Good luck on getting any info. Franlac a forum member just went through this. Autel CS told him they did not know. Hmmmm, I think some BS was going on by Autel CS.
He tried motors from another quad he had, bolted right in but would not start up.
Because he lives in France it would have cost a fortune to send in for repairs, just like you I would imagine. They ended up in the end offering him a refurbished unit for free and all he had to do was pay shipping and duties.