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Discussion Starter · #1 ·
Hi...

I'm not sure if this is the right conversation group, based on my question. If not, please move to the right group.

I own a 2014 Nissan Pathfinder SL, which was purchased brand new in 2013.
  1. About a year ago, I noticed that when I leave my vehicle on AUTO or LOCK (4-wheel drive); and turn left, right or reverse, there are sounds coming from the back of the vehicle. Gear turning sounds and the back of the vehicle vibrates.
  2. When turning left or right, it's a grinding noise.
    When reversing slowly, it's a whistle.
  3. No sounds when driving straight.
  4. This sound is not there when I leave the vehicle on 2x2.
  5. The odometer on the vehicle reads 126k.
  6. Recently, I had the transfer case fluid flushed out.
  7. I'm debating about flushing the rear diff oil. I have an appointment for it next week.
  8. The warranty on the vehicle has expired.
Does anyone have any ideas?
 

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Super Moderator
2015 Pathfinder SL - Tech 4WD
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2,769 Posts
Welcome to the forum !

What you describe is similar to what others have found to be a bad magnetic coupler which is mounted on the rear differential and engages only when 4WD auto or lock are selected. It is an expensive part.
 

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2019 Nissan Pathfinder SV 4x4
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876 Posts
Yep. Sounds like the coupler. Like said, it's basically a magnetic clutch that goes full on or full off. There's "sealed' bearings in them that will wear out over time. I've seen enterprising auto techs online figure out how to get them apart and replace bearings for other make/models, but most shops will just want to replace the whole rear coupler. I've seen good used ones available mail-order (pulled off of wrecked pathfinders) for a few hundred dollars, then figure on an hour or two of labor, etc. This is probably a $3000 CAD Nissan dealer job.
 

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Discussion Starter · #6 ·
Thanks for your recommendation.. Got the rear diff's coupler replaced, and the problem's gone away..
 
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