Electropulse
From MediaWiki
An electropulse is an aspect of Transformer physiology and, if fading, meant they were slowly dying.
- It seems comparable to a Human pulse....
Fiction
Generation 1 cartoon continuity
When Optimus Prime was heavily damaged after a Decepticon attack, his electropulse was fading rapidly and would have meant his termination had he not been repaired. Divide and Conquer
Marvel Comics continuity
There is a device showing Powermaster Optimus Prime's electropulse on his destroyed torso. Still Life!
