Audio System - Poor Radio Reception With Defroster ON
NUMBER: 08-025-06GROUP: Electrical
DATE: May 27, 2006
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 08-032-04, DATED SEPTEMBER 22, 2004, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDES ADDITIONAL YEARS, MODELS AND PARTS.
SUBJECT:
Poor Radio Reception
OVERVIEW:
This bulletin involves repairing the rear window defroster grid or replacing the backlight.
MODELS:
2005 - **2007** (LX) 300/Magnum/**Charger**
SYMPTOM/CONDITION:
Radio reception (AM or FM) is fine until the rear window defroster is turned on.
DIAGNOSIS:
1. Start the vehicle and turn on the radio.
2. Select an FM station between 98 - 101.
3. Note the sound quality, then turn the rear window defroster on, and note the sound quality again.
4. If the sound quality degrades greatly with the defroster on, check for a broken or scratched rear window defroster grid line.
NOTE:
Make sure there is no aftermarket tint or treatment on the glass.
5. Pass the Remote Keyless Entry (RKE) Tester (Miller Tool No. 9001) over the individual grid lines of the backlight to determine the line or lines that are broken. A good grid line will cause little to no deflection on the tester.
6. Turn the radio and vehicle off and perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1. If the open point of grid line is accessible, follow instructions in Defroster Repair Kit, p/n 04549275, to repair the grid.
2. If the open grid line is not accessible or the location of the break cannot be determined, replace backlight with appropriate backlight listed in the Parts Required section above using the service procedures outlined in TechCONNECT.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.