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Hi Carrie,
Same problem here.
I would LOVE to get everyone with this problem together to propose our cases to Toyota.
Called them yesterday to no avail. They told me to file a complaint with the National Highway & Traffic Administration which I did. Please do so as well. Takes about 5 minutes on their site with your car info.
There should be no reason why Rav 4 owners get a recall for the same issue while Sienna owners don't.
Sincerely,
Shawn
 

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I'm in the process of trying to get this issue fixed as we speak. I too heard the "whirring noise" and couldn't figure it out (thinking it was wheel bearings) and I've encountered several other Sienna's that make the same noise. I was about to chalk it up to a noise that is inherent these vans just make, but then I found this thread.

I spoke to a local garage that specializes in rear differentials and they said they have fixed many of these. So I just ordered the bearing 90363-95007 and when it gets in I'll have the garage replace it. $350 for labor (much better than the $2k repair). However, the garage said because of this issue it causes the fluid to leak which could potentially affect the clutch in the rear diff. Having only 55k miles on my 2011 he said it should be ok. I'm praying and crossing my fingers I don't need a new coupling.

I will post my outcome once I get it back from the garage.
Hello. Might you be able to share the name and contact information of the garage that you mentioned above? I have a question to ask them. Thank you.
 

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Hi I KNOW WHATS WRONG. So if you open the tires tools in the rear You will see BARE METAL You should put some insulation on ANY bare metal you see. Then if you have a Power liftgate then pop the panel and add some insulation tape on bare metal. the last thing is the liftgate it self pop the rear panel off then add insulation tape inside the panel. hope i could help.
 

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I had whirring noise as well in 2011 XLE AWD - probably drove for close to year with noise. Just had fix done by my local "driveline specialist" mechanic @ 119,600 mi - mechanic had not done one of these before but Thanks to ragerrl and note above did the work today without issue. Again to confirm it was $58 for bearing cost and $15 for deflector - and $198 in labor. I did have the differential fluids replaced as well while he had it up on the hoist. Really glad to have this done for a bit more than $300 instead of a $1000-1200 part from Toyota. Thanks again!
 

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2011 AWD Limited, same part, just quoted from local trusted shop nearly $3000. Part (new) is $2700, labor roughly $300. However, I have 199,000 miles on my Sienna.
 

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After reading this thread I went to my Toyota dealership requesting to change only the bearing 90363-95007. Dealership refused citing that this part is for the Matrix (even though it might fit on the Sienna), and even if they could install it they don't have the torque spec. They suggest to replace the entire coupler. Anybody run into this roadblock?
 

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Hi - I just joined to post about this repair. My wife's 2011 Sienna has the classic whirring sound. I described it once as being followed by a pack of angry bees! Anyway, since I didn't find a proper DIY for this, I will start a new thread and post what I did step by step.
 

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I am working on a 2012 Sienna to replace the bearing in the coupler but I cant figure out how to get the drive shaft disconnected. I have removed the 4 nuts but how do I back off the drive shaft?
 

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I have this problem as well with the 2012 AWD Sienna LE. I am going to the dealer today and I am afraid of what they will say. Did you get it fixed?

Everybody should complain to NHTSA and we can get a recall going and get reimbursed. It takes 5 minutes, I can't post the website because the host says it is spam, but go the NHTSA site and look for "report a problem."



I think I have this issue with a 2012 AWD Sienna LE. Definitely from the rear, a high pitched noise. Doesn't seem to come from one side or the other. I noticed it over a year ago when I got new tires but I thought it was the tires at that time because it was very faint, not so now. The van only has 60 000 km (37 000 miles).

My question to those who have experienced it is does the noise change with changes in throttle position? Mine doesn't and I would have thought this would change with throttle position. I even shut the car off in neutral on the highway and there is no change. I am not afraid to tackle this just want to be sure I am fixing the right problem. I would have thought it was a wheel bearing noise but I see not mention of wheel bearing problems for the sienna.

Thanks in advance for your assistance.
 

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I have a 2012 Sienna XLE AWD with 83000 miles. The same noise started about 3 months ago. I am going to file a complaint with NHTSA, hoping Toyota will issue a recall and cover the repair.
 

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I am working on a 2012 Sienna to replace the bearing in the coupler but I cant figure out how to get the drive shaft disconnected. I have removed the 4 nuts but how do I back off the drive shaft?
Well, I found my own solution. I just needed to be a little more aggressive with my hammer to break the connection loose after that I the rest was rather straight forward. On thing I did have issue with was the threads on the rear diff where the coupler connects were rather gunked up. I took some time to run a tap through the threads a couple times just to be sure they were clear.
 

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Had the same issue - whining started a few months ago. Took it to the dealer for some recall work and had them take a look at it... they said, sure enough, it's bad, and it'll cost $2200 to replace it.

I called Toyota since I was still under 60K, but since we're a little over 5 years, they didn't offer to help out. I ended up buying the bearing and having the shop replace it for about $200. Far cry from $2K, but still, for as many people as seem to be having this issue, it would be nice for Toyota to take care of it.

Thanks for the recommendation @ragerrl - swapping out the bearing has worked perfectly so far - no noise. A little disappointing that Toyota tried to milk me for $2200... if you run into this issue, definitely try the bearing fix first!
Hello! I have exactly the same problem with my 2013 Toyota Sienna LE AWD. The dealer quoted me for $2300 for for new Coupler assembly. I need help about where to order the bearings mentioned? Thanks for any help
 

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Hello! I have exactly the same problem with my 2013 Toyota Sienna LE AWD. The dealer quoted me for $2300 for for new Coupler assembly. I need help about where to order the bearings mentioned? Thanks for any help

Part #
90363-95007 only from toyota

Mite want to get some Diff Fluid as well and do a change.

Working on mine as we speak.

Need a press or a way to remove old bearing, put new one in with sylicon and ya should be good to go, I would recomend using the RTV Black

There are a couple write ups on the site!
 

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I'm in the process of trying to get this issue fixed as we speak. I too heard the "whirring noise" and couldn't figure it out (thinking it was wheel bearings) and I've encountered several other Sienna's that make the same noise. I was about to chalk it up to a noise that is inherent these vans just make, but then I found this thread.

I spoke to a local garage that specializes in rear differentials and they said they have fixed many of these. So I just ordered the bearing 90363-95007 and when it gets in I'll have the garage replace it. $350 for labor (much better than the $2k repair). However, the garage said because of this issue it causes the fluid to leak which could potentially affect the clutch in the rear diff. Having only 55k miles on my 2011 he said it should be ok. I'm praying and crossing my fingers I don't need a new coupling.

I will post my outcome once I get it back from the garage.
hey KRS5011- whats the update? im having this done tomorrow before i move on monday and want to make sure its the correct part. how many bearings are inside the coupler and did you only need to change 90363-95007 to fix your whirling noise issue?

thanks,
 

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hey KRS5011- whats the update? im having this done tomorrow before i move on monday and want to make sure its the correct part. how many bearings are inside the coupler and did you only need to change 90363-95007 to fix your whirling noise issue?

thanks,
Should* Key word only need that bearing, there is more than one, but its normally the bad one. Let us know how ya turn out!
 

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Just want to share my experience with this problem. Happy to say that I was able to fix the problem. Purchased the bearing and dust deflector from Toyota Dealership. The bearing part number is correct which is 90363-95007, the dust deflector is part 41252-44010. Just provided toyota dealer the part number and able to obtain them. The bearing a little bit different from the original but it fits fine. Right now the noise is totally gone. Just probably purchase the diffrential oil from toyota as well since most auto shop do not have the specific oil which is SAE-75W-85 GL-5. I hope this will help.
 
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