* Fan Speed: A rotary knob usually controls the fan speed. Turning it clockwise increases the fan's speed. "0" or "OFF" completely shuts off the fan.
* Temperature Control: Another rotary knob controls the temperature. Turning it clockwise generally increases the heat. There might be a separate control for the passenger side, or it might be integrated into a single control.
* Airflow Direction: There are usually vents (sometimes adjustable) directing the airflow. You might have controls to direct air to the:
* Dashboard: Warms the front of the car.
* Floor: Warms the feet.
* Defrost: Clears the windshield and side windows.
* Combination: Many systems allow a combination of these settings.
* AC (Air Conditioning): The air conditioning system is separate but often interacts with the heater. You'll likely have a separate button or switch to activate the AC. Even when using heat, the AC compressor might cycle on to remove humidity from the air, making the heat feel drier and more comfortable.
To use the heater:
1. Turn on the ignition: The heater won't function unless the car's ignition is on.
2. Select desired fan speed: Turn the fan speed knob to your preferred setting.
3. Select desired temperature: Turn the temperature knob to the desired warmth.
4. Select airflow direction: Use the vents or controls to direct airflow to your preference (dashboard, floor, defrost, or a combination).
5. Consider using the AC: For drier, more comfortable heat, consider engaging the AC.
Troubleshooting:
If your heater isn't working, check the following:
* Coolant level: Low coolant can prevent the heater from working effectively.
* Thermostat: A faulty thermostat can prevent the engine from reaching operating temperature, limiting heat output.
* Fuses/Relays: Check your owner's manual for the fuses and relays associated with the heating and ventilation system. A blown fuse or faulty relay can interrupt the heater's operation.
* Blower Motor: A failing blower motor might cause weak or no airflow.
If you're still having trouble, consult your Jaguar XJ6 owner's manual for detailed diagrams and instructions specific to your vehicle. A qualified mechanic can also diagnose and repair any underlying issues.
