I’ve just purchased a 2011 AWD Kluger with 70.000km on the clock. It’s been a city car and rarely been on the freeway. I’ve noticed a faint whine between 60 and 70km/h. I’ve read old posts about this issue and sometimes it was fixed under warranty but not sure what the problem was. My guess it’s either the transfer case, rear diff or front diff. Has anyone here had this issue, and is it something that needs attention immediately? I’m happy to put up with the noise as long as it isn’t do untold damage, or gets super loud.