Hello Fellow XFers,

Happy to be part of this community. Here is my first post. I purchased my 2005 SRT-6, 3,700 miles, a month ago in the dead of our New England winter. You think I would be happy for the efficient heating system. The only problem is I have to drive with the fan speed almost off if I am to survive a trip longer than a half hour. NO matter what I do, the heat is unbearable. AC seems to work slightly, on the passenger side. I am planning to visit my dealer ASAP but thought I could use some back-up from my community. I could not find any TSB's on this problem.

Thanks,

Paulius

 

You did figure out how to turn down the interior temperature, right?

 

Temp is controlled by the dials with blue and red dots, yes? If yes, then I am all blue dots and it is still HOT.

Paulius

 

Most likely your climate control is in SAFE FAIL MODE (Full heat). You need to get it in to a dealer to have it checked out and have the root cause of the problem corrected.

Good luck.

 

I have the same problem. Dealer said it was not covered under Warranty. The Heater control valves are normally open. The Heater Control Module grounds the valve which causes it to close. There are 3 wires on the valve, the center one is 12v and the 2 outer ones are the control signal. In my case the Control Module is bad and the passenger side never turns off. The Heater Control Module is part of the Dash Board Controls and there is a good test procedure in the Service Manual. To test mine I put a jumper wire on the center pin of the Heater valve to the positive post of the battery, put jumper wires on the outside pins on the Heater valve and ground them. You should be able to feel the valves close. Start the engine and turn on the AC to see if it is cooling now. If you remove one of the grounded jumpers that side of the car should get warm quickly.
To double check the module itself. Measure voltage from center pin (2) of the cable to ground. It should be 12Vdc. Measure from pin 1 to 2, then 2 to 3, with the heater set to cold (Blue Dots) and you should read 10 to 14 Vdc. If you do not see 10Vdc or more then the module is probably bad. If you press the R.E.S.T button with the car off you should hear the pump under the rt headlight turn on with the temp controls set to heat (red Dots).

Good Luck,
Mike

 

As long as the car is still under the standard warranty this should be covered. The only exception might be if there is damage to the system caused by the owner. It doesn't sound like that is the case for either of you.

 

Hey CobraMike,

Thanks for the detailed response. IT turns out to have been a faulty control module. It was replaced under warranty. Lucky me.

Paulius