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Can I lock all 4 wheels after ending up in a ditch?
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chrisdavin
 


Member Since: 02 Jan 2013
Location: Hertfordshire
Posts: 3

England 2005 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3
Can I lock all 4 wheels after ending up in a ditch?

After going into a ditch and wanting to put the car into rock crawl to lock all 4 wheels I had no luck. All it would do is flash and the best I could do was to lock the front axle and the rear axle but not all together, so annoying!

My o/s/f and n/s/r wheels were firmly on the ground but so too was the chassis just behind the front wheels. The n/s/f and o/s/r wheels were both off the ground. Fortunately in the end my brother turned up with his Defender, we attached a wire and after a small tug I was out.

So the question is how can I get it into rock crawl after I am already in the predicament and the option just flashes?

Is there an override?

Thanks in advance to anybody with a suggestion other than call a defender owner.

Chris
  
Post #187211425th Oct 2017 8:08 am
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Gazellio @ Prestige Cars
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United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Your planning another ditch visit?
 
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Post #187212625th Oct 2017 8:30 am
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
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United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Assuming you haven’t added lockers or have the rear locker, I don’t think there is a mechanical way to lock all 4 wheels to drive. You only have the central diff lock and computers!
 

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Post #187212825th Oct 2017 8:37 am
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DG
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Member Since: 12 Dec 2005
Location: The Gaff
Posts: 43161

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

Theoretically the system should sense which wheels have traction and deliver drive to them no matter what you have selected on special programs...if however you were bellied out and unable to raise the chassis further then you have to arrive at a point where you realise it's not a magic machine.
  
Post #187213225th Oct 2017 8:49 am
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Gareth
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Member Since: 07 Dec 2004
Location: Bramhall
Posts: 22717

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Lux Auto Fuji WhiteDiscovery 4

Your car should have sensed it was grounded and automatically gone into Extended Mode ride height. Once in extended mode, you can invoke an emergency Super extended mode by pressing the brake pedal, and holding the suspension height selector into the raise position for 4 seconds.

This will raise the car a few cms over the normal extended height.

With regard to wheels off the ground, the car should apppy the brake to the off ground wheel, therefore sending power to the wheels in contact. You need to give a bit of throttle to make this happen.

You can also switch off the DSC to minimise traction control involvement.

At the end of the day, the laws of physics determine if you are beached hard enough to stop progress. A Disco is heavy and once beached is a dead weight.

In a cross axle situation, the D3/4/5 will always be better than a Defender without traction control, or diff lockers.
  
Post #187214325th Oct 2017 9:30 am
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Hardware17
 


Member Since: 28 Jun 2016
Location: Manchester
Posts: 1672

England 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

if you slammed/dropped into a ditch, strongly recommend checking wheels are securely fastened on straight after you get out and again after a few miles. I managed to snap a wheel bolt once, although admittedly not in a Disco.
  
Post #187215125th Oct 2017 9:55 am
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BrettKaz
 


Member Since: 11 Nov 2013
Location: Canberra
Posts: 149

Australia 2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

To engage rock crawler you must engage low range (otherwise just flashes). To engage low range you need to be in neutral not park.
  
Post #187219425th Oct 2017 12:17 pm
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garrycol
 


Member Since: 06 Dec 2010
Location: Canberra
Posts: 559

Australia 

Exactly - you needed to have gone into Low Range to get into Rock Crawl which would have locked the centre diff and opened the cross valves in the suspension.
  
Post #187220125th Oct 2017 12:37 pm
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Mattt
 


Member Since: 19 Jul 2012
Location: Lincolnshire
Posts: 42

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Santorini BlackDiscovery 4

Were you in low range? I can’t remember if it auto switches for you or not.
  
Post #187222125th Oct 2017 1:50 pm
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Mattt
 


Member Since: 19 Jul 2012
Location: Lincolnshire
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England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Santorini BlackDiscovery 4

Should’ve refreshed the page before replying!!!
  
Post #187222225th Oct 2017 1:51 pm
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chrisdavin
 


Member Since: 02 Jan 2013
Location: Hertfordshire
Posts: 3

England 2005 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

Ok thanks to all, its seems it must have been the low range option that caught me out and obviously I was NOT in Neutral, as I do remember keep putting it in park. Perhaps I should have googled it whilst stuck in the ditch waiting for my rescuer. I won't forget that next time and not that I'm in a habit of driving into ditches.

Thanks to Gareth for the advice on the super extended height option too, I'm sure that will save my bacon one day too!
  
Post #187222725th Oct 2017 2:27 pm
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rockcrawler
 


Member Since: 31 Oct 2012
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United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Gazellio @ Prestige Cars wrote:
Your planning another ditch visit?

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Post #187223825th Oct 2017 2:56 pm
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chrisdavin
 


Member Since: 02 Jan 2013
Location: Hertfordshire
Posts: 3

England 2005 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

Not if I can help it but thanks for your concern
  
Post #187229225th Oct 2017 5:31 pm
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JackNorris
 


Member Since: 06 Jul 2012
Location: UK
Posts: 996

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Fuji WhiteDiscovery 4

Gareth wrote:
Your car should have sensed it was grounded and automatically gone into Extended Mode ride height. Once in extended mode, you can invoke an emergency Super extended mode by pressing the brake pedal, and holding the suspension height selector into the raise position for 4 seconds.


So can you engage this in normal use without grounding out?
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Post #187230725th Oct 2017 6:05 pm
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Mattt
 


Member Since: 19 Jul 2012
Location: Lincolnshire
Posts: 42

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Santorini BlackDiscovery 4

I’ve heard of people forcing it with blocks of wood under.

Or use IID...
  
Post #187231125th Oct 2017 6:12 pm
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