 | Home > Td5 > Battery not charging warning light |
 
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| williamthedog Member Since: 29 Dec 2012 Location: south wales Posts: 3441  
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You really need a multimeter on the battery to check the voltage going back into it. Whilst running it should be around 13.5- 14.5v
If it is at least you know its charging and you can rule out the alternator  |
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16th Jul 2018 1:00pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5736  
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Should have said the two volt meters main and aux batteries both drop towards 12.xV. Weird thing is after leaving the car for an hour or so and then drove off the battery stayed off but then after about 10mins the light came back on. 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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16th Jul 2018 4:34pm |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2196 
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You could check fuse 6 on the bulkhead (10A) just in case as i believe that feeds the alternator. As it an intermittent issue though i cant see it being the fuse sadly. I think that fuse also does the reverse lights.
Steve 02' 110 TD5 Double Cab Rebuild Thread 84' 90 3.9 V8 Caged Pickup Build Thread - Now For Sale Mobile Diesel Heater Build Thread |
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16th Jul 2018 4:50pm |
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| Mash Member Since: 09 Feb 2015 Location: Guernsey Posts: 1674  
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On the Wolf I had an intermittent charge warning light, turned out to be the alternator was only giving out 24ish volt on tick over and 25/26v on higher revs not 28v, (wolfs run a 24v set up not 12v like the civilian wagons) so it could keep the wagon running happily and on a normal run recharged the batteries fine, I think I ran it for a few months before tracking down a new alternator, admittedly it’s a simpler engine with no Engine ecu constantly drawing power. 90 wolf - Jasmin http://www.defender2.net/forum/topic39408.html
90 V8 - Maggie http://www.defender2.net/forum/topic42564.html 110 TD5 - Buggsy http://www.defender2.net/forum/topic59029.html 52HG25 lightweight https://www.defender2.net/forum/topic72342.html D3 Hse - Fiona Capri 2l S - Anna Think I might have a problem............ |
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16th Jul 2018 9:24pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5736
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I think I have found the issue. On measuring the battery voltage I noticed the relay for the split charge was clicking in and out and the engine tone was altering.
Unplugged the feed that detects 12v and the relay stopped clicking in and out. Tomorrow i will head out for a drive and see what gives. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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16th Jul 2018 9:46pm |
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| VeeTee Member Since: 06 Mar 2011 Location: Somewhere Posts: 1512 
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I think the clicking relay is not the cause of the problem, but the consequence of the voltage just going around the value at which the relay activates, (i.e. a to low voltage) due to either a faulty battery or faulty alternator.
Did you measure the voltage at the alternator output while revving at approx 2000-2200 rpm? Cheers, Vincent 1959 Polynorm 1/4 Ton Trailer, Olive Drab Green (sold) 1970 M416 Military Trailer (Camping Trailer Conversion), Epsom Green (sold) 1975 Series III 88 V6, Light Green (sadly sold) 1996 Defender 110 CSW 300 Tdi, Epsom Green (sold) 2000 Freelander 1 TD4 3-drs, Silver (sold) 2006 Freelander 1 TD4 5-drs Facelift Automatic, Tonga Green (sold) MySite |
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16th Jul 2018 9:57pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039 
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By experience I know that you can drive about 200 km on a good battery without using lights but while pulling a trailer. The first thing that stops is the rev counter followed quickly by the speedometer. On that moment you can not restart the engine if you need to.
I am afraid it will be the altenator probably the brushes. You might be lucky if just one is a little stuck. I never tried but you might be able to get the rear cover off and free the brushes with the altenator in place. Getting the altenator out is a job on it;s own. Roel 1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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16th Jul 2018 11:01pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5736
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I will try tomorrow holding the revs to see what results i get. I measure at idle before. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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17th Jul 2018 6:58am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5736
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After unplugging the relay switch feed for the split charge relay and then doing a 1hr trip all was good, no battery warning lights. 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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17th Jul 2018 9:30pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5736
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Checked voltage and all good. Drive home of 300 miles produced no battery warning light, volt meter stayed at normal position during the drive. All this with the split charge relay feed unplugged. 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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21st Jul 2018 11:58am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682 
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Dead aux battery?
Voltage in your meter goes up to 14 with engine running after showing 12v with ign on? Likewise I don't believe the car is the problem. Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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21st Jul 2018 1:32pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5736
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14v or thereabouts. 12v and bit with ignition on, but engine not running
Suspecting either a dying battery or knackered relay. The main thing I was running off the aux batteries was a Engel fridge, but the car engine was running at the time. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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21st Jul 2018 1:36pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682
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My aux will run my Engel in UK for 4 days no recharge.
IS the aux always fitted? Or left uncharged for prolonged periods? Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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21st Jul 2018 1:51pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682
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Those reading are off main bat only?
Reconnect relay see if fault returns Drop test aux What's aux Voltage a day after being charged? hard wire aux to main see what happens, this could drain main bat! How old is aux. Whose setup is it? Vsr is What brand? Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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21st Jul 2018 1:54pm |
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