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can't get warm in this car!
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Dudleydisco
 


Member Since: 20 Jun 2014
Location: York
Posts: 781

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

Thanks for the info Mark. It's interesting that I'd say my XXV exhibits the same problems with hot feet, cold face and windscreen as yours when set to Auto. I haven't yet had the TSB applied to mine, but there does seem to be some evidence that the problems started with MY14.
 D4 MY14 XXV - RLD/IID BT
D4 MY13 HSE Lux - RLD/IID BT
P38 RR - Sad parting
110 - Even sadder parting
S3 88" - Still going strong after 23 years of ownership Smile

 
 
Post #17762149th Feb 2017 11:43 am
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mark the spark
 


Member Since: 22 Jun 2011
Location: southampton
Posts: 1755

2014 Discovery 4 3.0 TDV6 XXV LE Auto Causeway GreyDiscovery 4

i would say that it wasnt right before my other woes

but i can confirm its not working right now unless i manually overide the vent control

i "think" based upon 1 run that it improved mid process but that is only based on the 1 run so i wouldnt say thats evidence enough to be conclusive on that

sorry my evidence isnt more conclusive
 MY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle 
 
Post #17762229th Feb 2017 12:08 pm
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cornishboy
 


Member Since: 09 Oct 2008
Location: Bristol
Posts: 626

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

I have read all this today - I have the same issue in 2012 D4.

Using IID Tool I have internal temp reading of 29oC but its more like 19oC, with controls set to 23oC.

Can you recalibrate this using IID Tool? Do anything using the tool to help?
  
Post #177919515th Feb 2017 6:23 pm
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countrywide
 


Member Since: 16 Sep 2007
Location: UK
Posts: 6019

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Unknown ColourDiscovery 4

The temperature difference between cabin actual and sensor is quite normal.

I am still in contact with LR CS and the dealer has also escalated it.
  
Post #177920615th Feb 2017 6:41 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17597

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Perhaps 'quite normal' is the wrong expression.

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 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #177921215th Feb 2017 6:59 pm
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Member Since: 16 Sep 2007
Location: UK
Posts: 6019

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Unknown ColourDiscovery 4

Laughing

When I say normal I mean it is actually part of the design rather than being a issue on these model years. I logged quite a few different model years and they all read massively higher than the "real" internal temperature. I guess there is a offset in the software to compensate.
  
Post #177921915th Feb 2017 7:13 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17597

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

I find it hard to believe that it is part of the design - why would you deliberately misread the internal temperature?

I've seen a few vehicles with over-reading interior sensors (Lexx most recently on his facelifted MY10) but my assumption has always been that this is a fault somewhere (sensor, ducting or wiring) as usually these owners also complain about the heating.

My sensor works ok most of the time, but on long journeys the sensor can heat-up a little more than true ambient so I have to push the dial up a degree or two. I have a roll of insulation to add to the sensor location, which I never seem to get around to. Other than that it behaves wonderfully and keeps me toasty warm.

Anyway screenshot from my MY13 this morning. It really is 8 deg C inside and a chilly 7 deg C on the outside, the vehicle has not been run since yesterday so the coolant is down at 5 deg C:

Click image to enlarge


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 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #177951116th Feb 2017 11:44 am
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Member Since: 16 Sep 2007
Location: UK
Posts: 6019

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Unknown ColourDiscovery 4

What does it read when it is warm though, the temperature on first start up seems to be accurate but as it warms up the internal reading goes up and up. I tried MY12, MY16 and a couple of others. I did wonder about a roll of insulation, but the air distribution seems all over the place which causes the cold areas.

I would be interested, but being honest I am selling mine now as Land Rover claim there is no problem and cannot help. In the cold weather it is uncomfortable without playing with the controls, so given up and moving on.
  
Post #177951316th Feb 2017 11:50 am
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17597

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

As said, it reads correctly apart from on a very long drive (over 3 hours) where it can over-read by up to 2 deg C. This is easily compensated for by a click or two on the dial.

This 'as designed' nonsense from LRCS is just something they say to customers when they don't want to admit an issue. Sometime they say 'as designed' before issuing a recall or TSB fix.

I regard the 'as designed' phrase when spoken by LRCS as a request to go away as they cannot be bothered anymore. Sadly in your case you are going away from owning the vehicle. I don't think LRCS even keep a tally of customers it has forced away from the marque; they are more concerned with defending the product at all costs but with the minimum of bad press. Honesty is not in their lexicon.
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #177951516th Feb 2017 12:03 pm
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Member Since: 16 Sep 2007
Location: UK
Posts: 6019

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Unknown ColourDiscovery 4

You are right, it is a shame and not a great business plan although sales seem to be increasing anyway. I mentioned the external temperature issue where they claim it was working to design intent and then a TSB came out later to fix something which they claimed was working. You know what, if they said yes it's a problem we will fix it, but it might take 3 months, I would understand and wait for the fix. But when they don't admit the issue, which is pretty obvious if you look at the reports then you have no idea if it will ever be fixed. Especially as it is now a older model.
  
Post #177954116th Feb 2017 12:52 pm
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tonymcg
 


Member Since: 15 Mar 2016
Location: basingstoke
Posts: 36

2016 Discovery 4 3.0 TDV6 HSE Lux Auto Santorini BlackDiscovery 4

Hi guys

Anyone know how to remove the trim on a 2016 model to check LTB 00963 - HVAC?

Searched the forum for details and did find a post with diagram showing a rrsport trim removal

I've had a go and it's not like the H trim on my old D3 and everything is very tight and doesn't want to give

Appreciate the help!

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 D4 HSE Luxury 2016
D3 HSE 2009
D2 ES Premium 2003 
 
Post #178138920th Feb 2017 8:08 pm
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Dj_mini
 


Member Since: 23 Nov 2014
Location: dorset
Posts: 57

England 2010 Discovery 4 3.0 TDV6 GS Auto Causeway GreyDiscovery 4

Also having thew same problem we have just collected our 65 plate D4 the heating is nothing like our 2010 D4 we were both happy at 21 now we have to have it set to at least 25 in the new one to get warm how have land rover managed to change something that wasn't even broke!

Has any one made any progress wit this?
  
Post #178373625th Feb 2017 7:24 pm
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Barber
 


Member Since: 21 Sep 2016
Location: Bolton
Posts: 22

2014 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

Mine has just been dropped off tonight again......

At least they are acknowledging there is something wrong...
Driver who collected agreed that after 20 mins it blows cool air.

on the print out that came back with it there are the following things on it..

Carry out VHC and CitNow combined. (not a clue what this is )

another says.
*Recalibrated stepper motor.
Tested ambient temperature and found
to be 26.6 degrees (when auto set to 26 degrees)

Lets see..................
  
Post #17857461st Mar 2017 10:28 pm
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mark the spark
 


Member Since: 22 Jun 2011
Location: southampton
Posts: 1755

2014 Discovery 4 3.0 TDV6 XXV LE Auto Causeway GreyDiscovery 4

It seems to work fine on warm up using both floor and dash vents bit once its warm it seems to shut off the dash vents and only use the floor outlets
If you press the manual overide for dash vents the cabin warms quickly again

I think this is a more of a vent mix control issue
Anx my previous 2010 D4 never had an issue
 MY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle 
 
Post #17885157th Mar 2017 8:41 pm
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CarlW
 


Member Since: 07 Aug 2005
Location: Lancashire
Posts: 86

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Waitomo GreyDiscovery 4

I'm experiencing the same on a MY16 Landmark. What I've noticed is that the dash panel where the air sensor duct is located is warm to the touch after about 1hr of driving, certainly much warmer than the other 'upper' dash panels. The lower panels on the centre tunnel get warm due to the ducts to the rear. It's clearly seems a design flaw to place the internal temperature sensor in the warmest part of the dash, unless its not supposed to get warm in that area?

My suspicion is that the warmth is due to heating from inside the dash and I wonder if some part of the heater duct system is 'leaking' warm air on the driver side, or perhaps the ducts to the foot wells need more thermal insulation round them to stop heat transferring to the area around the sensor?

Like Tonymcg I'd like to remove the front trim panel that houses the temperature sensor to see if there is anything obvious inside the dash

Carl
 Disco 4 Landmark
Mercedes Benz SLK CDi
Defender XS SW 2010 - gone
TDV8 2008 RRS - gone
Disco 3 HSE 2005 - gone
BMW R1150GS 
 
Post #17886357th Mar 2017 11:53 pm
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