Member Since: 22 Jun 2011
Location: southampton
Posts: 2477
Couldt get over to pick it up tonight so picking up tomoz will update asapMY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
8th Nov 2017 9:43 pm
mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2477
picked the car up this morning but unfortunately the techie who did my job wasnt in today as off with the lurgy
any way via another guy i was told that the insulation foam that wraps the sensor was poorly fitted and they re insulated it and moved it slightly away from the duct .also carried out an HVAC software update
the result
now once the car is warm if i turn the heating up i now actually get some warm airflow via the dash vents although i wouldnt describe this as full force ,but it didnt do anything before so this is a difference
but i cant be sure if this is a s a result of the software uodate or the sensor work
hope this helps
the sensor is located behind the trim panel that surrounds the middle right dash vent so stikes me as something that can be done as a DIY i will take this off the weekend and have a look myself now i know were it isMY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
9th Nov 2017 11:24 am
Somerset Bumpkin
Member Since: 08 Mar 2015
Location: Gosport
Posts: 234
Mines going in to finally get this fix. I hope it works as it’s doing my head in. My middle right vent doesn’t actually work (ie. I can’t open or close it) so I hope that’s part of the problem.
25th Nov 2017 10:39 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Helping the sensor work as intended can only improve matters but it does nothing for the self-heating of the thermistor. So on longer journeys the repeated nudging up of the dial will still be needed.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 27 Feb 2011
Location: Wilts
Posts: 1376
It should work regardless!
25th Nov 2017 12:38 pm
mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2477
after a few long trips i can say its better but still not right after half an hour have to turn it up to 26 to keep temp descent and i still think the high level vent mix is wrong i do now get some warm airflow out of mid vent but nothing from the side and i think this is key as the cold from the side window needs side vent warm airflow to negate got home from a long run with a very cold right armMY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
25th Nov 2017 4:58 pm
NoosaMick
Member Since: 29 Oct 2017
Location: North
Posts: 4
Previously owned a RRS with FBH and it worked to heat the car up in just a few minutes and temps set to 21 would keep the car warm and comfortable.
I've now owned my D4 MY12 for three weeks and have found it very slow to warm up inside (FBH tested and is working) Also been driving around with temps set to 26 to keep warm and wife has to leave seat heat on all the time.
Definitely feels like the sensor is not correctly measuring the cabin temperature. It seems to work for a short while from start up, then starts blowing cold air, as if the sensor is now detecting the cabin has got too hot.
I'm wondering if this can be fixed by repositioning the sensor?
Also, reading above that the sensor is 'self heating', then maybe fitting a simple heatsink could help.
Am I right in thinking it's located behind to small grill to the side of the steering column?
25th Nov 2017 10:46 pm
lespes
Member Since: 17 Sep 2009
Location: Sitting Down
Posts: 2232
Last couple of days in cooler weather gave me a chance to play with lots of different settings over several long journeys.
What I found was that on virtually any setting cool air was still coming from the upper dash vents.
Eventually decided to switch these vents off manually and put the settings back to normal Auto operation set at 21c.
What an improvement! Temp remained steady felt warm and cosy and no other temp adjustment needed. Felt much more like it used to in previous models I have had.
I did find that the side window was still a little colder as no warm air hitting it at all but as no cool air coming from dash vents a major improvement overall in cabin comfortD4 Landmark MY16 Santorini Black THE LAST
D4 HSE MY12 Marmais Teal: Gone. Missed a lot!
Freelander 2 SD HSE MY11 Silver:Thankfully gone.
D4 HSE MY11 Silver: Gone missed !
Range Rover Sport MY06 HSE Buck Blue: Gone missed!
Discovery D2 TD5 Facelift MY Red Gone Missed!
Discovery D2 TD5 Cobalt Blue: Gone Missed!
Discovery D1 Auto Oxford Blue Not missed at all!
Discovery D1 Avalon Blue First LR! missed!
Now demoted to a VW
7th Dec 2017 12:40 am
mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2477
the old D4 heating issue
well as its nearly easter so i though id go for a resurection
did anyone ever solve the ssue with the later D4 poor heating contol of the cabinspace due to blowing cold air out of the upper vents once at temperature
ive prob got used to it but gave a friend a lift recently who commented how cold the cabin space felt to the point that on cold days we now take his car when needed ......saves a few quid on diesel for me mind MY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
Get a dark piece of card and wedge it over the "dongle" in the centre of the dash immediately behind the windscreen. This is the solar sensor, and the HVAC logic is pretty binary: Bright Light = sunshine = heat in top of cab, so switch upper air vents to cold air.
If you cover this sensor, the command to cool the air in the area over the dash / driver upper body is suppressed.
You'll want to remove it when the weather gets warmer though!I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
15th Mar 2023 1:57 pm
mark the spark
Member Since: 22 Jun 2011
Location: southampton
Posts: 2477
will give that a go , did anyone work out what changed afer 2012 to make it go so naff as both my earlier MY05 and MY12 models were perfect and im sure had the same "looking"dongle thing fittedMY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
15th Mar 2023 3:08 pm
wireworld
Member Since: 19 Oct 2013
Location: Shropshire
Posts: 145
I never solved it. My wife now just puts something over her legs and we run the temp at 25 degrees. Never had a car with such a heater problem
15th Mar 2023 3:12 pm
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18444
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