Engine and engine cooling: cooling system
- Component
- Engine and engine cooling: cooling system
- Manufacturer
- VOLKSWAGEN OF AMERICA,INC
- Vehicles affected
- 6,217
- Reported to NHTSA
- 1998-11-13
- Owners notified
- 1999-02-22
Defect description
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH VR6 ENGINES. A COOLANT SYSTEM COMPONENT SUCH AS THE THERMO SWITCH, RADIATOR FAN, OR WATER PUMP, CAN MALFUNCTION CAUSING THE COOLANT TEMPERATURE AND COOLANT SYSTEM PRESSURE TO INCREASE SIGNIFICANTLY. OVER TIME, EXCESSIVE PRESSURE CAN CAUSE LEAKAGE OF COOLANT FROMTHE SYSTEM, INCLUDING LEAKAGE FROM THE HEAT EXCHANGER.
Safety risk
LEAKAGE OF HOT COOLANT FROM THE HEAT EXCHANGER CAN CAUSE INJURY TO THE FEET OF THE DRIVER OR STEAM UP THE INTERIOR OF THE VEHICLE TEMPORARILY IMPAIRING THE DRIVER'S VISION.
Manufacturer remedy
DEALERS WILL INSTALL IN THE COOLANT INLET HOSE TO THE HEATER CORE, A PRESSURE REDUCER WITH A 5MM DIAMETER SECURED BY A SPRING TENSIONED HOSE CLAMP. ALSO A NEW RELAY THAT WILL CHANGE THE OPERATION OF THE SECONDARY ELECTRICAL COOLANT PUMP WILL BE INSTALLED. DEALERS WILL ALSO PERFORM A FUNCTIONAL CHECK OF THE COOLING SYSTEM TO MAKE SURE THAT ALL COOLING SYSTEM COMPONENTS OPERATE PROPERLY.