2000 Buick Regal "replacing smart key battery 2011" Questions

smart-key-not.html ---------- 2007 Toyota Prius: Reprogram Remote Keyfob? http://whatisbyme.blogspot.in/2012/05/2007-toyota-prius-reprogram-remote.html ----------- Pin that holds the flick key part to

...smart key and cannot get car started....tried putting the smart key in the console receptacle, but still will not start. Battery seems to be fine; think it has to do with security system as the brake ...

key off . rested.
engine is dead because (at least) the starter is dead, it will not crank, this fact not told means battery is dead.(yes the can be intermittent, seen by me vast like it)
and we

key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to Section 418-00 to diagnose no response from the PCM. Carry out the network test. If the scan tool responds

smart key need to be re-programmed after battery replacement? Nothing - still did not work after new battery used spare smart key - not sure if it needed a battery at all https://www.youtube.com/watch