Last post on May 09, 2013 at 11:07 AM
You are in the Jaguar S-Type
What is this discussion about?
Jaguar S-Type, Jaguar S-Type R, Heating / Cooling, Sedan
#63 of 106 Re: 2000 s-type jaguar [jeffsl]
Mar 06, 2010 (3:40 am)
For anyone else that may have a damaged/defective Air Conditioning Climate Control Module in a Jaguar S-Type, here are some guidelines and solution(s)...
1. Driver and/or passenger vent(s) blow(s) hot/warm air, even when the controls are set to max cold (or any other level). This may occur on just the driver side, just the passenger side, or both sides, and even intermittently.
1. Only the Heater Valve (or "Coolant Control Valve") is defective. After some time, corrosion and vibrations cause this component to fail, either mechanically and/or electrically (i.e. internal short).
2. Heater Valve + Climate Control Module are defective. When the Heater Valve dies or begins to die, it eventually takes the Climate Control Module with it to the grave.
3. Only the Climate Control Module is defective. Assuming the Heater Valve is good, this particular scenario is unlikely to happen.
Why the Heater Valve gets damaged:
Corrosion - not enough anti-corrosion additive in the coolant, or harsh weather conditions, or just old age? Vibration?
Why the Climate Control Module gets damaged:
There is no protection circuitry in the Climate Control Module to protect itself against damage due to failure at the Heater Valve.
How to diagnose:
1. Check the fuse for the Heater Valve. It may be labeled as "Coolant Control Valve" in the owner's manual.
2. Check the connection to the Heater Valve. Is the connector loose/corroded? Is the Heater Valve corroded? The S-Type is an always-hot-fuse system, which means that one wire to the Heater Valve is always "hot" (+12V), and it needs the other wire(s) to ground to chassis in order for the internal solenoid valve to work. Replace the Heater Valve first. If you have replaced the Heater Valve, but still experience the above symptoms, the Climate Control Module has probably been damaged already.
3. It is probably not the The Evaporator Discharge Temperature sensor(s) under the dash, but check them anyway.
4. If the dealer has replaced everything else besides the Climate Control Module for you already, then the last piece of the puzzle is probably the Climate Control Module. Gotta replace or fix it!
What I can do for you:
You send me your Climate Control Module (complete unit, inside the casing with front faceplate). If you cannot remove it from the vehicle yourself, I recommend that you have a qualified technician do the removal and later re-install for you. I will diagnose it at no additional cost to you (besides what you paid for shipping to me). Once I have confirmed the presence of repairable damage, I will give you a reasonable quote for the repair including return shipping back to you. Not only that, I will modify your module with protection circuitry that will prevent it from getting fried again in the same way (the next time your Heater Valve dies). If you happen to have the old Heater Valve ("Coolant Control Valve"), I can bench test that as well, but it is usually not repairable when the internal and sealed coils are damaged. Send me an e-mail to discuss your particular case: jaguarclimatecontrolgmail.com
#64 of 106 Re: 2000 s-type jaguar [dryden57]
Mar 06, 2010 (7:48 am)
I believe you may be talking about the heater valve which opens and allows water to flow into the heater core, its probably vac operated. You will have to ask a mechanic.
Should be cheap and easy. They gum up on all cars after awhile.
I'm saying this because your air still works, its just your heat. The valve is only partially open.
#65 of 106 Re: 2000 s-type jaguar [jaymzs]
Mar 06, 2010 (8:55 am)
Thanks for your imput - Please note the air con DOES NOT work.
#66 of 106 Re:2000 s-type jaquar
Mar 08, 2010 (3:56 pm)
Thanks Jeffsl, this is exact problem on mine 05 s-type, I took it to dealership and found out the heater valves were bad, and leaking some coolant from one of the valve, got that changed and replaced with new heater valves, I thought that would fixed the problem, but the dealer tech came out and told me the Climate control module also bad, and they wanted $1195+tax for it, this is after I spend $285 on the heater vales and $220 on labor. I will contact you shorty once I take out the Climate control unit.
#68 of 106 05 jaguar s-type
Mar 11, 2010 (11:40 am)
Same problem with heater, started blowing hot air out passenger side vent
with semi cool air on drivers side. Dealer wants two hundred to look at the
car. Can anybody assist with instructions to get access to the motor control
valve?. And control panel?
#69 of 106 Re: 05 jaguar s-type [jomama3]
Mar 11, 2010 (12:56 pm)
Had the same problem - It took Jaguar a little time to work it out - Over a day !! - Two split wires presumably to the censors / valves !! - Control valves were ok - They charged £185 incl VAT - which wasn't bad by their standards - Personally, they should have diagnosed problem quicker.
#70 of 106 Re: 05 jaguar s-type [jomama3]
Mar 11, 2010 (1:38 pm)
Hi and thanks for your help!
Do you know if they removed any of the dash components.
#71 of 106 Re: 05 jaguar s-type [jomama3]
Mar 11, 2010 (9:33 pm)
It may be a good idea to let the dealer (or a good jaguar mechanic) diagnose it. If you can use a multimeter i can give you some instruction with how/where to diagnose. e-mail me at: jaguarclimatecontrolgmail.com
#72 of 106 Re: 05 jaguar s-type [peter2002]
Mar 11, 2010 (9:36 pm)
wiring problems are some of the hardest problems to diagnose. happy to hear that you got it fixed.