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Discovery 4 wont start?
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Speculum
 


Member Since: 06 Apr 2025
Location: London
Posts: 1

United Kingdom 
Discovery 4 wont start?

I have a 64 plate discovery 4, recently decide that the stop start button wouldn't do anything. Dash only comes on when locking and unlocking the car. Over a few days it has randomly started and drives fine but when left for a few hours I have the same issue and now doesn't start at all. Battery is fine and charging fine key works to lock and unlock the car it's like it immobilised some how anyone have any idea what the issue could be many thanks in advance.
  
Post #23922617th May 2025 8:55 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2946

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Do a search on here for Earth strap, it's one possibility.

eg - https://www.disco3.co.uk/forum/earth-strap...ight=Earth

It can be tested really easily by temporarily fitting a jump lead between the Battery Earth post and the Engine.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #23922667th May 2025 9:20 am
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itsaguything
 


Member Since: 20 Dec 2023
Location: Manotick, On
Posts: 313

Canada 2015 LR4 3.0 SCV6 HSE Lux Auto Aintree GreenLR4

As is a defective start button.
Of course, once you get the vehicle in"accessory" mode, we would do much better with codes.

Cheers.
 2015 LR4 HSE Lux Aintree Green
2013 LR2 HSE Radiance Red
2007 XKR Jaguar Racing Green
2005 XJR Jaguar Racing Green
2002 S-Type R British Racing Green 
 
Post #239248312th May 2025 1:57 am
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 11057

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

Speculum

Update please.

NJSS
 Am I Gammon or Woke ? - I neither know nor care.

2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t. 
 
Post #239248712th May 2025 9:16 am
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