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Discussion Starter · #1 ·
Was wondering if any owners had their rear coupler replaced?

I took my JX in for 3K service, was told that rear coupler was leaking fluid and would need to be replaced. The part was ordered and replaced at no cost to me. After 2 days I started getting "AWD Error". Dealer asked to bring the car back. Investigation revealed that they need to replace rear coupler again! I got another call after a day saying that someone from Infiniti was coming to check my vehicle (this Thursday 07/26). Not sure if this is good news or bad. Any similar experience with any other owners?
 

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I think 2 other members had to have their rear differential replaced . Did you notice anything wrong with the awd system? I think some other members mentioned thAt they heard a rattling noise when they made sharp turns.
 

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I think 2 other members had to have their rear differential replaced . Did you notice anything wrong with the awd system? I think some other members mentioned thAt they heard a rattling noise when they made sharp turns.
Waiting for the rear diff to come in. For me the noise was more like a rumbling sound at the rear of the car when doing sharp turns.
 

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Discussion Starter · #4 ·
Never had an issue with the AWD till the first replacement of rear differential. Did not observe any sound or vibrations even after the replacement, just started seeing the AWD error. Seems like Infiniti is keeping an eye on this issue.
 

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My car was rumbling almost like the diff was slipping. It actually felt like the tire was rubbing on the wheel well on every turn. Found out the rear diff was binding, so they replaced it.
 

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Well i just got a call from my dealer saying the coupling assembly has to be replaced and the car is not driveable. I just bought the car in March and have really like it so far. I have been noticing a rumble sound/feeling when turning sharp and just thought it was AWD and me getting use to that or the CVT. I took the car in today for my first service and mentioned the noise. What a shock to have something like this in a brand new car. I was a bit concerned about buying a new model, but convinced myself that CVT, and all the new technolgoy was not completely new that Infiniti or Nissan had being doing some of this stuff in other models. The real kicker is hearing hte part is not even available in the US at this point and they are trying to get an ETA. I picked up a loanser this evening and I was surprised at the way the GM handled my concern. He said it was the first one he had heard about. I told him that a quick search on the web before I left the office showed a number of people talking about the same issue. His response was "if you look hard enough you can find something wrong with anything on the internet, even a lightbult on a Ferrari". He then asked "what do you want me to do". Not at all the experience that I had with the dealership in buying the care and the contact afterwards. Hopefully I caught him on a bad day.
 

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Front end grinding noise

I am glad to hear I wasn't the only one experiencing a grinding noise when turning. I have an AWD model, but my service advisor told me it was related to the front wheel drive and the track of the vehicle, which didn't seem right to me. I assumed it was something to do with the front end or transmission, but am somewhat surprised to hear it could be the rear coupler /diff. It appears to be getting worse, but i was told it wasnt a safety concern, or damaging the vehicle. Can anyone else provide additional information, or a status update on this problem?
 

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I am glad to hear I wasn't the only one experiencing a grinding noise when turning. I have an AWD model, but my service advisor told me it was related to the front wheel drive and the track of the vehicle, which didn't seem right to me. I assumed it was something to do with the front end or transmission, but am somewhat surprised to hear it could be the rear coupler /diff. It appears to be getting worse, but i was told it wasnt a safety concern, or damaging the vehicle. Can anyone else provide additional information, or a status update on this problem?
Its the rear diff. There's an issue with the first ones put in.

The part number has been updated to reflect the corrected diff. Infiniti if fully aware.

I just had my diff replaced for the second time. The first time the dealer was sent the old part number. My dealer ordered the second diff, but this time confirmed that they were being shipped the updated part for the rear diff.

Trust me...its the rear diff. Tell you dealer to quite messing around and call the tech help line and they will tell them its the rear diff.

Its starts with sharp turns, and will eventually get worse grinding slipping for any turn.

It'll take about a week to two weeks to get the diff in. If the diff arrives in a day, make sure they got the updated part number.
 

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Thanks for your quick reply...the information you provided was really helpful, as both the dealership I bought the car from, and the local dealer where I live were unaware of the problem. Thanks again!
 

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Hi. Im new to the group and Im having the same problem. My rear diff started leaking bad. My mechanic changed my rear coupler assy,genuine OEM parts,but the rear end wont move.Anyone experience the same problem? Do I need to take it to the dealer to get it flashed? Anyone have a resolve?
 
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