Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I've had a bit of a play and the interior sensor offset appears to be self-heating through the thermistor. If they want to keep this thermistor JLR need to either reduce the current flowing through it or increase the airflow over it.
There we go, investigation over - JLR can send my fee to Robbie Towers.
Right, what's next?Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 27 Feb 2011
Location: Wilts
Posts: 1376
70 miles to the gallon
14th Apr 2017 8:42 pm
SkyeScot
Member Since: 21 May 2017
Location: Skye
Posts: 1
Anyone have a recent update on the heating problem? I live about 3 hours drive from nearest Land Rover garage but car is going in for a service so I was hoping there might have been some resolution that I can ask the dealer about.
However I suspect that, like me, people are finding it less noticeable now given the weather is warmer. I also suspect that come autumn/winter it will start to annoy again!
21st May 2017 2:13 pm
okennedy
Member Since: 03 Dec 2008
Location: Roscommon
Posts: 138
Thread revival!
Did any of ye guys have LR get to the bottom of this or have this resolved? Reading the thread I've have noticed coming from MY12 to MY15 that I too have to fiddle with the heater controls more and put the heat up further to get the cabin to a somewhat ambient temperature.
Coming into the cooler months now, was wondering had LR come up with a right fix!MY15 D4 Causeway Grey
MY12 D4 Orkney Grey - Gone
MY07 D3 Java Black - Gone
12th Oct 2017 11:30 pm
nazca sand eddie
Member Since: 29 Oct 2015
Location: England
Posts: 41
Twelve months ago I had the TSB....... update.
That stopped the sudden blast of cold air that would come through after a few minutes after driving for the first time that day.
But, the heater output is still very poor.
I have had two Freelander2 before the Disco4, and after their almost immediate warm up, the Disco4 is certainely not working correctly.
After a year I have learnt to live with it, but it's not right, especially on a high priced car.
13th Oct 2017 8:23 am
ecs0set
Member Since: 25 May 2017
Location: Dorset
Posts: 95
I believe the cause is above. The thermistor is self-heating.
In most cars, these have a tiny fan blowing the air over them but I suspect the Disco doesn't. When I get time, I'm going to get a small laptop fan and hook it up to blow or suck air over the thermistor. Should be a cheap fix if it works.
13th Oct 2017 11:38 am
okennedy
Member Since: 03 Dec 2008
Location: Roscommon
Posts: 138
Thanks lads, no point in heading for the stealers for a fix then! MY15 D4 Causeway Grey
MY12 D4 Orkney Grey - Gone
MY07 D3 Java Black - Gone
13th Oct 2017 12:17 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The fan works although on some D4s the pipe to the HEVAC is kinked. The real fix is to add a resistor to the loom to reduce the current flow a bit to give the thermistor a chance.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 15 Mar 2016
Location: basingstoke
Posts: 49
Hi guys
Anyone got anywhere with a dealer fix for this?
Drove home tonight and had the temp on both heater controls set to 26 degrees as well as controlling the fan speed myself rather than leaving on "auto"
Member Since: 27 Feb 2011
Location: Wilts
Posts: 1376
Get used to it mate, it doesn’t get any better.
31st Oct 2017 8:38 pm
Somerset Bumpkin
Member Since: 08 Mar 2015
Location: Gosport
Posts: 234
Mine is fine once it's warm, it's just the blast of cold air when you first start her up that does my head in.
31st Oct 2017 9:06 pm
Keyframe
Member Since: 01 May 2017
Location: Epsom
Posts: 26
This is a very interesting thread, My 2012 D4HSE also has this exact fault. It's in the workshop of the supplying LR Dealer and they're firm in their opinion that the climate is "operating as designed". They were swift to point out that LTB00963 does not apply to my car and I'm unable to get them to physically investigate further despite having 12+months of LR warranty.
Any advice is welcome and gratefully received.
1st Nov 2017 6:50 pm
yellodisco
Member Since: 17 Nov 2010
Location: Penicuik
Posts: 118
Also suffering from similar issues - has to have heater set to 28 or HI to get warm air - anything else just blows cool air. Even when its on HI, I get cool air blowing up from windscreen vents. Wasn't a problem thro the summer but now that its turning colder, I'm getting the hot feet, cold head syndrome. I also asked for it to be checked out (under warranty) and was also told its "working to specification". Shouldn't have to wear a woolly hat driving a D4 in the winter months so as per post above, if anyone has any ideas for taking this back to dealer and making more of a fuss, that would be appreciated.
2nd Nov 2017 12:26 am
mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2521
Mines in for its annual service today with west 4 X 4
spoke to the switched on techie guy who sorted my gearbox change down happy issues earlier this year
again he was aware of this reported issue and has a possible solution based around Robbies thinking of insulation of the thermistor that regulates cabin temp
When i get it back today i will update you but he was aware of a TSB about this exact issue on MY 14 and newer vehicles. fingers crossed he has a fixMY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
8th Nov 2017 9:46 am
Armpit
Member Since: 08 Mar 2017
Location: Manchester
Posts: 53
Mark - any update on how you got on today at the dealers ?
Cheers - Paul
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