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TSB Main Page
TSB
06-21-19
  • HEATER CORE LEAKAGE AND ELECTROLYSIS (INFORMATION ONLY)
Publication Date: October 17, 2006

FORD:
1997-2002 Contour
1997-2007 Crown Victoria, Mustang, Taurus
2000-2007 Focus
2002-2005 Thunderbird
2005-2007 Five Hundred, Freestyle
2006-2007 Fusion
1997-1999 F-250 Light Duty
1997-2003 Windstar
1997-2007 E-Series, Expedition, Explorer, F-150, F-53 Motorhome Chassis, F-Super Duty, Ranger
2000-2005 Excursion
2001-2003 Explorer Sport
2001-2007 Escape, Explorer Sport Trac
2004 F-150 Heritage
2004-2007 Freestar
2005-2007 Escape Hybrid
1999-2007 F-650, F-750
LINCOLN:
1997-2002 Continental
1997-2007 Town Car
2000-2006 Lincoln LS
2006 Zephyr
2007 MKZ
1998-2007 Navigator
2002-2003 Blackwood
2003-2005 Aviator
2006-2007 Mark LT
MERCURY:
1997-2002 Cougar, Mystique
1997-2005 Sable
1997-2007 Grand Marquis
2005-2007 Montego
2006-2007 Milan
1997-2002 Villager
1997-2007 Mountaineer
2005-2007 Mariner
2006-2007 Mariner Hybrid

This article supersedes TSB 01-15-6 to update the vehicle model years and Service Procedure.

ISSUE:

The majority of repeat heater core leaks are due to high flow rate or use of poor quality coolant. However, electrolysis should also be checked, especially when repeat repairs have occurred.

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