Some 2007-2011 Lincoln MKZ vehicles equipped with AWD and built on or before Aug. 13, 2010, may exhibit a driveline vibration or a howling noise at highway speeds in cold temperatures.
With the vehicle raised, index-mark both the driveshaft flanges at the power transfer unit (PTU) and rear differential unit. Disconnect the rear driveshaft from the PTU and from the rear differential.
With the vehicle raised, index-mark both the driveshaft flanges at the power transfer unit (PTU) and rear differential unit. Disconnect the rear driveshaft from the PTU and from the rear differential.
Some 2007-2011 Lincoln MKZ vehicles equipped with AWD and built on or before Aug. 13, 2010, may exhibit a driveline vibration or a howling noise at highway speeds in cold temperatures.
With the vehicle raised, index-mark both the driveshaft flanges at the power transfer unit (PTU) and rear differential unit. Disconnect the rear driveshaft from the PTU and from the rear differential.
Leave the shaft attached to the vehicle. Rotate the driveshaft by hand and check for any roughness at both the front and rear driveshaft bearings. If roughness is felt from either bearing, replace the driveshaft assembly. If no roughness is felt, re-index the driveshaft and road test.
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