Rav4 CVT FAILURE

[Janine]

Hello there hoping someone can help. I know very little about cars and mechanical things but trying to figure all this out and I have been told I may have a case to take on Toyota.

I have a RAV4 2017 front wheel drive and I've bought it second hand in Feb 2022. Recently it has developed a droning noise and I've had it inspected by a mechanic who has said the CVT is failing and needs replacement. It's only done 81000km which seems poor. It hasn't had all the services at a Toyota garage but has had regular services, but is no longer under warranty. 

I am going to get my car inspected by a Toyota dealership and then if the same outcome I will be contacting Toyota Australia to see if they will assist with replacing this as it appears it is a problem with the cvt system and there is no fluid swap interval mentioned in the service manual. I've been quoted $7.5k to replace the cvt system with a second hand one from another model but obviously reluctant and too worried to do this. 

Please can anyone help?

Thanks in advance