Drivetrain - Driveline Vibration/Howl At Highway Speeds

TSB 11-2-14

02/07/11

AWD - DRIVELINE VIBRATION - HOWL NOISE AT
HIGHWAY SPEEDS IN COLD TEMPERATURES -
BUILT ON OR BEFORE 8/13/2010

FORD:
2007-2011 Fusion

LINCOLN:
2007-2011 MKZ

MERCURY:
2007-2011 Milan

This article supersedes TSB 08-14-1 to add a production fix date, update the vehicle model years, title, Service Procedure and Part List.

ISSUE
Some 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.

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

1. Place the vehicle in neutral, position it on a hoist. Refer to Workshop Manual (WSM), Section 100-02.

2. Index-mark both the driveshaft flanges at the power transfer unit (PTU) and rear differential unit (RDU). Refer to WSM, Section 205-01.

3. Disconnect the rear driveshaft from the PTU and from the RDU assembly. Refer to WSM, Section 205-01.

a. Leave the driveshaft attached to the vehicle.

4. Rotate the driveshaft by hand, and check for any roughness feel to both the front and rear driveshaft bearings.

a. If no roughness is felt from either bearing, do not continue with this article. Re-index the driveshaft. Refer to WSM, Section 205-01.

b. If any roughness is felt from either bearing, replace the driveshaft assembly. Refer to WSM, Section 205-01.

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME

110214A 2007-2011 Fusion, Milan, 0.9 Hr.
MKZ, AWD: Inspect And
Replace Driveshaft
Assembly (Do Not Use
With Any Other Labor
Operation)

DEALER CODING
CONDITION
BASIC PART NO. CODE
4R602 12





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