My BMW XM's heating system is not working properly. The air coming out is not warm at all, despite the temperature being set to maximum. What could be causing this issue and how can I fix it?
ReplyIt's most likely a faulty heater control valve. You can check the valve by turning on the heat and feeling the hoses leading to the heater core. If they are not warm, the valve is most likely stuck closed and needs to be replaced.
Another possibility could be a clogged heater core. You can try flushing it out with a hose or taking it to a mechanic for a more thorough cleaning.
Lastly, it could be an issue with the thermostat. If it's stuck closed, the engine will not heat up properly, leading to a lack of heat in the cabin. Get it checked and replaced if necessary.
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