migz123 said:
You must take it to the dealer and they will reset the system for you to allow you to start the bike with the new keys ... they are the only ones with the correct equipment to do so.
I am afraid that will not work! According to a source at Magneti Marelli, there is only one guy at Magnetti headquarters in Italy that knows how to reset the immobilizer code in the ECU.
If you think about it, it makes sense. The only reason to have an anti-theft device is to prevent people from stealing a bike and switching the ignition key assembly. I guess Magnetti Marelli is afraid that if the capability of resetting the code is given out, it might eventually get into the wrong hands.
At the factory when a virgin immobilizer is first turned on, the VERY FIRST key that is used to turn the bike on, becomes a master key. There are no physical differences between the black key and the red key. The red color is for the owners to distinguish which key is the master key. The immobilizer then generates a code that is stored in the ECU.
Every time the red key is inserted into the ignition switch, the immobilizer then recognizes that the next key being used is going to be programmed. The immobilizer can recognize and program up to 8 keys, including the master key. Every time the RED key or a programmed key is used, the immobilizer generates a similar code as the code generated the first time the RED key was used. The proper matching of the code stored in the ECU and the code generated by the immobilizer is what causes the ECU to allow a bike to get started when a key is inserted into the ingition switch.
If an unrecognized key is inserted into the ignition switch or a different ingition switch and immoblizer control box is used, the immobilizer will not provide the proper code to the ECU to enable the bike to get started. If you are buying a new or used ignition switch with a red key, it should also include the matching immobilizer control box and the ECU or it will not work.
On the bikes with the new digital dashes (5A ECU) [2004 and later model years] the dash has the immobilizer function built into it, there is no longer a separate immobilizer box. This means that the ECU is now mated to the dash. So losing keys just got a lot more expensive. If buying new or used parts you would need the red key, dash and ECU as a matched set.
BTW, the communication between the immobilizer and ECU is encrypted serial. It means that the actual communication is ALWAYS changing, in that you cannot monitor and capture the signal coming out of the immobilizer and play it back electronically to try and fool the ECU.
Your other option is buy an FIM ECU, but you will lose the functionality of the immobilizer.
-Fariborz