The blown-out motivator of R5-D4
A motivator was a critical component present in droids, for example, in R5 series astromech droids such as R5-D4, or in GNK-series power droid such as [EG-30]. It was also found in starships, such as the Millennium Falcon. The droid known as R4-G77 also possessed a motivator.
In the event of a malfunction, they were capable of explosively failing, potentially causing the droid to be completely inoperable. The motivator had an influence on the droid's allegiance; adjustments to the motivator could reprogram the droid's loyalties.