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Air conditioning temperature consistency
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lm5370
 


Member Since: 21 Aug 2012
Location: Taiwan
Posts: 29

2012 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4
Air conditioning temperature consistency

When using the air con (25,26, haven't used other settings) when I first start the car it'd feel quite cool, and after a while driving (traffic or not) the air con becomes quite hot that I have to turn down the temperature to get it cold again, but then it'd get a bit too cold and I have to turn it back to 25~26 again. This cycle kind of repeats. Is this some kind of fuel saving design of switching the air con on and off?
  
Post #9730224th Sep 2012 2:06 am
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Plane Fixer
 


Member Since: 19 Jan 2012
Location: Coffs Harbour
Posts: 39

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

I have the same problem in mine and at the last service this week was assured it is normal, yet I have a 2008 VW Golf with climate control and the temperature is consistent and seems seamless in operation. The D4 seems very crude by comparison for a luxury car. The alogarithms need refining somewhat; I am sure someone's teenager could sort it out!!!!
 Fuji White D4 2012. Reversing camera, E-diff, Hi-line sound, Xenon lights, ARB bullbar with Lightforce xenon lights and cargo barrier
Grey nomad and yarn master. 
 
Post #9734674th Sep 2012 10:59 pm
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kenny
 


Member Since: 17 Jan 2010
Location: South West Aus
Posts: 79

Australia 2011 Discovery 4 3.0 TDV6 SE Auto Siberian SilverDiscovery 4

Mine is the same and so were my D2s I think there is something wrong with the way they measure the temp in the cabin.

I find I have to set the so called climate control to extremes just to get it to switch to aircon or heating.

It's almost like it needs a reset button?
  
Post #9736525th Sep 2012 1:46 pm
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lm5370
 


Member Since: 21 Aug 2012
Location: Taiwan
Posts: 29

2012 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4

Thanks for the input, one less thing to be concerned about then. Speaking of which, does anybody know where the interior temp sensor are located?
  
Post #9736725th Sep 2012 2:40 pm
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jonesy63
 


Member Since: 17 Oct 2006
Location: Didn't we have a lovely time, the day we went to ...
Posts: 848

Australia 2011 Discovery 4 TDV6 Base 7 Seat Auto Fuji WhiteDiscovery 4

If only Tata could buy the blinking designers a thermometer to calibrate their kit! Whistle
  
Post #9739706th Sep 2012 9:29 am
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barryp
 


Member Since: 24 Dec 2006
Location: Sydney
Posts: 138

Australia 2006 Discovery 3 TDV6 SE Auto Chawton WhiteDiscovery 3

I think that the problem is in turning the temp up high (25 26 in the post above) before the engine/FBH has heated the water in the system.
I set mine on automatic at about 21 to 22 degrees and it works perfecly that way on my LR3 (gone) RR Sport and BMW X5 without any issues. Setting to a high temp when the system is cold does nothing to heat the car but causes overshoot as the system heats up.
My experience anyway. Very Happy
Regards
Barry
 2017 Range Rover Sport TDV6 L494 Fuji White
2011 Range Rover Sport SDV6 L320 Fuji White Loved but GONE
2010 TRAKKA Motorhome Fiat Ducato GONE (What a dud, don't buy one)
2006 Discovery 3 SE TDV6 Automatic Chawton White/Ebony. Loved but GONE
2006 BMW X5 diesel White/Charcoal, Bought new, gone after 12 years! Excellent vehicle.
Ex Member Range Rover Club NSW 
 
Post #9742496th Sep 2012 8:59 pm
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lm5370
 


Member Since: 21 Aug 2012
Location: Taiwan
Posts: 29

2012 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4

Thanks Barry I will turn down the temp a few notches to try Smile
  
Post #9743037th Sep 2012 1:00 am
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amazing
 


Member Since: 05 Mar 2011
Location: chengdu
Posts: 1542

China 2011 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

I find it consistant provided that there is a 3 degree diff between external temp and setting.

guess the delta T is quite large
 It is better to have and not need it then need and not have it.  
Post #9743047th Sep 2012 1:05 am
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