Originally Posted by ECU-MAN";p="106583
there are two types of Honda Factory imobilizer system
1 uses the red key system the other works the same but woth out the red key
the red key will not start the car as you guys have found out, trying to start the car with red key will not do any damage, it will not wipe the black keys from your imobiliser unit. the red key will only be used when the Honda dealer needs to add extra Black keys to your car, the red key has to be inserted once the tech is told to insert it by the PGMFI tester which is used to program new keys within 30 sec . ( they now use the HDS tablet PC thinggy ) then they insert however many black keys you may want to start the car. then the red key again to compleat the lern proccess..
system 1 had red key for that purpose only. if you loose your red key it will cost you. you have to buy a new imobilser unit which cums with an uncut red key.. the imobiliser unit and the red key are a match pair and cannot be mixed and matched, in other words the imobiliser unit is useless with out the red key. you used to have to buy the whole lock set once apon a time if you lost your red key.
system 2 does not have red key, it was 1st introduced in the 98 Accord / ledgends / oddesey. you could program the imobiliser unit in a same type of manner with out the red key. I think all 2000 cars and on have system 2 no red key.
with both systems your could loose 1 black key and have it removed from the imobiliser unit. that lost key will open the car, turn the ignition but she wont crank or start if you push started it.
I hope this clears up all your thoughts on the Honda imobiliser