As one who has suffered the troubles of a failed handle bar control assembly, I echo what has been stated above. Although BRP does troll this site, #1 call customer care - you stated that your trike is under warranty and that means the dealer is going to BRP for the warranty parts. BRP has some level of awareness, albeit maybe just an electronic paper trail for the parts. When calling Customer Care specifically ask about "the warranty for the newly installed control module. Does the warranty on that part run out when the manufactures warranty expires?"
I asked these questions of BRP and my dealer - the response that I got from my dealer was that if this module fails within the next 24 months , we will replace it free of charge. That was not the BRP answer. It is my belief that when a part is replaced under warranty, that new part should have some guarantee with it.
With the current failure rate of the control modules across model years BRP and its associated manufacturing partners worldwide need to make better parts ... period. When the left control module died on my 2018 RT, its first noticeable problem was the ability to downshift manually - followed shortly by other glitches. The final post-mortem on the part put the failure down to poor manufacture waterproofing. Months later I was told that they had replaced multiple modules for the same reason - poor manufacturing standards / quality control.
Anyway - Call Customer Care - I have had decent experience with them.