Question about 2003 Jaguar S-Type

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03 S-Type R "HELP" !!!A/C Problem!!!!! blows hot air

Hi everyone OK this is my problem I got a 2003 S-Type R my front left and right and the rear back vents is blowing hot air when I turn on the A/C and the front middle vent is a lil cold but not as cold as it should be. So I took it to a shop after it got the A/C recharge it was doing the same thing so I took it to another shop that work''''s on Jags they put it on the machine and told me it was the heater valve and auxiliary water pump so I got those change and it still does the same thing. PLEASE HELP me if you had the same problem know what it is Thanks

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  • Mikey E Jul 15, 2008

    Im located in Hayward CA man I wish you where around the San Diego or LA area because I got family out there and Im willing to drive there is there a way you could tell me step by step to fit it? 

  • brinker278 Jul 21, 2008

    Hi Mikey , is the hating problem solved in your car , what was wrong ? for the thirth day my car is in the workshop and still they did not found what is wrong .
    thanks in advance for an answer and kind regards ,Patrick

  • hockeypunktr Aug 15, 2008

    I have been trying to figur this out for awhile i have the same problem it just blows hot air. Mikey did you get it fixed finally and how much did it cost to be fixed.What was the real problem?

  • carpeto7 May 06, 2009

    I have exactly the same issue with exactly the same vents blowing heat when the AC is on. Has anyone solved this issue yet so I can instruct my mechanics on the issue. The blend doors/system makes...just not sure what to do about it!



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I had the same problem. exactly. the problem I determined was that the water flow to the heater core is not being restricted by the DCCV. ( heater valve ) My dealer tried replacing everything electronic. and then wanted me to buy a 1400.00 control head. I said no way. I determined that there was no power going to the center yellow wire on the DCCV. Therefore it will default to full hot when no electricity is present. I checked the fuse and had power but none at the connector of the DCCV. I began to follow the harness from the DCCV to the chassis of the vehicle and in the right front coner of the car under the headlight attached to a frame rail. right where everything drips if you have a leak is a connector that has the 3 wires for the DCCV. it is a 8 place connector with 7 wires in it. It had become corroded inside from a leaking DCCV and overtime deteriated the terminal. I replace the connector and all problems were fixed when I had power to the DVVC. I have pictures if you need them.

Posted on Sep 05, 2009

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This is going to be a problem with your air door actuators they most likelly are electronic controled, seems to be like the two places you took it to don't know what they are doing, this is simple, the doors controling heat and cold are not working propelly, have your car take to another place, specially if they specialize in a/c system, and ask to have your blend door system inspected, since the blend door is the one controling heat and cold,
i hope and i been helpfull and i will apreciate your ranking,
i don't know where is your location but if not too far from vegas i should be hable to fix it.

Posted on Jul 15, 2008

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I had the same problem recently, and I wasn't about to let the summer kill me. I was referred to friendly, personalized help that totally saved the day. After a bunch of e-mails back and forth, I now have cold A/C again! They can be reached at

Posted on May 25, 2010

Hi , I have also an S-Type 2003 4,2l V8 same problem , last week they where searching for over 2 days to find out what is wrong with my car , ad the local (****) service in Prague AMT MOBILE , real amateurs and the biggest problem all the services are owned by the same company they have a monopole here in the Czech Republic. . They seem to take parts out of other cars and mount in the car with the problem , in this way they look to solve a problem . In the end the ordered I hink an actuator as you-lasvegastech proposed. On monday they will mount this actuator , keep you people informed .

Patrick , Prague Czech Republic

Posted on Jul 19, 2008

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