One problem related to engine cooling system has been reported for the 2003 Mercury Sable. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mercury Sable based on all problems reported for the 2003 Sable.
2003 Mercury Sable blower motor inoperable. Occurred in January as an intermittent issue. Motor failed completely in Mar 2005. Technical service bulletin issued effective 7/16/2004 states: 2001-2004 taurus/sable: water in blower case-blower motor/resistor failure-vehicles built between 5/1/2003 to 12/15/2003. Some vehicles may exhibit water in blower case, resulting in leakage to interior passenger floor. Inspect and seal cowl area and install rain-hat. Inspect and replace blower motor. The blower motor was replaced as was the resistor. The cowl leak is not on recall even though it causes significant water damge to electrical components and interior passenger space. This is a manufacturer defect and should not be the burden of the consumer.