yogi972
Member Since: 05 Jun 2011
Location: Kineton
Posts: 3372
  
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 spot on KP
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 18th Jan 2012 10:53 pm |
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CUCO
Member Since: 27 May 2011
Location: Spain & Oleee!!!
Posts: 609
 
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Sorry, I read the tread only in part, I have read it again, and assuming that the spade conectors are the ones that conect the electrical cable to the windscreen, so if you checked it, you have heatd version.
To test if you have electrical power, you could use a 12v lamp or bulb and a pair of wires if you don have a multimeter, conect a wire to one spade conector and the other one to the other conector, and the same at the other tip of the cables but to the bulb. If there is light when you conect heated windscreen (do no confuse with hot air defroster button at climate control panel) then, something wrong in the windscreen, if not, then double check all wiring, includind the inside fuses panel conectors, the ones that are embedded inthe fuses panel and crimps the fuse metal "legs", sometimes they get loose and fail or overheat, check ALL THE FUSES, whatever rating and size, if all fuse are ok, then go to the relay and try to hear if it clicks.
These are the two things to test in a first aproach. Next is that the relay is doing his work conecting and disconecting, easy to check swapping with a similar relay and testing for power at the spade conectors with the bulb as before.
It could be the climate control panel at the end or a internal cutted cable, but...maybe I would start with this checkpoints befor thinking it this last 2 situations.
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| 19th Jan 2012 1:38 am |
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Coolhurst
Member Since: 09 Nov 2010
Location: Cirencester
Posts: 64
 
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Thanks all for your replies. It's definitely a heated screen (can see the thin wires) and was fitted by Autoglass so I'll check that power is getting to it before calling them out as a last resort.
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| 30th Jan 2012 2:34 pm |
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crews control
Member Since: 18 Mar 2007
Location: Dorset
Posts: 5011
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If you look at the front of the 'A' pillars, from outside the car, can you see the screen ribbon connectors through the glass on both sides? The Chinese copy glass that Autoglass often fit usually has bright yellow connectors that don't hide behind the interior trim properly. Apart from looking rubbish, I've found these heated screens rarely work properly for more than one winter.
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| 30th Jan 2012 4:11 pm |
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Coolhurst
Member Since: 09 Nov 2010
Location: Cirencester
Posts: 64
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crews control wrote:...ribbon connectors through the glass on both sides...The Chinese copy glass that Autoglass often fit usually has bright yellow connectors...
From memory mine look sort of gold foil but will clarify when I get round to attempting a fix on Saturday.
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| 2nd Feb 2012 3:36 pm |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26742
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The heated windscreen can be inhibited by low voltage. The car's 'brain' has a strategy for preserving power, including inhibiting the heated screen and seats, washers, mirrors etc.
I find that on a cold morning it really helps to speed up the thawing process if you hold the revs at 1750 for a minute or so. This gets the alternator working to full power, and raises the system voltage sufficiently to enable operation of the screen.
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| 2nd Feb 2012 4:45 pm |
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dadon
Member Since: 06 May 2015
Location: Northants
Posts: 482
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I thought I will revive this topic rather than create a new one.
My issue:
N/S of my screen works and O/S (drivers) side doesn't. Perfectly split in the middle.
Can this be caused by broken wire in the screen or spade connector being loose in O/S A panel?
Can this be somehow connected with drivers seat not heating but passengers seat is nice and cosy warm?
Cheers Disco 3 HSE (55) - gone
BMW x3 (62) x30d MSport - current
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| 23rd Nov 2015 2:21 pm |
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Sloss
Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691
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Reading this thread the first thing to check are the 2 fuses as detailed by Russell then check for actual power going to screen at connectors.
I think there's a relay in the mix someplace too  Stew,
2010 D4 gone but I really loved it
Went back to Merc - C350 AMG
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| 23rd Nov 2015 3:36 pm |
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Sloss
Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691
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Just been to collect grand weans from Skool and realised that if I switch on the heated screen the voltmeter I have in the cigar lighter dips to ca 12.5 then comes back to 14.5 quite quickly.
That shows a big draw so my screen is working Stew,
2010 D4 gone but I really loved it
Went back to Merc - C350 AMG
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| 23rd Nov 2015 4:49 pm |
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