Question about 2005 Jaguar S-Type
It is a duel system climate control and like I said if I use the manual settings all the vents and system works fine, also when I put it on defrost there is nothing comes out of the facia and side window vents.
It might be something in the switch itself wether its a knob or a slider ,behind there is little brushes that tell which ones to open.
Posted on Nov 29, 2012
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Posted on Jan 02, 2017
SOURCE: I have a 2004 S
I had the same problem and found that this is caused by the Dual heater Control Valve malfunctioning.
The DHCV can be purchased at Rock Auto Parts for around 150.00 and can be replaced in around 30 minutes. This valve controls the hot water flow for the heater core for each side of the passenger compartment and when it fails, it's default is "open" which allows the hot water to flow freeley for whatever side failed. It is located on the passenger side front about 6 inches down from the top of the radiator. You will need some patience and some mechanical skill to replace it but its not terrible.
Posted on Nov 24, 2008
sounds like the blend motor from hot to cold is stuck open half way allowing both temps to come into the car.
Posted on Aug 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
If you look by the firewall there are two hoses. They go into the heater core. When the engine is warmed up, and the heater on. Feel if both hose are equally warm. Be carefull you don't burn yourself. A valve lets the hot water circulate through the heater core therefore providing heat. Also feel if the heater core is warm under you dash on the passenger side. If it feels cold then water is not circulating. Locate the valve, which is usually vacuum operated. See if there is vacuum there when the heater is in the on position.
Posted on Nov 14, 2009
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