Intermittent scrubbing sound...Driveshaft?

[Hero6]

I have an 11 4.6 with about 105k, recently started to hear what sounds like a scrubbing sound coming from the rear of the drivetrain. It is intermittent sound with no rhythm, but I only seem to hear it between 35-45 mph. It is just a scrubbing sound that is not constant, but come and goes, NO vibration. I jacked up the rear of the car, pulled the wheels off, checked the brakes, bearings for movement, suspension components, couldn't find anything obvious there. I did find that the rear rubber driveshaft dampener was tearing around several of the bolt holes. Not sure if this is the cause, anyone had any experiences with this? I have an aftermarket extended warranty that covers the driveshaft's, so i will likely take it to the dealer and let them replace the driveshaft part.

 

[homeofstone]

The drive shaft flex connector needs to be replaced before it rips and causes damage. Also the scrubbing could be emergency brakes. Did you check the center driveshaft carrier bearing?

 

[Hero6]

Thanks for the reply. I did not check the carrier bearing as I believe it is located above the heat shielding for the exhaust and not easily accessible, at least that's the way it appeared. I am a DIY'er, but since I have the warranty, I will have the dealer take a look when they replace the driveshaft dampener. If the dampener was $50 or so, I would replace it myself, but it looks like it is $160+ for the correct one (not the Dorman one from AutoZone that I have read does not fit the sedans as they advertise it does) I will take a look at the emergency brake as well when I get a chance. thanks

 

[homeofstone]

My carrier bearing had to be replaced at about 60k miles as I recall. The early 2011 V8 had a small vibration between 20 and 30 mph which was a the center carrier bearing which was replaced by a beefed up one. You could feel the vibration in the center armrest. Not a big deal and only problem I had until car had over 210,000 miles on it. Steering wheel limit switch was replaced per a TSB but did not cause us a problem. Transmission service on the ZF is important if you are going keep the car and put 200k or more on it. Note the transmission has a pan/filter that needs to be replaced when serviced. Some techs don't know about the pan/filter and claim the transmission has no filter, LOL. Don't forget about the fuel tank air filter and fuel filter, change.

 

[Flarfignewton]

Would you happen to know what the part number for the carrier bearing is? Hyundai will only sell you a whole driveshaft and I don't want to spend that kind of money just to replace the bearing. Also I replaced the flex disc/rear driveshaft coupler, the correct part number for my 2009 is 935-107. $105 on Amazon.

 

[Hero6]

Just an update: I finally took my car to the dealer the other day. They are replacing the entire propeller shaft ( I call it a driveshaft) which is sold as an assembly with the rear rubber dampener and the carrier bearing. List for just over $1000. My warranty is covering it, just paying my $100 deductible. Hopefully this will fix the "scrubbing" sound from the rear.

 

[Hero6]

Update: Dealer replaced the driveshaft (propeller shaft), took 30-days to get the part as it was backordered. Price on invoice was $1412 for the part, and $200 labor to install. Drove it off the lot and still have the same noise, this did not fix it. I am now thinking it may be something in the rear differential. Will have to schedule another appointment with the dealer.

 

[Jerrymacdaddy]

Update: Dealer replaced the driveshaft (propeller shaft), took 30-days to get the part as it was backordered. Price on invoice was $1412 for the part, and $200 labor to install. Drove it off the lot and still have the same noise, this did not fix it. I am now thinking it may be something in the rear differential. Will have to schedule another appointment with the dealer.

I’m having the same issue. Was there any resolve?