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Extended height mode warning when going to access
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tgreer
 


Member Since: 12 Aug 2020
Location: Henley-on-Thames
Posts: 111

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Java BlackDiscovery 3
Extended height mode warning when going to access

Hi Folks

Every time I go to access height as we're getting there I get a 'Extended Mode' flash up briefly. We do stay in access mode and stay down, so I'm wondering if I've got a small issue somewhere?

Can anyone tell me how it detects it needs to go to extended mode?  
Post #219290110th Dec 2020 1:25 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1807

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

Possible faulty height sensors, see if any codes are available. Going to extended mode, the system thinks you are stuck on something and wants to raise the vehicle to clear the obstacle.  
Post #219397215th Dec 2020 9:31 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10637

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

the exhaust valve could be starting to get blocked  
Post #219401615th Dec 2020 1:00 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8194

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Which is the most likely cause. Thumbs Up
Is your "normal" height normal or has it been lowered?- all height modes are taken from normal, if normal tide height has been lowered more than 20mm(Which is easy to do with the Iid tool) when you choose access mode the body reaches the bump stops before reaching access mode height thinks it's grounded and reverts back to normal height. It can when others can't,
It will when others won't,
It goes where others don't.  
Post #219402415th Dec 2020 1:21 pm
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tgreer
 


Member Since: 12 Aug 2020
Location: Henley-on-Thames
Posts: 111

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Java BlackDiscovery 3

As far as I'm aware it's standard height.

I'll have another look when it's on the ramp in January for MOT and bits.

It's the fact it goes down, briefly blinks that and then stays in access height that confuses me most!  
Post #219403315th Dec 2020 2:11 pm
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Kenny57
 


Member Since: 12 Apr 2020
Location: Essex
Posts: 173

United Kingdom 2007 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Is it possible one corner is lowering more slowly that the others, so the system briefly thinks its stuck on something but changes its mind when the corner carries on to the correct height?  
Post #219403515th Dec 2020 2:21 pm
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