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Nonterraquous



Member Since: 16 Apr 2023
Location: Fife, Scotland
Posts: 9
Scotland 2015 Range Rover Vogue TDV6 Causeway Grey
Heated windscreen fault

Does anyone know what the heated windscreen wiring colours for a 2015 3.0 are?

The screen in my car isn't working, the fuse and relay appear to be OK.

I removed the A pillar trims and found the sceen ribbons connected but also a couple of heavier wires that aren't:
N/S - white/blue connected, violet/brown disconnected.
O/S - black connected, yellow/white disconnected.

Click image to enlarge

Click image to enlarge

The connected white/blue and black wires do nothing that I can find.
The violet/brown and yellow/white both go to 14V (engine running) when the heated screen button is pressed.

I've had the car since April and I'm not aware of the screen being replaced, no tell tales that I can see with a quick glance. The heavier gauge, and that it's a 40A circuit suggest to me the wires should be the other way around, but then what do the white/blue and black wires do?

Any help appreciated!
Post #676206 23rd Oct 2023 10:48am
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stan
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the smaller plug is for the element that warms up the wipers..unless you have this feature then there will be no power from this plug..

the larger plug is for the windscreen heating elements.. ... - .- -.




Y. O. L. O.
.
Post #676208 23rd Oct 2023 10:57am
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Nonterraquous



Member Since: 16 Apr 2023
Location: Fife, Scotland
Posts: 9
Scotland 2015 Range Rover Vogue TDV6 Causeway Grey

Thanks for that Stan, and for the link to the workshop manual! Smile The heavier cables are indeed for the heater elements and the others for wipers (not on mine).
Post #676211 23rd Oct 2023 11:18am
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stan
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Thumbs Up ... - .- -.




Y. O. L. O.
.
Post #676214 23rd Oct 2023 11:30am
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RRBlue



Member Since: 23 Feb 2012
Location: Cambs
Posts: 222
England 2005 Range Rover Vogue SE 4.2 SC V8 Buckingham Blue

Nonterraquous wrote:
Thanks for that Stan, and for the link to the workshop manual! :) The heavier cables are indeed for the heater elements and the others for wipers (not on mine).


I have checked mine also. My nearside does not work. The violet cable is connected to the windscreen ribbon and the blue one is disconnected.

I checked the voltage and cn't get a sensible reading from either. As there is only a single relay, I assume the windscreen or the cabling from the relay to the windscreen is damaged. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8
Post #704632 17th Nov 2024 11:57am
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