What Model BMW?

[StraightSix]

where can i find the reprograming/re-initialize steps?

It's in the Owner's Handbook (re: Keys). But I just browsed the online handbook for the US version and can't find the same info. It seems that the user-programming feature of the Euro E46's immobilizer isn't on the ECU of the US E46. From the wiring diagram I know that the ECU's are different ... I just didn't expect this bit. Let's just hope the function is there.

From the E46 Owner's Handbook:

Whenever you have been handed a replacement key, insert it into the ignition lock and turn it once to position 2 (ignition switched on), then back to the home position, so that the electronic immobilizer "accepts" the new key.

As for re-initializing the 3-button remote (BMW logo/button in the middle); from the E46 Service Manual:

1. Open the centrol locking system (ZV) using the key.
2. Get into the car and close all doors.
3. Using the car key, switch the ignition lock briefly to ignition position 1 and then switch off again. The switching time must remain under 5 seconds, otherwise the system is not ready for initialization.
4. At the radio transmitter: Press button 2 and hold in.
5. Press button 1 three times (in a space of 10 seconds). Button 2 must remain held in.
6. Release button 2.
7. The ZV signals by means of "Locking" and immediate "Unlocking" that a radio transmitter has been successfully initialized.

Note on remote buttons:
Button 1 - Arm/Door lock
Button 2 - Disarm/Door unlock
Button 3 - Unlock luggage compartment

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Good job there by Speedyfix ... maasahan talaga.