2010 Tacoma Cranks but did not start

Toyota Team,
My Tacoma would not start & I spent a week pulling my hair out. Great Thanks goes out to maxamillian 2345 in this thread: https://www.tacomaworld.com/threads/07-cranks-but-wont-start-help.267194/
Because after all the work and headaches, I was using the spare key for the first time. The "Immobilizer System" apparently does not like that key. I used my normal key and it started just fine.
I have never heard of a key that allows cranking but will not start apparently b/c the PCM does not send injector signals unless it likes the key. What kind of BS is that??!!
In the past the key would not turn the ignition switch.
Anyway, I hope my thread helps someone in the future. If your rig has an Immobilizer System, make sure you test all your keys to find out which keys it likes and which ones it doesn't.
Thanks and Happy December and Merry Christmas! Tim

 

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