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Discussion Starter · #1 ·
So I did some searches on here and didn't see anything regarding this issue. However, when i google around i see that this appears to be a common problem.

Does anyone on here have the issue were the temperature gauge drops down to -32 degrees or some random low number. When this happens its impossible to get the AC to work since the AC seems to be tied to the temp gauge. It just blows out hot air. I make this post for two reasons first is has anyone had this and had it fixed? Second reason is according to the thread below LR knows of this issue and is working on a software fix that has either come out or is coming out.

Here is another thread talking about it as recently as yesterday.
https://www.discosportforums.co.uk/viewtopic.php?t=5503&start=10
 

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We've started having this issue intermittently lately on our 2017 HSE. The other night I was just shuffling the cars around in the driveway and it said it was -40 (centigrade) outside. Yes, this is Canada, but it was actually around +20! Didn't have to drive any distance, so I wasn't affected by it, and the next morning it was accurate again. One other time I've also seen an odd temperature, but it's cleared itself.

If this becomes a common occurrence I'll definitely contact the dealer, but for now there would be no way for them to confirm the issue when it happens so rarely.
 

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Discussion Starter · #3 ·
We've started having this issue intermittently lately on our 2017 HSE. The other night I was just shuffling the cars around in the driveway and it said it was -40 (centigrade) outside. Yes, this is Canada, but it was actually around +20! Didn't have to drive any distance, so I wasn't affected by it, and the next morning it was accurate again. One other time I've also seen an odd temperature, but it's cleared itself.

If this becomes a common occurrence I'll definitely contact the dealer, but for now there would be no way for them to confirm the issue when it happens so rarely.
So ours does the exact same thing 2017 HSE. It doesnt happen all the time but probably 10 times since i have owned it (oct 2016). It has acted up more recently for us though. I wouldnt even think twice since it generally resets itself but with the air conditioning being tied to the temp gauge it is a must fix for me.
 

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Hight Temperatures causes car to fail

Hi Guys, with have a discovery Sport and this is the second time that the dealer has taken it back to fix an issue when the temperature outside is over 42 degrees (Very hot). The dashboard light up like a Christmas tree and the power steering turns off. The car becomes very heavy to drive.

The dealer has outlined that this has never happened before with these cars but based on this forum it looks like this happens more often.

Has anyone experienced this issue and how was it resolved.

Cheers

Kim
 

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Just a bit of info which might help. The temperature shown on the drivers display is not produced by the sensor in the wing mirror. This sensor only affects drivetrain / engine performance / auto stop etc.
I’m pretty sure that the temperature on the driver display is from the ambient air sensor within the HVAC unit. I’m not sure if this is easy to get at to test / change if faulty as it is situated within the air box.
I have had issues with mine showing incorrect temperature (only happens if stopped for a short period).
I had my battery disconnected for an extended period recently (EGR clean) and I haven’t noticed the problem since then, so a disconnect of the battery for a few hours may help. Also seems to have cleared an intermittent comm. fault on the infotainment system which may be associated.
 

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2016 DS HSE Auto Gas/petrol
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Climate Control - Ambient Air Temperature Sensor
Removal and Installation
Removal
The ambient air temperature sensor is an integral part of the
door mirror and cannot be removed. A new door mirror must be
installed.
Refer to: Exterior Mirror (501-09, Removal and Installation)
 

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Yes the Land Rover service info does suggest that, but it’s incorrect. The door mirror sensor does not display the temperature in the instrument panel, it only affects engine / transmission. This is shown when looking at live data within the PCM and can differ from the figure shown on the driver display. Also if you artificially heat the mirror sensor the driver display temperature does not change…..(not in my vehicle anyway).
There is an ambient air temp sensor within the HVAC unit which I presume displays on the instrument panel, although as you correctly point out Land Rover data seems to suggest otherwise.
 
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