Question about 2001 Daewoo Lanos

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I have the same problem with my Daewoo Lanos immobiliser. My key transponder suddenly stopped working. I tried manual overriding the immobiliser but still the car is alarmed. I'm doomed. I don't have a spare key/transponder. Do I need to get another transponder key? Or check the existing one?

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  • shawnie888 Oct 01, 2010

    THanks Kap, This thing happened when I dropped my keys before I went to my car. And then my car does not want to start. THe roadside assistance guy checked my battery and also restarted my battery and it did not work.
    So do you think it's worth spending 100 bucks to get another transponder done?
    What if it doesnt work?
    How do I re-programme the key or getting the car reprogrammed to a new transponder if I get it off ebay?

  • shawnie888 Oct 01, 2010

    Thanks for the advice so far Kap. I appreciate it. The transponder for my Daewoo is actually not inbuilt in the key but is a separate "rod" like thing. This is the size of a AAA battery. It seems different to the usual kind of transponders inbuilt in keys.
    So if the chip in the transponder is not working, can the lock smith get to make another transponder with the same chip circuitry as this original one which is not working (if this is the main problem and not my immobiliser in my car).
    The other thing is that I may not have mentioned to you before, I actually dropped the key on a hard concrete surface just before getting the car. So that's why I strongly believe its the transponder which is not responding.

  • shawnie888 Oct 01, 2010

    Thanks again Kap. Moreover, I have tried to override the immobiliser many times and failed, with the override number and the immobiliser manufacturer's guide. So how come the override did not work. And if I get a new transponder tomorrow (now its 0045, midnight in Australia). Would it still work since I tried overriding it?
    Also, I did not really get what you meant in your 2 replies ago "If he says he can get the key reprogrammed then order the key from eBay also this keys can be made by locksmiths too.If you have non working old key with you"
    So you saying, if a locksmith can get reprogramming done, get a transponder from ebay and get it reprogrammed? Also, get the old key re-programmed? So if these keys are re-programmed, will they work with the existing immobiliser of the car still? So all these can be done by the locksmith with just the old key itself? No need to bring in the car to him?

  • shawnie888 Oct 03, 2010

    Thanks Kap, it was my transponder which had deactivated itself. I manged to make a copy of it as the information in the chip had still been retained.
    So now the car is all fine.



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The transponder key has a chip in it.That is a programmed chip.But if this transponder key is not working then ,you will have to get the another transponder key,the other option is you can get the another key made from the local lock smith and then get the key programmed from the lock smith or from the dealer.Some lock smiths have the key programming device but if there is no lock smith in your area then you will have to get the key programmed with your dealer.Also you can try your preset key getting it re-programmed and check if it supports. ----------------- The exact procedure in which the transponder key works is as follows:---- Transponder key

Transponder keys may also be called "chip keys". Transponder keys are automotive ignition keys with signal-emitting circuits built inside. When the key is turned in the ignition cylinder, the car's computer transmits a radio signal to the transponder circuit. The circuit has no battery; it is energized by the radio signal itself. The circuit typically has a computer chip that is programmed to respond by sending a coded signal back to the car's computer. If the circuit does not respond or if the code is incorrect, the engine will not start. Many cars immobilize if the wrong key is used by intruders. Chip Keys successfully protect cars from theft in two ways: forcing the ignition cylinder won't start the car, and the keys are difficult to duplicate. This is why chip keys are popular in modern cars and help decrease car theft. Many people who have transponder keys are not aware of the fact because the circuit is hidden inside the plastic head of the key. THIS IS JUST FOR ADDITIONAL KNOWLEDGE ((((((On the other hand, General Motors produced what are known as VATS keys (Vehicle Anti-Theft System) during the 1990s, which are often erroneously believed to be transponders but actually use a simple resistor, which is visible in the blade of the key. If the value of the resistor is wrong, or the key is a normal key without a resistor, the circuit of the car's electrical system will not allow the engine to be started.)))))))))))))).


This means that the programming of the Transponder Key has been corrupted or the Programming data of the Key in ECU ( Electric Control Unit ) has been lost or not responding. You now have to get a new Transponder Key. You can get it on E-bay for $30. After you receive it, reprogram the car to the New Transponder Key to the ECU By the lock smith or from the dealer.


Thanks. Keep updated for any more query. You can rate this solution and show your appreciation

Posted on Oct 01, 2010

  • raj somaiya
    raj somaiya Oct 01, 2010

    Yes it's worth spending 100 bucks to get another transponder done.But before that,i suggest going to the local lock smith and asking him if he has the reprogramming machine for the car key.Also if he does not have then ask him ,who has in your near by area and ask him.If he says he can get the key reprogrammed then order the key from eBay also this keys can be made by locksmiths too.If you have non working old key with you.

    There might me local techs doing jobs with transponder key.For example click this link directly.Get the details checked.----------

    You can also call this technician for more help:---

    Need a Transponder Key Programming? Call Car Locksmith Dallas at (214) 453-2376. Highly qualified technicians specialize in car transponder key replacement, chip key programming, switchblade key replacement, and carry a wide variety of transponder key blanks.


    thanks for keeping updated with your query.

  • raj somaiya
    raj somaiya Oct 01, 2010

    Yes ,much possible that the transponder is got faulty due to dropped.Much possible.




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