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Hellpppp, 65 disco 4 wont start
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Tom2018
 


Member Since: 28 Oct 2020
Location: Worthing
Posts: 23

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4
Hellpppp, 65 disco 4 wont start

Hi all, disco 4, drove for 2 hrs yesterday at night all worked fine, got home parked up and turned engine off. Error came up saying restart car low battery
Tried and wont restart
Dash comes on as normal and lights work etc
Left over night checked battery 11.82 on multi meter put on charge for 6hrs got to 12.5 still nothing so though il buy a new battery. Brought one from
Halfords 12.8v still nothing. Doesnt even try and turn over?

Any ideas?

Thanks
Tom
  
Post #219653427th Dec 2020 2:46 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4577

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Sounds like possibly an earth strap has let go. Get a good jump lead and connect one end to the engine and the other to the battery negative terminal.

Make sure you have strong connections and see if it will turn over.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #219654327th Dec 2020 3:12 pm
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Tom2018
 


Member Since: 28 Oct 2020
Location: Worthing
Posts: 23

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Hello, nope just tried that jumping off a 3lutre pickup no joy, press the button it clicks and the aircom goes off then comes back on 5 seconds later?
  
Post #219654427th Dec 2020 3:14 pm
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Tom2018
 


Member Since: 28 Oct 2020
Location: Worthing
Posts: 23

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Any easy ways to check or find broken earth?
  
Post #219654527th Dec 2020 3:15 pm
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Kviasen
 


Member Since: 24 Dec 2020
Location: Norway
Posts: 107

Norway 

Check fuse to starter motor, check for correct battery should be silver calcium and check battery negative.
Sometimes the new batteryes must be charged but you say nothing witch leads to thinking of poorly connected ground cable or possible short in starter motor but that is unlikely.
  
Post #219654727th Dec 2020 3:20 pm
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Tom2018
 


Member Since: 28 Oct 2020
Location: Worthing
Posts: 23

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

PROFSR G wrote:
Sounds like possibly an earth strap has let go. Get a good jump lead and connect one end to the engine and the other to the battery negative terminal.

Make sure you have strong connections and see if it will turn over.


Sorry just re read your post iv tried that and it will turn over but very weekly.

How doni fix it please?
  
Post #219654827th Dec 2020 3:25 pm
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philm
 


Member Since: 02 Oct 2016
Location: Manchester
Posts: 732

England 

Tom2018 wrote:
Any easy ways to check or find broken earth?


PROFSR G test method.
Jumping from another vehicle doesn't show an earth fault.
 L633 Defender
Range Rover Velar-gone
Discovery 4 Landmark-gone
Gap IID Tool 
 
Post #219654927th Dec 2020 3:26 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

Beat me to it Phil.

If you don't connect engine and battery negative, car electrics won't necessarily work even jumping from another vehicle.
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #219655227th Dec 2020 3:28 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4577

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

philm wrote:
Tom2018 wrote:
Any easy ways to check or find broken earth?


PROFSR G test method.
Jumping from another vehicle doesn't show an earth fault.


I didn't suggest jumping from another vehicle, if there is a broken earth strap he can just bridge it with a single jump lead to confirm.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #219655427th Dec 2020 3:32 pm
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Tom2018
 


Member Since: 28 Oct 2020
Location: Worthing
Posts: 23

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Ok thanks, so it seems that its a bad earth somewhere as wiring engine to battery negative means it will turn over very weekly by itself.

Any ways to find a bad earth? Theres the obvious wire from the battery to the passenger wing?
  
Post #219655527th Dec 2020 3:34 pm
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philm
 


Member Since: 02 Oct 2016
Location: Manchester
Posts: 732

England 

PROFSR G wrote:
philm wrote:
Tom2018 wrote:
Any easy ways to check or find broken earth?


PROFSR G test method.
Jumping from another vehicle doesn't show an earth fault.


I didn't suggest jumping from another vehicle, if there is a broken earth strap he can just bridge it with a single jump lead to confirm.


It meant using your method!
 L633 Defender
Range Rover Velar-gone
Discovery 4 Landmark-gone
Gap IID Tool 
 
Post #219655727th Dec 2020 3:38 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4577

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

It's likely the strap on the driver side which bolts to the engine, then chassis, then body. If you get a strong earth as I suggested above it will confirm the earth strap failure, but it must be STRONG!
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #219655927th Dec 2020 3:42 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4577

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

philm wrote:


It meant using your method!


Thumbs Up
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #219656327th Dec 2020 3:44 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

If the earth strap( s ) are naff, battery won't be in a good state of charge ... giving you the slow turning over.
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #219658927th Dec 2020 5:02 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4577

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Yeah it's a new fully charged battery I believe.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #219659527th Dec 2020 5:13 pm
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