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Infiniti Service Bulletin regarding Drive Belt issue/failure

107K views 70 replies 23 participants last post by  Bevo  
I'm not sure if it's the drive belt, but mine makes a constant clicking noise when the engine is running. I've also noticed there's a clicking (different/same?) when I just have ACC on. Has anyone else noticed this? I had my dealer check it out. The tech said it was normal, but couldn't tell me what it was or why, so I didn't come away feeling very assured.
The clutch on the A/C will click as the compressor is engaged and disengaged, but it's not a constant click. Mine only makes bizarre sounds at start up but it has always done this.
 
For those not in the Q50/Q60 FB group, someone just posted the official Infiniti Bulletin sent out to dealerships regarding the timing belt issue; check your VIN range/manufacturing date to see if your Q60 is affected, or just take it in to your dealership if you want peace of mind.

This issue has been taking out Q50 Red Sports (same engine in Q60 RS 400s obv) left and right for a while now...there was another thread here with one example of a Q60 that had this happen, but that's the only case of an affected Q60 i've seen so far...it's only a matter of time though if you have an affected vehicle probably.

People will be covered via warranty/lemon laws, etc., but this is still a potentially dangerous issue depending on the road situation, etc...always good to be aware!!
Thanks for posting. My VIN is a later model.
 
I visually inspected mine. The gap is at spec. It's the pulley in the center of the front the engine. It's a different drive belt than the one pictured as the outside of it is smooth and uniform in color.
 
Mine is post-SB, too. And for the record, it is a Drive Belt, not a Timing Belt, alignment issue. Big difference. Oh, and FWIW, the VR30DDTT engine has a Timing Chain.
You guys are right, sorry, it is indeed the Drive Belt...i'd edit the OP if I could! :)
Well if you want to get all technical it's an Accessory Drive Belt :D
 
So are these being swapped by the dealer? Or are they waiting for something to go wrong first? I believe my VIN is within the range
There is no swap. The belt is realigned if it's out of alignment. Contact your dealer if you're concerned, or look at the first post and inspect the clearance on the belt yourself. It's a visual inspection as seen in the pictures.
 
Maybe I'm reading too much into 'taking out cars' to mean engine replacement. I would expect at worst it stop driving the alternator and the engine shuts down from dead battery but no real damage.
The belt could be damaged or apparently in extreme situations the belt could catch fire if it rubs. A car fire could take a car out, but yeah, the drive belt itself won't directly damage the engine.
 
Let me chime in on this!!

I have a Q50 Red Sport, bought it brand new.

Every time they checked it, they said it was within alignment. It doesn't matter, it fell apart anyways. There is something seriously wrong with these motors.

Had the screeching belt issue. Eventually they replicated the issue. The misaligned pulley had burned out the water pump.

Trip 1, 2, and 3: replaced water pump, drive belt, drive belt pulley, AC compressor pulley, and tensioner.

This fix lasted about 5 months.

same thing, whistling screeching noise at 3200 RPM on long pulls.

Trips 4,5, and 6: Dealership thought it couldn't be the belt again, since it was "in spec", but they found oil in turbocharger, bank 2. replaced turbocharger, AF sensor, EGT sensor.

Got the car back yesterday. Alignment is off because they didn't do an alignment after removing the subframe. A piece of plastic flew off my car on the freeway because they didn't clip the shroud in properly.
I get on the freeway and the belt screeches again!!

So back to the dealership, they keep saying they have to personally hear it screech, but even then, the last replacement only lasted 6 months. So now I'm back to fighting Nissan over these self-destructing belt issue, and pursuing a lemon law claim with them.

tl;dr- 2017 Q50RS, 17k miles, blown through serpentine belt, tensioner pulley, AC pulley, water pump, turbocharger, AF sensor, EGT sensor, and it STILL screeches and smells like a burnt belt at 3200rpm. No replacement part related to the belts has lasted more than 5 months.
Where are you located?
 
It's not so much about Q60 forums, it's about VerticalScope and an issue I had with them years ago.

I don't mind telling information via PM tho. Do you work at a dealer?
I don't work for a dealer. The more info members have, the more helpful it is to determine if this is an isolated problem or more widespread.
 
So does this issue appear to not affect 2018 Q60s or are they just too new to know for sure?
The recall was probably addressed during manufacturing all models built after May of 2016 which made it no longer an issue.
 
Pretty sure it just depends on how modded you are and/or how hard you drive the car. My VIN is not affected by the recall but it still chirps. I know if I repeatedly ran the car hard, it would eventually snap.
Maybe you should have the A/C Compressor realigned as per the Service Bulletin.
 
Seriously man? If the belts are slipping on bone stock cars, there's a flaw. Why the passive-aggressiveness?
It could be a batch of defective belts from the supplier. I wouldn't classify that as a design flaw. Seems as if there were a flaw in the design of this car more than 50% produced should be affected.