| AWD – DRIVELINE VIBRATION – HOWL NOISE AT HIGHWAY SPEEDS IN COLD TEMPERATURES – BUILT ON OR BEFORE 8/13/2010 |
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2007-2011 Fusion, Milan and MKZ vehicles equipped with all-wheel-drive (AWD) systems and built on or before 8/13/2010 may exhibit a driveline vibration or a howl noise at highway speeds in cold temperatures.
SERVICE PROCEDURE
- Place the vehicle in neutral, position it on a hoist.
- Index-mark both the driveshaft flanges at the power transfer unit (PTU) and rear differential unit (RDU).
- Disconnect the rear driveshaft from the PTU and from the RDU assembly.
- Leave the driveshaft attached to the vehicle.
- Rotate the driveshaft by hand, and check for any roughness feel to both the front and rear driveshaft bearings.
- If no roughness is felt from either bearing, do not continue with this article. Re-index the driveshaft.
- If any roughness is felt from either bearing, replace the driveshaft assembly.
| PART NUMBER | PART NAME |
| AE5Z-4R602-A | Rear Driveshaft Assembly |
| W520113-S440
Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API | Center Bearing Support Nut |
W705443-S900
Ford Motor Co. Genuine Exhaust Nut - W705443S900
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API | Exhaust Flex Pipe Flange Nut |
| W711960-S439 | Rear Driveshaft-To-Pinion Flange Bolt |
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Last update on 2026-06-03 / Affiliate links / Images from Amazon Product Advertising API
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