CJRH Posted December 7, 2011 Share Posted December 7, 2011 I have used the search function and found this topic: http://forums.lr4x4.com/index.php?showtopic=33569&hl=%2Bheated+%2Bwindscreen&fromsearch=1 I have checked all of the fuses in the cabin and engine bay fuse boxes, the connectors under the bonnet for the heated screen are good (like new) and there is power to both connectors when I turn on the heated front screen but the heated screen is not working? Any ideas? Thanks, Chris Quote Link to comment Share on other sites More sharing options...
teabag Posted December 7, 2011 Share Posted December 7, 2011 If the supplies at the screen is ok, then u have a faulty element/s in the screen. Quote Link to comment Share on other sites More sharing options...
CJRH Posted December 7, 2011 Author Share Posted December 7, 2011 There is a small crack in the windscreen about 1" long, passenger middle, would that be enough to stop the whole screen from working? Chris Quote Link to comment Share on other sites More sharing options...
teabag Posted December 9, 2011 Share Posted December 9, 2011 I have just a small chip and that gives me a 4 inch vertical band not working on the drivers side, lucky a D1 has two elements. Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted December 9, 2011 Share Posted December 9, 2011 I have used the search function and found this topic: http://forums.lr4x4....en&fromsearch=1 I have checked all of the fuses in the cabin and engine bay fuse boxes, the connectors under the bonnet for the heated screen are good (like new) and there is power to both connectors when I turn on the heated front screen but the heated screen is not working? Any ideas? Thanks, Chris Yes you will be needing an earth as well as a supply...... Quote Link to comment Share on other sites More sharing options...
teabag Posted December 9, 2011 Share Posted December 9, 2011 Yes you will be needing an earth as well as a supply...... Good point... but the OP did say " the connectors under the bonnet for the heated screen are good" Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted December 9, 2011 Share Posted December 9, 2011 Good point... but the OP did say " the connectors under the bonnet for the heated screen are good" He certainly did,but they are two pin plugs,one is a supply the other is going to earth - he says the supply is good,no mention of checking the earth.It is common for parts of a heated screen to go open circuit,but not all of it.So a lack of decent earth would seem to be a good starting point ? Quote Link to comment Share on other sites More sharing options...
Chris.Ryan Posted June 11, 2017 Share Posted June 11, 2017 Hi, I also have a non functioning heated front screen. I found the relay was missing and I suspect the windscreen may have been changed at some time in the past. I replaced the relay but there is still no activation by the switch. I have checked all the fuses, tried the rear demist switch on the front demist connector to rule out a faulty switch, and opened up the BCU and found no sign of damage. There is no power at the connectors in the rain guttter. I got the circuit tester out and found very low voltage, around 0.15v at the switch connector on the operating and tell tale light pins. Testing was done with the air con on demist. Could something in the BCU have failed and no longer pushing through the power? Thanks, Chris Quote Link to comment Share on other sites More sharing options...
sierrafery Posted June 12, 2017 Share Posted June 12, 2017 Hi, you have to plug in a proper tester to enable the heated front screen function in the BCU settings Quote Link to comment Share on other sites More sharing options...
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