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Scothern96

Member Since: 22 Oct 2023
Location: Derby
Posts: 2

2007 Defender 110 Puma 2.4 XS CSW Santorini Black

Heated Windscreen Fault

Hi all,

I have recently purchased a defender 110 2.4 Puma XS. I noticed that the heated windscreen doesn't seem to be working. The light on the switch doesn't come on and there is no voltage reaching the screen.

I have checked for continuity across the screen and that seems to be fine. the switch is working and the fuse is fine. I noticed the relay doesn't seem to be actuating when the button is pressed so I swapped this with 1 I know to be okay but this has made no difference.

Can anyone suggest where I should look next?

22nd Oct 2023 7:35am

Evil Elsie

Member Since: 25 Feb 2023
Location: Cumbria
Posts: 202

Hiya,
Is it 'factory fitted' or an aftermarket screen..??
An aftermarket screen should/could have a timer relay between the switch and the power relay i.e. Pushing the switch in the dash starts the 'timer relay' off which energises the 'power relay'.

Good luck..

Dave. 2002 Land Rover 110 Td5 Utility
1990 Suzuki GSXR 1100L
1980 Yamaha RD 350LC
1976 Yamaha RD 400C

22nd Oct 2023 8:04am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17443

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Also note it will only work with the engine running, it will not work if you just turn on the ignition.

22nd Oct 2023 8:06am

Scothern96

Member Since: 22 Oct 2023
Location: Derby
Posts: 2

Hi,

This is a factory fitted screen but is does have a timer. Is there any way to check that this is working correctly?

I have tried it with the engine runner and the relay is still not activating.

9th Nov 2023 8:48pm

geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

Have you traced the earth? Should be a big one from the screen and a smaller one from the relay. Because the light is not coming on I suspect that power is not exciting the relay. Or the relay is faulty. Test whether the switch is getting 12v first then work towards the relay. Multimeter is your friend here. Just be methodical.

9th Nov 2023 9:13pm

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