also?
Is this the one in the picture?

The Accent in question gets P1610 errors for the immobilizer an refuses to start now and then ....
So instead of buying a new one for that old car, disabling seems like a good way to me. Its just not worth the cost on that old car.
And of course the car currently does not work ...


Thanks.
 

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The LC Accent uses a totally different system and it's practically impossible to bypass.

BTW, the connector in the photo looks like the ignition switch.

Scottie.
 

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Do you know if the 96-00 UK Lantra has the system that can be bypassed? I am looking to swap an ecu but I guess that won't work because the keys are matched to the ecu; is that correct? In which case I would either need to change all the locks as well or bypass the immobiliser.

I have the Siemens ecu PN 39100-23766. Inside all th ecomponents are covered in brown rubberised goo so not really possible to take it apart to inspect solder joints. See attached pic.
 

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Hi Ed, I was following your other thread but didn't really have anything worthwhile to add.

Since you have a donor car you can swap all it's immobilizer components to the defect vehicle. You'll need the engine ECU, the immobilizer ECU and the ignition keys from the donor. Replace the ECUs then remove the immobilizer ring antenna from around the ignition barrel, but leave it connected to the harness. Put the ignition key from the donor car in the center of the ring and use the car's own key in the ignition to crank the engine and it should start.

I recently advised someone else about immob bypass over at the Amica forum and he successfully got the engine running : http://www.hyundai-forums.com/amica-atoz-forum/451913-hyundai-atos-1998-a-3.html


Hope that helps.

Scottie.
 

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Thanks. I don't know where the immobilizer ECU is? I've only found the main engine one.

A good idea to use the donor key and antenna in that way. Is the antenna easy or tricky to get off in one piece?
 

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The Immob unit will be behind the driver's side dash. It's a black box a bit larger than a 20 pack of cigs and it usually says immobilizer control on it.

The ring antenna is secured by a single screw but you need to remove the steering cowlings to get at it.
 

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Hi,

I have a Hyundai Accent 1999 module. I had a dead battery on the car and ever since then I have been have problems with the immobilizer that does not switch off, when trying to start the car. I replaced the battery of the car and the replaced the batteries of the remote, but still have the same problem with the immobilizer not switching off when trying to start the car.

Please, any assistance will be appreciated.
 

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Hi,

I have a Hyundai Accent 1999 module. I had a dead battery on the car and ever since then I have been have problems with the immobilizer that does not switch off, when trying to start the car. I replaced the battery of the car and the replaced the batteries of the remote, but still have the same problem with the immobilizer not switching off when trying to start the car.

Please, any assistance will be appreciated.
Welcome to the forum 00000732

You'd be best to post in the appropriate Accent forum. Others with your model of car will be more likely to see your post if it's there. It would also help if you filled in your user profile with details of your car, it's engine, etc and where you live. Vehicle security systems differ between markets so knowing where you live is particularly important information to your question.

Regards.

Scottie.
 

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Hyundai Lantra 2000 broken fob

Just want to say what a great site this is and to thank everyone for taking the time to help others. My fob wouldnt work after changing battery ...checked and re checked against other fob...no go...so started doing some research and spoke with heaps of people...nothing really positive to go on except get a new fob and get both keys and fobs synced at a dealership which for an old vehicle was quite expensive. So I thought after researching and finding out the alarm and fob were an after thought and that the wires under the steering wheel were easy to access that cheapest option was to get someone to bypass the use of the fob. Bingo auto electrician took 30 mins $50 no more fob and just use key to open and lock doors..... pays to research..but it wasnt till I found this site that it became obvious to me it could be done...so thanks everyone much appreciated. Sue
 
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