2006 Mazda 6 key issue

gregmran, Sep 12, 7:31pm
Hey folks. Have just replaced the casings for my keys. key will lock and unlock the vehicle but will not allow it to start. Any ideas on my next move? Cheers, Greg/.

kazbanz, Sep 12, 7:36pm
Grab the OLD casing and hold it VERY close to the key in the ignition.see if the car starts.--you might have to swap ends
I'd put money the chip is in the old casing.

gregmran, Sep 12, 7:57pm
Just tried that. no go. Have tried the shut/open/on/off procedure and it does everything its supposed to, except the security light flashes and it won't start.

supernova2, Sep 12, 11:50pm
What happens if you swop them back?

gregmran, Sep 13, 6:12am
nothing. tried that

bigfatmat1, Sep 13, 7:45am
Have you dropped a the tiny transponder out of the casing?

saxman99, Sep 13, 8:33am
This. Happens very easily without being noticed. Search the floor where you took apart the old key very carefully.

gregmran, Sep 25, 2:42am
Right you are sir!
What a flaming idiot! Thanks all for your help