 | Home > Td5 > Heated Rear Screen |
 
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| NickEJ Member Since: 24 Nov 2012 Location: Ljubljana Posts: 152   
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I have a 2004 Td5 XS CSW and for some time the heated rear screen hasn't been fully functional. The screen has two elements and the lower one works fine but not the higher one. With winter coming on I thought I'd have a look at it and I've checked the element and all is fine with that, as is the wiring down to the first connector (C0704) behind the rear speaker panel on the driver's side. I have discovered though that there is no power on the Green/Purple feed in socket 2 of the C0704 connector which seems to be the supply for the upper element. Checking the fuses and relays there only seems to be one relay and fuse for the heated rear screen yet there are two live wires (although one is dead). The wiring diagrams I can find only show one supply.
Do both live feeds come from the one relay/fuse? If so I must have a dodgy connection somewhere on the green/purple line which I can trace but just want to make sure there isn't another relay somewhere..... |
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27th Nov 2018 3:22pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324 
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The green/purple wire is the feed to the high level brake light. The other 'element' that you mention is the earth for the brake light.
The heated screen is all one element so if only part of it is working then there's a break in the tracks somewhere. A common point of failure is where the tracks pass under the high level brake light housing as the latter wears the former away. Later screens are altered to take those tracks around the housing. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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27th Nov 2018 3:29pm |
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| NickEJ Member Since: 24 Nov 2012 Location: Ljubljana Posts: 152
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Cheers Darren, only I'm now confused.
The heater element has three connections - two on the right being the handle side and one on the left by the hinges. The lower half of the screen shows power at the connector when it's working and the other one doesn't. Both elements show continuity so I assume they are OK. I've also traced both live cables back to the connector and each has a separate plug and each shows continuity to the plugs mentioned for the C0704 connector but only one feed has power for the relevant socket. Is there only one relay? In which case could I not splice a cable onto the working live to get the other element going? Are two elements to improve performance? |
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27th Nov 2018 3:45pm |
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| NickEJ Member Since: 24 Nov 2012 Location: Ljubljana Posts: 152
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Darren
Just re-read your reply and less confused.....I'll have another look in the morning when it's light! |
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27th Nov 2018 3:49pm |
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I cannot figure this one out either. | Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6300  
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does the heat element on the glass run under the plastic housing that covers the high level brake light?
if it does then it's quick possible / likely that it's worn away the heater element creating an open circuit. ....not sure that the fix is though? |
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27th Nov 2018 3:49pm |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 942  
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Yes it does and as I said there is continuity throughout though?
 Click image to enlarge 2010 Range Rover MkIII Autobiography Super Charged (Idris) 2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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27th Nov 2018 3:57pm |
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| NickEJ Member Since: 24 Nov 2012 Location: Ljubljana Posts: 152
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Caterham - a new rear window seems the quickest option at the moment!
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27th Nov 2018 3:57pm |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 942
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Over here you can pick up a copper paint like product at almost any automotive store and paint on lines to complete the circuit if it is found to be worn or broken.
https://www.amazon.ca/s/?ie=UTF8&keywo...2t1t9gvu_e 2010 Range Rover MkIII Autobiography Super Charged (Idris) 2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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27th Nov 2018 4:05pm |
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| Adam17 Member Since: 15 May 2018 Location: Within Bedfordshire Posts: 1193 
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mine is temperamental, but I thought that was due to the element coming away from the glass in a couple of places.. I need to get a volt checker thing and test them now.. Regards
Adam Loving The Duchess The Defender 110 TD5 XS My Defender story - http://www.defender2.net/forum/topic64005.html |
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27th Nov 2018 4:14pm |
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| Adam17 Member Since: 15 May 2018 Location: Within Bedfordshire Posts: 1193
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is that really possible?? that's a great idea... Regards Adam Loving The Duchess The Defender 110 TD5 XS My Defender story - http://www.defender2.net/forum/topic64005.html |
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27th Nov 2018 4:15pm |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 942
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Adam17 yup I have used it on previously owner cars and it works for years. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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27th Nov 2018 4:52pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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I've just re-read my reply and realised I didn't explain part of it properly. There are three connections on the screen - two on the right and one on the left. The two right hand ones are power to the heated screen and brake light respectively. The one on the left is the common earth for both devices. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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27th Nov 2018 6:00pm |
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| NickEJ Member Since: 24 Nov 2012 Location: Ljubljana Posts: 152
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Thanks Darren,
Once I’d re-read your post, thought about it and then went and had a look it all became clear. Thanks for that. Looks as if it’s something I’ll have to live with. Seems the angry pixies don’t go all the way to the top of the screen. I’ll take the cover off the brake light in the morning and see if I can see any breaks in the element. |
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27th Nov 2018 6:06pm |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2848
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Mines the same, the top part of the element doesn’t work. It was the same on both our 90 TD5’s and l assume it’s the high level brake light wearing through the element at the top.
A continuity test will show a circuit in these broken tracks as the elements are in parallel between the positive and negative lines. So if you put a meter across the top element between positive and negative it will show a circuit as the rest of the elements are still good. |
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28th Nov 2018 8:53am |
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