spare key saga - final installment!

Ok. I have been to my Mazda dealer for the fourth time today to get the
spare key coded into the car. Two attempts have failed. A replacement
immobiliser also failed to get the key to code in. Finally they get a
replacement key and still no luck. They cannot get another key to code
into the car. Period.  So I’m now back to square one with only one working key
and two spare door keys which won’t start the car. As far as Mazda is
concerned that is the end of the story. I’m now left with trying to
find how to immobilise the immobilser!. Anyone got any ideas?

Steve

 It sounds like you need the services of a GOOD auto electrician. Some one who only works on car electrics, not a Jack of all trades mechanic.