XC70 T6 Haldex issue

hamishb

My 2012 XC70 T6 shudders under acceleration. Even if I put it in sport mode and hold it in third gear there is a driveline shudder from the rear.

Been diagnosed as a Haldex issue. Not sure if just the electronics or a bigger issue width the whole unit.

Ideas for repairs? Am working with Swedish Prestige in Melbourne to find some options which don’t cost thousands.

Philia_Bear

changing the filter and fluid is step #1, pump #2

being in melbourne I would ask for a second opinion from one of

Voldatberry automotivemasons prestige

hamishb

Cheers I might pop up too Berry as they are closest.

Is this a potential option - https://www.ipdusa.com/products/21623/volvo-k21623-ipd-aoc-haldex-4-differential-service-kit-builder-s60-s80-xc60-xc70-xc90

timbo

The fact that it's shuddering is a little worrying, usually pump/filter issues will bring up AWD faults and the DEM will cut haldex operation and run in FWD mode

Ex850R

What codes did Swedish Prestige pull? (They can be a good shop,don't discount them but talk to Mark at BMG)

hamishb

No codes. Diagnosis from SP was "rear diff on command clutch is slipping causing vibration and shudder. AOC unit needs to be replaced"

Currently disconnected the AOC so I am in FWD only at present (and noticing some torque steer under heavy acceleration). But no driveline shudder.

hamishb

Turns out Mark from BMG has same vehicle and hopefully he can fix me up. I shall report back.

timbo

Clutches would certainly cause the shudder but will require complete AOC housing and just resuse your DEM. Probs worth changing the filter and cleaning the pump while it's apart

hamishb

I think BMG will replace the filter and AOC.

BTW anyone bought anything from Xemodex? They can also supply a replacement DEM I think.

https://xemodex.com/us/product/differential-electronic-module-cloning-for-volvo-vo-1040-86001749-10-23/

timbo

Your problem sounds mechanical so no need to touch the DEM

Ex850R

Berry Motors uses Xemodex products in any case.

iceton1975

Ex850R
Berry Motors uses Xemodex products in any case.

no we don't!

hamishb

Well Mark from BMG supplied me a wrecked AOD from a 2015 XC60 T6 and the car now drives smoothly, especially under load.

Excellent service and great value for money.

iceton1975

Glad to help at least it’s fixed and cheaper than anywhere else ?

timbo

@iceton1975 You can't read the part numbers on the haldex modules though I'm gonna send you to specsavers

iceton1975

timbo
@iceton1975 You can't read the part numbers on the haldex modules though I'm gonna send you to specsavers

come and get the parts yourself lazy bugger