Jump to content

climate control hot


Recommended Posts

MY stype diesel on an 04 plate with 77000 miles on the clock,has started blowing out warm air from the vents at whatever temp it is set at,

            I have had air con regassed  and compressor is working but it has made no difference 

I conclude therefore I have a non working motor or flap problem.

Anybody got some ideas of likely culprit and or costs of putting right at a garage.(gulp).


Link to comment
Share on other sites

Just had mine done, it was blowing hot air through drivers vents no matter what but cooler through passenger vents. It had climate control valve replaced not sure it they had to do a repair on circuit board behind control panel. But the garage was saying £400ish but I wasn't bothered as the dealer I bought of was footing the bill. Also I've seen it being a common problem the wires connecting into the climate control valve disintegrate. Might be worth checking wires it's. Phil

Link to comment
Share on other sites

Most likely the DCCV or associated wires which plug into it. DO NOT CONTINUE TO RUN CAR WITH FAULT as it can damage climate control unit, very expensive.


If you do your own repairs, the DCCV is located just behind the drivers side fog lamp, accessible from underneath and removing the underside bumper cover. either sticky valve or broken wires. (The wires may look intact but a gentle tug and the insulation will just fall apart.


It the valve needs replacing, disconnect from pipes and stick old wine corks into open end of pipes to stop  coolant leaking everywhere then reconnect new valve. 

Link to comment
Share on other sites

Thanks for replies.

Will have a look as soon as I get my arm back on operation ( ladder-guttering-fall-%$£&-ouch).

Unless i can get my friend to look at it.

Link to comment
Share on other sites

  • 2 weeks later...

Hi Colin,

I too am currently having an issue with my climate control system. In my case the drivers side would always blow hot air whilst the passenger side is tepid. I had the a/c re-gassed anyway with only slight improvement on passenger side and no improvement on driver's side. Concluded that either the heater valve or CC electronics faulty. Removed DCCV (surprised how little coolant escaped, to the extent that I got my money back on the antifreeze I bought in advance). Did some research and found that normal operation is that each solenoid should draw less than 1 Amp. Tested DCCV solenoids for resistance. Passenger side 12 ohms (a bit low), drivers side 9 ohms (too low). Bought new valve on net for £79, arrived next day. Before fitting, measured the resistance of new solenoids and both were 15 Ohms, confirming a problem with old valve. Fitted new valve. Result was that passenger side greatly improved but drivers side still the same. Conclusion is that old passenger side valve was partially closing and with new valve fully closing hence big improvement. Driver's side old valve not functioning at all and still not with new valve. Having previously confirmed that the wiring was ok, concluded that CCM electronics for drivers side burnt out by old valve drawing too much current hence not controlling solenoid on new valve. Further research suggests this is a common effect when continuing to drive with a faulty valve. This is because the fuse protecting the circuit is some 10A (as it has other circuits assigned to it) and no internal protection exists in the CCM (poor design). Also found out that in most cases the damage is a burnt pcb track rather than the drive transistor. So could be easy to fix. As I put my back out replacing the DCCV a few days ago, this is as far as I've got. I have spent time since however designing a simple current limiter that I intend to incorporate into each solenoid driver in the pcb as I don't intend to risk damage (or even worse a fire) again. In the mean time I simply put a hose clamp on the drivers side heater hose to emulate valve closure and this works really well. So until I fix the CCM I do at least have full temp control on passenger side and no hot air on driver side. I hope this information helps you or others.

Regards, Dennis.

Link to comment
Share on other sites

  • 5 weeks later...

Am sorry about not replying to peoples help earlier, but have been very busy sorting out family members who have been and indeed are rather ill.and running my business

(running about in a 1.2 skoda fabia hasn`t been the same)!!!

I had to let my local garage sort out problem for me, due to above problems.

needed new new dccv and sent control unit off to Swansea for repair.

Came back fine ,except garage hasn,t refilled  air-con gas .(trip to kwik fit or somewhere) as soon as I get time.


Glad to be back in jag.!!!



Link to comment
Share on other sites

Is it this you need?

Phil, The fact you have it in your sittingroom and not in your car i take it you don't need it? Is it for sale and in full working order? Mine is working apart from the fact the lower LCD display doesn't illuminate and I'm considering replacing it.

Link to comment
Share on other sites

Hi Harv. I'm selling this mainly if anybody needs climate mod. If your on about the window on audio part not lighting up this one doesn't. To be honest I'm not sure if they do? I've been in a number of stypes and none have been lit up, also my mates x type is same. Cheers phil

Link to comment
Share on other sites

@ Colin, many thanks for that info, I will look them up.

@Phil, I meant that my other half wouldn't stand for it having car bits on the sofa. Soon I will be moving house and the new place has got a perfect 'man-cave' attached to the garage which I can't wait to kit out and have as many parts lying around as I like.

Link to comment
Share on other sites

now I am getting frustrated.

I have taken my jag for a good run out,the first time since I  got it back

when car up to temp, I swith on heater control and get hot air for apx 10 seconds ,it then goes down to the ambient temp.

Even with the visual settings to low.

the air con isn't getting cold at all.

ccv has been replaced and dccv  repaired.   ideas?

air-con out of gas?

sticking valve in new ccv?

Link to comment
Share on other sites

Colin, I understood from an earlier posting you had the car returned to you and all is fine except the garage did not replace air con gas. I presume you got this done? But, even so, why did the garage have any need to touch the air con system for a DCCV fault? I say this because, as I understand it, the DCCV does not actually have any connection to the air con system. It simply controls the heater matrix, whether to allow coolant to the heater or not, depending on temperature selection.

If we are to assume that the air con system is ok then there still exist a problem with controlling the heater valve. When working normally, the DCCV is NOT energised to give heat and conversely, energised to stop heat .So if you can't stop heating coming through then either the wiring to the DCCV is faulty or, the DCCV itself (unlikely as just been replaced) or the CCM is not working (unlikely if just repaired). The only other possibility is the +12V supply to the valves if say the 10A fuse is blown (perhaps from previous fault). I believe the fuse supplies other circuits so you may have to investigate what the other circuits do in order to look for further symptoms. Hope this helps. regards.

Link to comment
Share on other sites

Car back and now working.9except for new problem-see new post)

The solution was a broken wire to dccv ,

When mechanic finished repair and tested same, the garage tells me it worked correctly,

The wire must have parted company along its length sometime after re-fitting due to it being brittle .

Lovely cold air ,,,,,again.!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Join The Club

    Join the Jaguar Owners Club and be part of the Community. It's FREE!


  • Topics

  • Our picks

    • Simply Jaguar show at Beaulieu - Sunday 23rd June 2024
      Jaguar Owners Club have a stand at this year's Simply Jaguar event at the National Motor Museum at Beaulieu, Hampshire on Sunday 23rd June 2024

      Tickets are available online here: https://www.beaulieu.co.uk/events/simply-jaguar/
        • Like
      • 1 reply
      Jaguar is commemorating the end of its internal combustion sports car lineage in 2024 with an exclusive limited-edition F-TYPE inspired by two iconic 1960s racing E-types

      Just 150 examples of the F-TYPE ZP Edition will be the last internal combustion-engined sports cars designed by Jaguar. These 575PS supercharged petrol V8 F-TYPEs feature specially curated interior and exterior details by the personalisation experts at SV Bespoke.
        • Like

      Please find attached your club label – please can this be distributed amongst your club members prior to the event. Please ensure that they print this label and display it in their windscreen upon entry to the event, this ensures that all members wishing to park within your club area are directed to the correct parking location by our stewards. Please do not modify or add logos to the club label.

      We do ask that all individuals have purchased their tickets on an individual basis in advance via our website, to speed up the entry process on the day. This can be done on our website here until 2pm on the day when admission closes: https://www.beaulieu.co.uk/events/simply-jaguar.

      Note that we do have two entrances available, one is exhibitors gate at the bottom of the hill as you come in to Beaulieu, with the other being the normal Simply event entrance within the attraction. Either entrance is fine to use and both are open from 9.00am, with the exhibitors entrance closing around 11am.

      Jaguar Owners Club (1).pdf
    • Simply Jaguar - Beaulieu Motor Museum - 25th June 2023
      Jaguar Owners Club have a stand at this years Simply Jaguar event at the National Motor Museum at Beaulieu, Hampshire on Sunday 26th June 2023

      Tickets are available online here: https://www.beaulieu.co.uk/events/simply-jaguar/

      Participant prices are only valid if arriving in a Jaguar and taking part in the rally. They are not valid for those arriving on foot.

      Participants can make the most of our EARLY BIRD discount by booking before 28th February 2023.

      Children under 5 require a ticket, this can be booked online free of charge.

      Participant and visitor tickets will include entrance to the rest of the Beaulieu attraction, including the National Motor Museum, Palace House, Little Beaulieu, World of Top Gear, Beaulieu Abbey and its grounds and gardens.

      The best time for viewing the Simply rally is between 10am and 2pm.





      Participants – Early Bird*



      Participants – Standard & On The Day




      Normal admission applies.

      Normal admission applies

      *Early bird tickets are available until 28th February 2023

      Entry with your Jaguar is from 9am – 2pm. Please make sure you have your ticket printed or available on your phone, ready to be scanned on arrival.

      Please do not arrive early for our Simply rallies as no facilities will be open prior to 9:30am.

      Cars cannot leave and re-enter the grounds for the Simply rallies.



      We do ask for a final update on numbers 2 weeks prior to the event following which we will send out club labels to you via email for you to then distribute out to club members. Club members then need to print and display these in their windscreen on arrival. This helps us then park you all in your club area together.

      1. Trevor (admin)
      2.  Paj
      • 5 replies
    • F-TYPE marks 75 years of Jaguar sports cars and its final model year update
      The Jaguar F-TYPE is the definitive Jaguar sports car from a rich bloodline spanning 75 years and including some of the most iconic models ever built
        • Like

  • Create New...