It might be the belt. Well known issue.

https://www.infinitiq50.org/forum/problems-solutions/124821-vr30ddtt-belt-tsb.html

 

Yea gonna take it to the dealer and have them check it out

 

Where do you hear the squealing from? The Engine bay I assume?

But yes the accessory belt (AKA A/C Belt) is the most likely culprit, it's a fairly common issue with the VR30 motors, bring it in and have the shop confirm/replace the belt.
Also align the compressor as per the TSB they have for the work.

 

Yes engine bay, and yea that's what I plan on doing so hope that's all it is

 

Wish ya luck then sir, keep us posted on what the dealership says so we can track issues.

 

Hey guys for anyone curious about the outcome of my 2018 Q50's issues I'll briefly explain what happened below..
So the deaership explained the TSB is specifically for early 2016 models through 2017 models only, and that they still checked to ensure there was proper alignment which was good.

The issue was actualy a leaking water pump which may have led to a glazed fluid on the accessory belt creating the noises I was hearing.

I'm now curious if any other 2018 Q50 owners have had this occur or if this was an outlier case

 

Yes, there have been a few posts about leaking water pumps causing the belts to squeal due to contaminating the belt surface. Nothing widespread though.

 

I'm not sure there is a proven correlation between belts snapping and where the indicator is on the belt tensioner. Those that have had their belt fail, have reported a lot of different conditions related to the tensioner.

 

I'm not sure their is a proven correlation between belts snapping and where the indicator is on the belt tensioner. Those that have had their belt fail, have reported a lot of different conditions related to the tensioner.

Including no relation at all to the tensioner.

 

I had this same problem. I replaced the belt Immediately. Took 5 mins from the bottom of car. Fixed my issue

 

Any tips for belt replacement?

 

I have this issue rn and thought it was the turbos, they needed to be replaced but this sounds still happening