yes
The Daewoo had NO transponder on any of their vehicles from 1999-2002. Incorrect. The Daewoo Leganza had a transponder option in 2001+, as did the Lanos. The Nubria had a transponder option in 2000+.
Requires special programming by dealer or locksmith. Locksmith is cheaper.
You MUST take the vehicle to a professional (dealer or locksmith). You cannot just buy a "transponder" key online and program it yourself (like you can for a number of domestic vehicles) for a Nissan. It sucks, it's expensive (about $200 in my case), but that is how it is.
Locksmiths have transponder detectors that read if a transponder is active within a key. The device we have is called "TD3AII Transponder Detector" by Ilco.
Remove the immobilizer unit?
no. required computer to be plugged in to the car
The dealership can generally program a new transponder key based on the VIN. Most good locksmiths can reproduce the key, but would need the original to do so.
A Toyota Matrix transponder key is factory programed. At times this programing can fail. It is a quick process for the dealership to reprogram the key. A lost key and transponder will cost approximately $100 to replace depending on model.
the transponder is in the head of the key ther are about 5-7 parts that are conected on the car that control the key and the reading / from a loccksmith
Locksmith or dealer
no