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A/C blowing hot and cold at same time. The answer
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motolite
 


Member Since: 18 Mar 2013
Location: Sydney
Posts: 931

Australia 
A/C blowing hot and cold at same time. The answer

Hi all,
scenario, leave garage and switch a/c on with both front controls set at 22. 300m up the road and drivers is blowing really cold air while passenger is blowing warm. It will eventually sort itself out after 8-10km.
Are there 2 different sensors in the cabin detecting if one is in sun and the other in shade? I'm clutching at straws and trying to avoid a trip to the dealer.

OK, just back from dealer. they found the system was over-gassed. All sorted they said…NOT. 2 km's up the road and same problem. Back to dealers next Monday for round 2. Thud


Just back from the dealers and it appears ops are normal.It's actually blowing cool and cold due to there being a sun sensor under the grill on top of the dash. This sensor can determine if one side is more in sun than the other and adjust the flow of air accordingly. The tech said that the software was downloaded from the car sent to JLR and they said it's all normal.
 

Last edited by motolite on 25th Nov 2013 5:16 am. Edited 2 times in total 
Post #11835526th Nov 2013 10:56 pm
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northernmonkeyjones
 


Member Since: 11 Feb 2013
Location: Derby
Posts: 64

2010 Discovery 4 TDV6 Commercial Manual Santorini BlackDiscovery 4

If its anything like the system in the ffrr then there are 2 valves in the engine bay which control the flow of water to the 2 heater matricees. If its the same type of system its possible one is sticking

Just and idea.
  
Post #11839567th Nov 2013 7:44 pm
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caverD3
 


Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

There is a reset procedure for the AC. Do a search. Idea
 â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games”
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System. 
 
Post #11841628th Nov 2013 1:31 am
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motolite
 


Member Since: 18 Mar 2013
Location: Sydney
Posts: 931

Australia 

thanks. found it for a D3, but not a D4 Sad another hint please.
  
Post #11841698th Nov 2013 3:26 am
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caverD3
 


Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

Did you try it on the D4?
 â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games”
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System. 
 
Post #11841728th Nov 2013 4:50 am
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motolite
 


Member Since: 18 Mar 2013
Location: Sydney
Posts: 931

Australia 

still looking for the 'econ' button?
  
Post #11841738th Nov 2013 6:25 am
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chopcat
 


Member Since: 08 Apr 2013
Location: Pembrokeshire
Posts: 478

Wales 2009 Discovery 4 3.0 TDV6 HSE Auto Baltic BlueDiscovery 4

likewise here can anyone expand upon which buttons for the D4 please
CC
 may the odds be ever in your favor  
Post #11841788th Nov 2013 7:44 am
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