Member Since: 19 May 2017
Location: Kettering
Posts: 421
Heated Windscreen
Heated screen not working having searched I’ve found a wiring diagram and have the following (In attached Pic)
Click image to enlarge
+12volt at terminal C0362-1
+12 ignition at terminal C0570-68
Both outputs (fuse 15 and 18 ) go to earth with resistance so I assume it’s going through the screen elements, not had trims of yet to check terminals.
I’m getting no switched earth to trigger the relay on terminal C0570-67, which I assume is earthed via the ATC Module?
Everything else on the ATC works rear screen, seats etc
Am I missing something or is the ATC Goosed?
Suggestions welcome
M6NIO
12th Aug 2017 4:50 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Ensure engine running and voltage good 14?
Is the switch lighting up?
Could be a wiring problem.
Check at the rear of the panel.
12th Aug 2017 6:58 pm
mick_n3
Member Since: 19 May 2017
Location: Kettering
Posts: 421
14 volt, new battery and alternator
Switch does light up
M6NIO
12th Aug 2017 9:47 pm
ECM
Member Since: 30 Dec 2009
Location: Aberdeen
Posts: 3
You can sometimes access the terminals by pulling back the trim slightly from the screen, no need to remove them. From memory its a big spade terminal. The relay should receive +12v from the ATC by the look of it.
Only the left side of my screen works (typical!), the right side only works now and again! There appears to be no good reason for this!
In fact I suspect there could be a fault with the screen itself. I doubt its an original LR screen and suspect the replacement part is inferior.
4th Sep 2017 11:49 pm
Rufflyer
Member Since: 21 May 2014
Location: Houston, Texas
Posts: 25
Same issue, (sort of)
I just got this 07 SE a few weeks ago after the hurricane left and it has the top and bottom buttons for the defrost / rear window heaters, but unlike my HSE I had, it does not have a middle button for just the front wind shield.
I have wires in windshield, fuses 15 & 18 in the fuse box and relays listed for the windshield next to them in the junction box under the hood (uh... sorry, bonnet), but no switch.
Still sorting it out since the car moves and gets me to work and it is summer here in Houston Texas so this feature won't be needed for awhile. The diagram and other info here will help when I get to it.
Jeff2010 LR4 w/ Kenwood Ham Radio
2007 LR3 w/ Taxride dual battery setup; Front runner full roof rack w/ holders for 4 Jerry cans; Garmin GPS w/ wireless backup camera; iiDTool Bluetooth: Icom 7000 Ham Radio Polybush ugrade on all control arms.
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