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Discussion Starter · #1 ·
http://us.f13.yahoofs.com/bc/43dafb42mc9a58637/bc/Fusion+TSB+PDF+Files/tsb06-21-09+(Poor+Radio+Reception).pdf?BC5skZGB2gl1Nzkv

FORD: 2006 Fusion
LINCOLN: 2006 Zephyr
2007 MKZ
MERCURY: 2006 Milan


ISSUE:
Some 2006 Fusion, Milan, Zephyr and 2007 MKZ vehicles with the on-glass AM/FM antenna may exhibit significant FM static and potentially static on AM stations when the backglass defrost grid is turned on.

ACTION:
Follow the Service Procedure outlined below to resolve the customer concern.

SERVICE PROCEDURE


Some vehicles have been found to have glass defrost patterns with microscopic gaps in the rear defrost grid. Electrical current still flows through these gaps to allow the defrost function to work on each wire, but very small sparks jump the gap and cause electromagnetic noise. This noise sounds like static which couples to the on-glass AM/FM antenna. Heavy moisture on the glass may make the static more severe, but only when the defrost grid is turned on. Generally, the antenna module, coax, radio or climate control head replacement is not an effective repair for these symptoms.

1. Turn the radio on and tune to a clear FM station using the Seek function.

2. Activate the defrost function and verify that there is a degradation of radio reception quality (static) with the backglass defrost grid ON.

3. Deactivate the defrost function and verify that the radio reception quality is improved (less or no static) with the backglass defrost grid OFF.

4. If the radio reception is clearly affected by the status of the defrost function, replace the backglass. If the radio reception is not affected by the status of the defrost do not replace the back glass and follow normal diagnostic.
 

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I take it you work on the inside? Thanks for keeping us up to date on all the TSB's!
 
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