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Intermittent 'Battery' warning light.
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Gobbler
 


Member Since: 28 Jul 2012
Location: Kent
Posts: 116

United Kingdom 2005 Discovery 3 TDV6 Base 5 Seat Auto Tonga GreenDiscovery 3
Intermittent 'Battery' warning light.

Getting an intermittent battery warning light on the dash on my 2005 TDV6.
Light will come on randomly, stay on for a while (an hour or so) then just as randomly go out. Might stay off for 20mins or so, then randomly come back on.
Battery voltage is OK (14.5v engine on, 12.8v off)
Any suggestions as to the cause?
I suspect the alternator is starting to break down (it's not had one, so 15y is pretty good going), but want to eliminate any other possible causes before I shell out £200 on a replacement.
All advice gratefully received.
Many thankingyous
Gobbler 😁 If it has TIT's or WHEEL's it will cause you problems!! Wink

Convoy for Heroes 2011-2016
www.convoy4heroes.org.uk  
Post #21717985th Sep 2020 3:37 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1793

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

I would check the earth connections as the system does not see the voltage you measured. If you have one of those voltage display "thingies" (technical term) that plug into the lighter socket you can see what the voltage is when the error lamp is lit. This will give you an idea of what the problem may be.  
Post #21718726th Sep 2020 1:09 am
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DISCO16
 


Member Since: 07 Apr 2008
Location: charente
Posts: 56

France 2006 LR3 4.4 V8 SE Auto Stornoway GreyLR3

hello,
mine did the same think a few month ago..
alternator was faulty, my local workshop pluged his "computer" and registered the voltage with engine running at different rpm, and was able to find that the voltage out the alternator was dropping down suddenly...so orange light!
alternator replaced ! all good now
cheers  
Post #21718846th Sep 2020 7:07 am
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Gobbler
 


Member Since: 28 Jul 2012
Location: Kent
Posts: 116

United Kingdom 2005 Discovery 3 TDV6 Base 5 Seat Auto Tonga GreenDiscovery 3

Yeah, that's what I'm suspecting it is - dodgy alternator.
I'll plug it in to the ICarsoft and see if that picks anything up, but I'll probably end up chucking a new alternator on it.... Rolling Eyes

Thanks for the replies. If it has TIT's or WHEEL's it will cause you problems!! Wink

Convoy for Heroes 2011-2016
www.convoy4heroes.org.uk  
Post #21721267th Sep 2020 10:22 am
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