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C4 - DS4 Owners :: Forums :: Citroen C4 Picasso and Grand C4 Picasso (B78) 2013 onward :: C4 Picasso (B78) General Questions

Outside temperature warning

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iscom   
Mon Dec 16 2019, 07:41am
Member No: #20936
Joined: Jul 21 2011
Location: Ireland Fermanagh & Galway
Does the low temperature warning not work on the B78 cars? I am sure it did on the older models I think it would display something like "Danger of Ice" once the temperature reached around 2c or 3c
vexorg   
Tue Dec 17 2019, 03:30am
Member No: #48843
Joined: Jul 06 2017
Location: Scotland
The DS4 of same age still has it, "Danger of ice" when it hits 3°C
proinnsias   
Tue Dec 17 2019, 04:59am
Member No: #43821
Joined: Feb 21 2016
Location: Dublin
Works fine on mine (mid 2016) B78 C4GP ...
iscom   
Tue Dec 17 2019, 07:11am
Member No: #20936
Joined: Jul 21 2011
Location: Ireland Fermanagh & Galway
I have the new Citroen mirror Link unit (fitted a few months ago)
The Temp was -1 and even when it 4c and temp started to drop the was no warning or flashing as in other C4GPs I have had, unless it has to be set
But will have a closer look
Richard_C   
Tue Dec 17 2019, 07:30am
Member No: #46470
Joined: Oct 11 2016
Location: Cambridge
Pre facelift early 2016 temperature display flashes below 3, nothing more dramatic than that.

The 2017 C3 yells at us on startup, big "danger of ice" writing on the display.

If we need a dashboard display to warn us the road might be slippy its worrying. Eyes, ears and common sense should triumph.
vexorg   
Tue Dec 17 2019, 07:40am
Member No: #48843
Joined: Jul 06 2017
Location: Scotland
How do your eyes and ears detect icy roads, or black ice?
The roads look much the same if +5°C or -5°C, certainly don't sound any different.
iscom   
Tue Dec 17 2019, 01:34pm
Member No: #20936
Joined: Jul 21 2011
Location: Ireland Fermanagh & Galway
The only sign I get is at 3c & 1c is the Ice icon no text or flashing . . . The fist thing I do when going out in frosty weather is test the brakes and then I only travel via the major roads not the minor roads
vexorg   
Wed Dec 18 2019, 03:44am
Member No: #48843
Joined: Jul 06 2017
Location: Scotland
In older cars, without power steering, you could feel it go lighter. Not sure I'd recommend a brake test to the average driver unless they know how to handle a slippy road.
Wutang   
Wed Dec 18 2019, 08:02am
Member No: #46858
Joined: Nov 24 2016
Location: London
mine is a 2014 and it puts up a big message Risk of Ice on the dash and the snowflake next to the temp and temp flashes at 3C and below.
dmpzsn   
Wed Dec 18 2019, 12:18pm
Member No: #25128
Joined: Apr 09 2012
Location: Somerset
My car is an 18 plate, this morning it was -1 and I only saw the snow flake beside the temp indication, earlier C4s had the flashing warning
Richard_C   
Wed Dec 18 2019, 02:27pm
Member No: #46470
Joined: Oct 11 2016
Location: Cambridge
vexorg wrote ...

How do your eyes and ears detect icy roads, or black ice?
The roads look much the same if +5°C or -5°C, certainly don't sound any different.


Well those were the only aids to motoring we had back in the '60s and I'm still alive. Up on the moors in Devon, winters seemed colder then. Hillman Hunter and a motor cycle

Look around, verges, fields, look at shadows under trees, reflections, puddles at edge of road, that detects risk of ice which is all the gauge does. Ears (if you open the window a bit occasionally instead of sitting is a silent cocoon - really worth it in thick fog) - tyre sound does change a bit from dry to wet and if it looks wet but doesn't sound wet its probably icy. Common sense - which way am I going, is this steep hill north facing (more likely to be icy) or south facing, when did it last rain, how high am I, did I have to scrape the windscreen this morning, is the screen wash freezing on the screen, are dead birds falling from the sky (OK that last bit probably only happens at -30) ....

No single thing will tell you and I agree black ice is hard to detect but you add all the evidence constantly. The temperature gauge, if you have one, adds to the evidence but isn't the totality of the evidence and may well be the least important input. We did without for years.

You slide off and hurtle over the edge of a handy roadside precipice thinking to yourself on the way down '...well that's a surprise - the temperature gauge wasn't flashing and the satnav said the limit was 60 so I should have been fine......'
routemaster1   
Sat Dec 21 2019, 05:39am
Member No: #574
Joined: Jul 08 2007
Location: Dorset
IIRC, if you start the car when it is 3 or below, you only get the temperature displayed with a blue snowflake beside it. If you are driving and the temperature falls as you drive, you do get an alarm and a big visual warning.
1 User said Thank You to routemaster1 for this Post :
 iscom (21 Dec 2019 : 06:23)
 

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