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Ongoing electical gremlins
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Neil McP
 


Member Since: 30 Oct 2024
Location: Gold Coast
Posts: 11

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Alaska WhiteDiscovery 4

Thank you for your suggetions. I will pass tem on and, hopefully, some progess will be made.

NeilMcP
  
Post #23813389th Nov 2024 3:35 am
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Worms
 


Member Since: 24 Sep 2023
Location: Highlands
Posts: 415

Scotland 2005 Discovery 3 TDV6 Base 7 Seat Auto Zambezi SilverDiscovery 3

Just one added thought... When I've had this type of fault where it is hit and miss whether the fault develops, it has sometimes been a relay that is on its way out. It is hard to imagine any single relay causing your range of issues, but the interconnected nature of the electronics on modern(ish!) cars mean that almost anything is possible.

As ever, there is always the balance between "Occam's Razor" and "Hickams dictum" - while a single fault might be the most logical scenario, two separate, coincidental faults are possible. I'm not sure if I am completely clear whether your not-starting issue is different from the central console/indicators/door-locking issue - when the latter occurs does the car still start?
 Previously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel 
 
Post #23813409th Nov 2024 8:55 am
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jackvoyager
 


Member Since: 02 Oct 2020
Location: UK
Posts: 35

United Kingdom 2012 Discovery 4 3.0 TDV6 HSE Auto Bonatti GreyDiscovery 4

I have a car from the same year and month as you, I had similar strange electrical events with the car ...
There were no errors or anything else and the car suddenly died and was impossible to start .... suddenly it would come to life when it wanted to ...
I bought a second used BCM, cloned the data from mine and the car has been driving like this for two years.
Read here I described my problems with the car there .. maybe you have something similar ...

https://www.disco3.co.uk/forum/bcm-failure...00894.html
  
Post #238137810th Nov 2024 12:14 pm
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Neil McP
 


Member Since: 30 Oct 2024
Location: Gold Coast
Posts: 11

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Alaska WhiteDiscovery 4

In reply to JackVoyager - I will certainly pursue the idea of replacing the BCM.

In reply to Worms: I do not think that the starting problem and the console problem are related (unless it is at some deep level).
The starting problem does not occur at the same time as the console problem and vice versa.

I will discuss all of the suggestions made with my mechanic and we will see how we go.

NeilMcP
  
Post #238141310th Nov 2024 10:41 pm
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Neil McP
 


Member Since: 30 Oct 2024
Location: Gold Coast
Posts: 11

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Alaska WhiteDiscovery 4

I have decided to replace the BCM.

When this has been done and tested, I will report further.

NeilMcP
  
Post #238152112th Nov 2024 9:40 pm
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10844

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

Fingers crossed Thumbs Up

Please keep us informed Neil.

Regards

Nigel
  
Post #238153213th Nov 2024 8:44 am
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