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Electrical problem disabled the car
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3
Electrical problem disabled the car

I have a land rover 2.7 disco 3 55 plate
I parked outside a shop everything was fine
Then as as came back to the car a faint siren was going off
My remote key would not open any doors
I tried my spare key it was he same
I manually used the key in the passenger door to get in
The car would not start
The headlights worked the dashboard came on
Called the AA they sent a land rover guy to look at it
He said there is power to the fuse box under the bonnet and power to the fuse box in the car
He said that's all he can do and it was towed home where it remains now
When I put the ignition on the windscreen wipers come on
It locks my key in the ignition and they won't stop until I remove the battery
Any ideas ?
I have read lots of different things about Ecu and bcu etc
Thanks
  
Post #18533982nd Sep 2017 12:28 pm
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Down&Dirty
 


Member Since: 17 Aug 2012
Location: Somewhere out back
Posts: 1287

England 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Corris GreyDiscovery 4

Have you checked your battery voltage?
 MY24 Defender 90 X-Dynamic HSE
MY18 Disco 5 HSE Santorini Black Now Gone. 
 
Post #18533992nd Sep 2017 12:45 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

Charge battery overnight, see if it's the same once fully charged.
If it runs in the morning and everything seems normal again, check the alternator output. Wink
 Mods:
Front Fogs + Halos
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Garmin Nuvi + D4 Surround + Reversing Camera.
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Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
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I'm not scared, I'm outta here. 
 
Post #18534012nd Sep 2017 12:46 pm
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3

Yes I have checked the battery and also charged over night but still the same
Thanks
  
Post #18534062nd Sep 2017 1:14 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

Did it rain heavily before the problem started?
If you charged the battery on the car, charge it whilst off the car, if not possible, replace it for a known good battery and see if problem persists.
 Mods:
Front Fogs + Halos
FBH Remote Control
The 1st Ever RRS Modded Grill
Garmin Nuvi + D4 Surround + Reversing Camera.
D4 Steering Wheel.
Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
Make your own Narpy grill thread
I'm not scared, I'm outta here. 
 
Post #18534222nd Sep 2017 2:29 pm
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3

It was one of the worst down pours in years
I have tried a different battery a spare one I had but not a new one
I went to landrover to retrieve a code for the immoboliser but they said there isn't one on their records
  
Post #18535212nd Sep 2017 11:17 pm
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L319
 


Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2079

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

I don't think the immobiliser has a code. It sound very much like mine when I had very low battery voltage (Circa 7 volts) , in my case a recharge cured it. I wonder if the alternator has gone down with a dead short.
  
Post #18535423rd Sep 2017 7:28 am
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IOM man
 


Member Since: 03 Nov 2013
Location: Peel
Posts: 303

Isle Of Man 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

My D3 was fine one day and then the battery was completely flat the next - fully charged the battery over night fitted it and it was flat again within an hour

My multimeter showed poor charging from the alternator and a discharge test showed that the battery was shot, so a new alternator and battery cured the problem for me, I luckily enough got the new battery under the Lucas warranty Thumbs Up
 Current:
2010 Discovery 4 HSE TDV6
2020 Audi Q2 TSFI 40 Aline Quattro Black Edition
2006 Audi RS4 4.2 V8 - Toy in the garage Smile

Gone but not forgotten:

2006 Range Rover Sport HSE TDV6
2018 Lexus NX 300 F Sport Hybrid
2005 Discovery 3 HSE TDV6
2015 Discovery HSE Lux
200 Discovery TDI
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Post #18535453rd Sep 2017 8:16 am
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3

I will have to get a new battery and try it
I went to see an auto electrician he said I need new fuse box ,clocks ,ecu and bcu ?
He said it will cost about £2000
I'm not sure he knew what he was doing
  
Post #18536513rd Sep 2017 1:42 pm
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3

I am thinking there might be a problem with the internal fuse so I want to take it out to look at the connection behind for rain damage

Is it possible to take it out and repair or replace ?
Is there an easy way to remove?
Thanks
  
Post #18550807th Sep 2017 11:51 am
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3

I have fitted a new battery to the car but no difference
The pic is what is shown on the dash it says EXT.....C

I can get the radio on
The wipers come on and stay on until the battery is removed
Also the key locks in the ignition until the battery is removed

???? Any ideas
  
Post #18554568th Sep 2017 5:12 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

Does your car have a sunroof?
 Mods:
Front Fogs + Halos
FBH Remote Control
The 1st Ever RRS Modded Grill
Garmin Nuvi + D4 Surround + Reversing Camera.
D4 Steering Wheel.
Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
Make your own Narpy grill thread
I'm not scared, I'm outta here. 
 
Post #18555488th Sep 2017 8:46 pm
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MorganD379
 


Member Since: 29 Sep 2016
Location: SA62 3PP
Posts: 425

Wales 

Sounds as if you may have a problem like we just had on the wife's Toyota... Stealers said needed to strip ECU/dash/harness to find the problem, bought a new battery as it only shows eight volts... Turned out to be an earth fault between the battery and the bodywork, one new bolts and two new leads and back on the road. Maybe worth a look?
  
Post #18555548th Sep 2017 9:00 pm
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Fishtankjohn
 


Member Since: 31 Aug 2017
Location: Nottinghamshire
Posts: 14

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Adriatic BlueDiscovery 3

I will look at the earthing problem

And yes it has a sunroof
  
Post #18556099th Sep 2017 8:10 am
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1771

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

Maybe the battery fails under load but I would be looking at the internal Fuse box (behind glove box) for water ingress around connectors etc. if you have a OBD tool, can you read any codes.
  
Post #18556619th Sep 2017 10:10 am
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