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mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2531
 
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the heating control in the MY14-16 is total pants!!
ive read all the threads had all the TSB work done wrapped the precious cabin sensor in new foam and all that and it still cuts off heat from the high level vents and pumps freezing cols air at you once up to temp !!
has anyone actually got this sorted . both my previous MY05 & MY 10 were perfect and a colleague has just got an MY17 Full fat RR and thats perfect by mine well you need a jacket on to go any distance in the winter as your forever turning the temp up in an attempt to get a decent cabin temp its ridiculous MY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
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 16th Dec 2024 9:41 am |
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Moo
D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14481
  
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Interesting. Didn't know this was a known issue.
My new to me D4 can be intermittently either hot or cold or working fine, although I have to ignore the temp on the dials and wind them up to get heat. It's also not biased to either side. Anyway, its going in on Friday to be sorted by the dealer. D4 HSE EU6 (Known as Jeeves)
New Defender L663 110 SE (known as Noddy!) Sold
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner 
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
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| 16th Dec 2024 10:06 am |
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mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2531
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sadly this caused a lot of debate when my 14 came out but everyone gets stonewalaed by landrover with its working as the design intent story ...but no way is it right MY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
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| 16th Dec 2024 1:17 pm |
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eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 810
 
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 my 2013 does the same haven't really thought of it as a problem more an annoyance
i tend to have my dial set at 19 degrees even in winter and as a result its not long until it starts blowing cool air then all i do is turn the dial up by 1 degree at a time please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
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| 16th Dec 2024 5:37 pm |
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defector
Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1476
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I've found in other cars that the internal temperature sensor gets caked with dust which makes it inaccurate.
Either cleaning it or blowing at it with high pressure air can sometimes help - I've used those duster cans with a straw in the past.
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| 16th Dec 2024 6:13 pm |
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Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1682
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The D4s have done it from new. It’s a technical/design fault. Gary
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Discovery 4 HSE 2016MY
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| 16th Dec 2024 6:49 pm |
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DaveT
Member Since: 01 Aug 2005
Location: Cornwall
Posts: 2578
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I went from a 2013 car with perfect heating, to a 2015 adblue, with the well known at the time "3 degree error" and heating that would get progressively colder (several detailed posts from me on this at the time, theres a few threads about it, and an 'invite only' forum area).
The fact that the display was about 3 degrees 'out' never bothered me at all. The fact that the car was freezing was an unacceptable problem. My fingers would literally go blue!
Never really solved it. Definitely not worn out components or dust etc - it was a brand new car. They changed the software in some way at about the time adblue was added & lower emissions figure hit.
The only relevant or useful thing I did notice is that the problem was way worse in low sun - morning or evening. If the road turned into the sun, the AC would blow colder air. I believe the sensor on top of dash (centre) was overriding the rest of the logic of the AC and saying: sun is shining into cabin, therefore 'counter' this by adding cold air...
I ended up rejecting the car. The replacement 2016 car is way better, but not actually as effective as 2005 /2006 / 2007 / 2013. Long succession of Disco's since 2001...
SIII Lightweight - neglected & rusting. Bulkhead, A panels, vent panel & outriggers now disintegrated - Next years project!
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| 16th Dec 2024 9:14 pm |
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Sundayjumper
Member Since: 23 Sep 2024
Location: Berkshire
Posts: 110
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Interesting, I didn't know any of that as I'm still new to D4 ownership, but the other day it seemed like my heater suddenly wasn't very warm. I had to put both sides up to max (28°) to be comfortable. Previously I'd tended to have them around 22-24. Outside temp was about 12 at the time, it wasn't even cold out there !
First thought was thermostat but diagnostics showed coolant temp to be correct at 88±1 degrees.
So I guess it's just another bit of bad design from LR.
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| 17th Dec 2024 3:53 pm |
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DaveT
Member Since: 01 Aug 2005
Location: Cornwall
Posts: 2578
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If you want to get really depressed, watch the latest episode of LRTime on you tube, cleaning/replacing the heater matrix. Scary. Long succession of Disco's since 2001...
SIII Lightweight - neglected & rusting. Bulkhead, A panels, vent panel & outriggers now disintegrated - Next years project!
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| 17th Dec 2024 9:06 pm |
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Moo
D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14481
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I saw  Bit of a design flaw.... D4 HSE EU6 (Known as Jeeves)
New Defender L663 110 SE (known as Noddy!) Sold
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
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| 17th Dec 2024 9:07 pm |
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