Did you buy the ecu with the immobilizer box, ignition lock tumbler and key? Or just ECU?
Otherwise you need to have your current key and a new immobilizer box programmed to it by the dealer. Immobilizer box can be fiund under the hvac control unit.
A 556WU is for bypassing the immobilizer for a remote start alarm to start the car. The way it works is a second key that is programmed to the ecu goes in the 556 box and when the remote start unit is ready to start the engine it (the 556) sends the keys information to the ignition tumbler fooling the ecu into thinking theres a key in it, once you enter the car and drive off the 556 is deactivated and the first key (now in the tumbler) takes over. As far as the problem you're having goes, the 556 will do nothing for you.
Bookmarks