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AWD Discussion A forum dedicated to the AWD systems fitted to Volvo cars. |
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XC60 Rear Drive UnitViews : 3866 Replies : 8Users Viewing This Thread : |
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Mar 5th, 2017, 20:31 | #1 |
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XC60 Rear Drive Unit
We have a 2010 XC60 D5 AWD Manual, roughly 70k miles. There is a drone from the rear that starts at 50mph. At first I thought it was a failing wheel bearing but it doesn't get louder with increased speed but does get change slightly with more power.
The local dealer had a look and diagnosed a problem with the rear drive. They have quoted £5k to change the primary and secondary "final drive units". After picking myself off the showroom floor, I thought I'd do some research. What has really surprised me is that there is barely a mention on the internet of an XC60 AWD rear drive failing. You can usually find discussion about any fault on any car somewhere so clearly this one is not a common fault. There's just one other thread on this forum => http://www.volvoforums.org.uk/showthread.php?t=221154 Does anyone know anything about how these units fail? Is it reasonable to change both units or is the dealer just doing a blind replacement instead of identifying the cause of the problem? ps We've not had any warning messages about AWD. Last edited by redxc60; Mar 5th, 2017 at 22:28. |
Mar 5th, 2017, 21:01 | #2 | |
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The bearing in the Haldex is fairly straightforward to change and the final drive can be repaired too . But a dealer will not go that far . parts will be well under £100 ...
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Mar 6th, 2017, 00:09 | #3 | |
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Mar 6th, 2017, 13:41 | #4 | |
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Yes, that's my thread. I had pretty much similar experience as you, my (then) 6 year old XC60 has just 32K miles on the clock. Sounded similar to a wheel bearing. The dealership pretty much laughed at me on the phone when I told them a local engineer had suggested it wasn't a wheel bearing but a rear diff issue "never heard of that with an XC60". But a failure it was. Given mine was £2700, I can't see how it would now be £5K, so it sounds like they are replacing more than is necessary. It might be worth asking your dealer for an extraordinary contribution. I might have been "lucky" in that mine was really pretty low mileage.
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Mar 6th, 2017, 17:55 | #5 | |
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Primary final drive unit - £2,900 Secondary final drive unit - £2,300 It's booked into a specialist indie to see if they can be more sensible about what needs to be done. |
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Mar 6th, 2017, 19:37 | #6 |
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what is their explanation for changing both units ? It is like changing the engine and gearbox because there is a vibration somewhere . I explained above how to fix it for a reasonable price ... if you cant do it yourself a gearbox/axle specialist will be able to .
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Mar 8th, 2017, 17:31 | #7 |
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The indie has come back to me after 2 road tests and time on the lift. The noise can't be detected on the lift because there's no load through the transmission. They've checked the wheel bearings as well as the AWD transmission.
He has seen failed AWD before but says it needs to be a louder noise to diagnose where it is coming from when the car is on the lift. He also said that he sends problematic AWD boxes to a specialist Haldex chap to get the relevant bearing fixed. So I've found the right person, but I just need to get some more miles on the car! I'll phone the dealer to give them a piece of my mind. Last edited by redxc60; Mar 8th, 2017 at 17:46. |
Mar 10th, 2017, 21:34 | #8 |
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If the oil is original, get it changed. That may be all that's needed. Also make sure that the tread depth is roughly equal on all four wheels. Some tyres drone like crazy at certain speeds as they wear down, especially for the last third of tread, so make sure its none of those.
I haven't read the other thread, so forgive me if that has already been covered. Last edited by Quacker; Mar 10th, 2017 at 21:37. |
Nov 29th, 2019, 23:03 | #9 |
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Admittedly an old thread, but it's worth posting an update :
@Tannaton got it right about the noise kicking in at 50mph and the sound dropping with reduced power. I lived rhythm it for about 6 months expecting it to get worse but it then faded away to nothing. Very odd. Now at 99k and 9 years old this month but refuses to show any signs of age. |
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