Question about 2003 Jaguar S-Type
The heater has ceased functioning in recent months for unknown reasons. Could it be as simple as a fuse or something much more complicated?
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Posted on Jan 02, 2017
All cars have what is called a heater matrix , this car has, it is inside the car behind the dash, the purpose is to provide heat in side the car, if the car is running at normal operating temp you thermostat is ok, the heater in the car is known as a heater matrix and will block up due to lack of use as water on passing throu when you have the heat on in side the car , hence the water leaves risidual that blocks it, if you keep a good level of antifreze/summer coolant in the systym it will prevent this, it is also the first palce to be affected when you lose water from the cooling systym, i will foward the detail how to clean it out, as removal is very labour intensive,
Posted on Dec 24, 2009
Has the vehicle overheated recently, if not there is a failure of the Coolant from engine valve controller, that measures flow through the Heater Matrix. Come back with more, as necessary.
Posted on Aug 29, 2009
the only thing that can change the air from hot to cold, or vice versa is the blender door. under your dash is a box which has 2 compartments. one with your heater core which is hot and one with ac which is cold. the blender door basically diverts which on the air in your car is being drawn from. if it is cold, air is moving on the ac side. if its hot, air is moving through the heater core side. if its warm, the door is in the middle. your temperature control knob is conecteted to an actuator, which moves that door. the actuator is a motor, but if it goes out, the door will be stuck on whichever side it is on. i would check that first. hope this helps
Posted on Oct 20, 2009
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