How come my car won't start after resetting the ECT? on 1998 Toyota 4Runner

I bought new car remotes for my 4Runner and was instructed to reset the ECT and now my vehicle won't start. How do I fix this problem?

Asked by for the 1998 Toyota 4Runner
scan anti theft module or have remotes rechecked. is the alarm system aftermarket?
It's stock and original alarm.