Johnny247
Member Since: 07 Jun 2017
Location: Oxfordshire
Posts: 5
  
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| Discovery 3 Wont Start (fitted a new battery) |
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Hi,
I was driving my d3 the other day and all of a sudden all the warning lights came on the dash, so i pulled over to the hard shoulder and switched the d3 off. I then was unable to start the d3. I managed to get hold of a new battery and installed it on the hard shoulder. The d3 started up fine! I then drove the vehicle about 20mins stopped at the destination then about 20min later tried to start again and no luck. The battery was flat! tried to jump start the d3 with a landrover defender and was unable to do so, ignition would come on and then just a click and week starting sound, the jump leads got too hot to continue so was towed back to my address.
Does anyone have any ideas as to what is causing this issue? or should i get a can of petrol and end it now!hehe
Thanks
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 7th Jun 2017 5:04 pm |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
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Possibly the Alternator is shot , there are many posts on the subject if you search flat battery.
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| 7th Jun 2017 5:15 pm |
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Johnny247
Member Since: 07 Jun 2017
Location: Oxfordshire
Posts: 5
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Hi,
Thanks for your reply, why would a new fully charged battery got flat within about 30 minutes though?
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| 7th Jun 2017 5:29 pm |
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Johnny247
Member Since: 07 Jun 2017
Location: Oxfordshire
Posts: 5
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I forgot to mention i have also just tried to jump start the d3 with a van and the d3 will click and labour click and labour but no luck in starting?
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| 7th Jun 2017 5:45 pm |
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Ja92mie
Member Since: 16 Sep 2014
Location: Newquay
Posts: 1259
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Was the new battery actually brand new?
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| 7th Jun 2017 5:46 pm |
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Johnny247
Member Since: 07 Jun 2017
Location: Oxfordshire
Posts: 5
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Hi Yes brand new from the shop
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| 7th Jun 2017 5:47 pm |
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Ja92mie
Member Since: 16 Sep 2014
Location: Newquay
Posts: 1259
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I would point towards alternator too but I'm no expert! Have you tried searching the forum for anything similar?
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| 7th Jun 2017 5:49 pm |
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jc_uk
Member Since: 19 Apr 2007
Location: Cumbria
Posts: 314
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Hi,
Have you checked your fuses and also the condenser on the gearbox.......?
Cheers
JC
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| 7th Jun 2017 6:56 pm |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
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Johnny247 wrote:Hi,
Thanks for your reply, why would a new fully charged battery got flat within about 30 minutes though?
Very power hungry vehicles, with no charge it would drain very quickly especially if the alternator has a short as well
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| 7th Jun 2017 7:25 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
 
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disconnect the battery before it's knackered too or the car catches fire!
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| 7th Jun 2017 7:46 pm |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701
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One problem with the alternators on Discoveries is that they can short out, and drain a new battery in minutes. I would disconnect your new battery, fully recharge it. Then swap the alternator before trying again.
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| 7th Jun 2017 7:55 pm |
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Narpy
Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830
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The advice here is sound but because you've failed to fill in your profile, it's hard to know which Discovery you have as there are many variants, therefore impossible to help directly.
Presuming you have a diesel V6, you will no doubt find this thread of interest: http://www.disco3.co.uk/forum/topic158391.html but be warned, failure to fit a Denso and you'll be right back where you started.  Mods:
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| 7th Jun 2017 8:11 pm |
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Johnny247
Member Since: 07 Jun 2017
Location: Oxfordshire
Posts: 5
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Hi,
Thanks for all the replys, i bypassed the alternator today and the vehicle started with no warning lights, so have ordered a new alternator.
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| 9th Jun 2017 5:50 pm |
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Ja92mie
Member Since: 16 Sep 2014
Location: Newquay
Posts: 1259
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I thought it would be the alternator.
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| 9th Jun 2017 9:25 pm |
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fakesnake
Member Since: 30 Mar 2006
Location: Leicestershire
Posts: 281
 
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Hi guys.
Just found myself in the same spot. Flat battery (which was 7 yrs old) but could be jump started & the voltmeter showed the alternator was charging (14.4v).
However, a new replacement battery wouldn't start the vehicle.
So, if it is the alternator, how do I bypass it to get the vehicle started & prove the diagnosis/get to the garage?
Thanks!! Richard
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| 13th Sep 2017 7:50 pm |
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