I lost key to my Spyder gt 01 swapped out ecm , lock cinder and immobilizer as well car cranks but won't start. Why

SOURCE: I need the key to start engine or by-pass the immobilizer.

There is a chip in the key on the newer cars. The dealer should be able to send your information to Hyundai and order a new key. Pricey. Check with another dealer.

SOURCE: immobilizer

If there is a blinking car icon with an "X" over it. This icon means the Immobilizer has been activated and hence won't allow the car to start. It could be due to a bad SCU, Start Control Unit. The SCU is actually the ignition switch on these cars.
Most of the time it's triggered by the anti-theft system..You can try this trick i learned that the dealers won't tell you...try locking and unlocking of the doors five times with the remote to reset the immobilizer and see if this helps.
Good luck..i hope this helps...please take a minute to rate me a fixya.

ahmed

• 72 Answers
• Posted on Sep 16, 2009

SOURCE: 2005 Mazda 6 Immobilizer System

try the spare key if the problem still persist .
then you have to diagnose the immo system by scan tool to know which DTC is recorded

SOURCE: Volvo S60 R will not

Pull the immobilizer fuse.wait one minute then reinstall.This only works 75% of the time.

SOURCE: 03 TOYOTA RAV 4 CRANKS

have scanned if light is on. it may be a bad or failing crank sensor. for the sensor controls timimg, it will stop engine while driving. have a good day!!