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Scott #55
Member Since: 15 Apr 2015
Location: Glasgow
Posts: 1664
  
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I don't know if I'm fooling myself, but whenever the temperature indicator shows the snowflake, I switch the TR to Grass, Gravel and Snow.
I typically drive pretty carefully anyway - but does changing the TR make much difference on an icy road? 2014 - D4 2010 HSE Nara Bronze
2012 - FL2 2009 GS Stornoway Grey
2001 - VW Passat Estate Inky Blue
1999 - Ford Mondeo Light Blue
1998 - Rover 25 Red
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 29th Nov 2018 5:47 pm |
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RRSTDV8
Member Since: 07 Apr 2014
Location: Here
Posts: 13078
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Grass/Snow on TR will give you a slower initial throttle response, the traction control is more sensitive to wheel spin, the centre diff lock becomes active and it engages HDC.
I've played with HDC on an icy hill and it crawled down very calmly. I got out to have a walk about and could barely stand up on the slope! Visiting from rrsport.co.uk
2012 RRS SDV6
2008 RRS TDV8
"When you fire that first shot, no matter how right you feel, you have no idea who's going to die! You don't know who's children are going to scream and burn. How many hearts will be broken. How many lives shattered. How much blood will spill, until everybody does what they were always going to have to do from the very beginning: SIT DOWN AND TALK!"
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| 29th Nov 2018 5:54 pm |
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Brian_DL13
Member Since: 25 Aug 2013
Location: Teesdale
Posts: 1418
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Scott #55 wrote:I don't know if I'm fooling myself, but whenever the temperature indicator shows the snowflake, I switch the TR to Grass, Gravel and Snow.
I typically drive pretty carefully anyway - but does changing the TR make much difference on an icy road?
If the road is dry tarmac it won't help. But if it's wet or icy or snow or anything else slippery it will help a lot.
I leave it as normal even at low temperatures if it's dry.
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| 29th Nov 2018 6:09 pm |
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Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
 
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To me the system proved itself in the snow we had at the beginning of the year.
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| 29th Nov 2018 7:23 pm |
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RRSTDV8
Member Since: 07 Apr 2014
Location: Here
Posts: 13078
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Terrain Response can be thought of as a tyre change/upgrade on the fly - at least for going forward. On summer tyres, snow mode will give you traction (not braking!) more akin to an all season or winter tyre. In mud, mud mode will give you traction on road tyres that an all terrain would give on an "ordinary" 4x4.
Obviously this is somewhat simplistic but gives an idea. Stick a better tyre on the vehicle and TR will help that too. Visiting from rrsport.co.uk
2012 RRS SDV6
2008 RRS TDV8
"When you fire that first shot, no matter how right you feel, you have no idea who's going to die! You don't know who's children are going to scream and burn. How many hearts will be broken. How many lives shattered. How much blood will spill, until everybody does what they were always going to have to do from the very beginning: SIT DOWN AND TALK!"
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| 29th Nov 2018 8:31 pm |
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charlietortoise
Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 502
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I cannot wait for the snow and ice. It will be the first time I turn the knob for real. I test drove a D4 at Gaydon when they launched it and they had a skid ring set up. It was incredible what snow mode did for the car. Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂
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| 29th Nov 2018 9:17 pm |
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sasdiscos
Member Since: 22 Feb 2013
Location: Northants
Posts: 886
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I used to do off road challenges in my defender. The one thing I will say about the tr system is don’t try to drive the car as you would without aids. You or at least I found my self fighting with the tr system and making things worse.
Steve You remind me of a younger me, not much younger mind...perhaps even a little older!
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| 29th Nov 2018 9:24 pm |
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Lee Trinder
Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515
 
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If I switch mine to grass gravel and snow it doesn’t show the diff lock. Could I have a problem?
Or can someone explain to me when center and rear diffs should show locked on the 4x4 info screen.
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| 29th Nov 2018 9:24 pm |
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TigerRecovery
Member Since: 31 May 2017
Location: Long Stratton, Norwich, Norfolk
Posts: 901
 
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Grass/Gravel/Snow Terrain mode modifies the throttle progression to make it less aggressive and reduces the risk of wheel spin. I believe it also pulls away in 2nd gear.
Not only that, the traction control, DSC, transmission gear shifts, suspension settings and transfer box calibration is all changed to make for a safer driving experience.
It's the only terrain mode that is used long term and also allows cruise control to work. The reason is that you could need it for 3 or 4 months of the year in certain markets.
It has been said that using GGS reduces fuel consumption by making the throttle less sensitive.
If you want a lot of fun in the snow select Sand Mode, go in to manual mode (auto) and turn DSC off, you'll be able to drift then. 1972 Range Rover Classic 2 door V8
2013 Land Rover Discovery 4 HSE - SCRAPPED
2016 Land Rover Discovery 4 Landmark
2022 Volvo XC40 T5 PHEV 282HP FWD 3 cylinder!
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| 29th Nov 2018 10:01 pm |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10296
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^^ - is that be ABLE to drift or be IN a drift 
Al Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
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| 30th Nov 2018 12:08 pm |
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TigerRecovery
Member Since: 31 May 2017
Location: Long Stratton, Norwich, Norfolk
Posts: 901
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It depends on the level of talent the driver possesses. I've done both! 1972 Range Rover Classic 2 door V8
2013 Land Rover Discovery 4 HSE - SCRAPPED
2016 Land Rover Discovery 4 Landmark
2022 Volvo XC40 T5 PHEV 282HP FWD 3 cylinder!
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| 30th Nov 2018 1:51 pm |
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