Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
hill desent runaway.
on a steep slippy track today with hill desent on and feet off...after 200 metres of desent car appeared to lose control and start to run away...scary..managed to carry on steering and was glad to get to the bottom...did I do something wrong.????????....low range mud ruts,,car done 5000 only
2nd Apr 2017 9:05 pm
Luapno
Member Since: 27 Sep 2013
Location: Birmingham
Posts: 871
were the wheels sliding / losing traction ?
for hill descent to work the wheels need gripWhen you are dead, you do not know you are dead. All of the pain is felt by others. The same thing happens when you are stupid.
2nd Apr 2017 9:22 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Feet off may work in a Deafner but it deffo doesn't in a D3. Never tried a D4. It will run away. You need to moderate the braking with the pedal. These machines play by different rules.
2nd Apr 2017 9:38 pm
DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 924
Pressing the brake will cancel HDC won't it?Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
2nd Apr 2017 9:51 pm
Tanglewood
Member Since: 27 Feb 2011
Location: Wilts
Posts: 1376
If there is traction, HDC will control the descent. If its wet grass, sloppy mud or ice forget it. No gadgetry can overcome the laws of physics!
2nd Apr 2017 9:53 pm
JPW
Member Since: 19 Mar 2007
Location: Essex
Posts: 217
I thought the speed of HDC was controlled by the gear you are in.
In low range HDC will be much slower than in high - in high range HDC can be quite fast.
Paul
2nd Apr 2017 9:54 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
DrRobH wrote:
Pressing the brake will cancel HDC won't it?
No, it doesn't. But it keeps the speed under control before you have a 3 tonne sledge. The trick is to keep things slow with you in control, not just hand over control to the tech. Seen a few peeps have a white knuckle ride with the feet off the pedal approach, once I pointed out the better way they had no more issues.
Last edited by DSL on 2nd Apr 2017 9:58 pm. Edited 1 time in total
2nd Apr 2017 9:55 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
JPW wrote:
I thought the speed of HDC was controlled by the gear you are in.
In low range HDC will be much slower than in high - in high range HDC can be quite fast.
Paul
Even in 1st low it will run away if the slope is steep enough. And it doesn't have to be super scary steep for that to happen.
2nd Apr 2017 9:57 pm
IOM man
Member Since: 03 Nov 2013
Location: Peel
Posts: 303
You can alter your travel speed when using HDC by using the + & - on the cruise controls.., but HDC won't stop you if you start slidingCurrent:
2010 Discovery 4 HSE TDV6
2020 Audi Q2 TSFI 40 Aline Quattro Black Edition
2006 Audi RS4 4.2 V8 - Toy in the garage
Gone but not forgotten:
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2nd Apr 2017 10:02 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13906
Well after 12 years I never knew about the + % - buttons. Thanks for the heads up. New Defender L663 110 SE (known as Noddy!)
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2nd Apr 2017 10:19 pm
IOM man
Member Since: 03 Nov 2013
Location: Peel
Posts: 303
I didn't know about it until I did a trip to Solihull and did the LRE and the instructor explained how it worked - since then I have used it quite a number of times in slippery fields 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
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
300 Discovery TDI
Land Rover 90 2.5 Diesel
Series III SWB Land Rover 2.25 diesel
TD4 Freelander Kalahari
1.8 petrol Freelander
2nd Apr 2017 10:29 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
DrRobH wrote:
Pressing the brake will cancel HDC won't it?
No
11 years ago I hurtled out of control down a steep wet slope and ended up sideways after hitting a tree. Lesson ...gravity wins over HDC if the conditions permit. It's not infallible 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
2nd Apr 2017 10:49 pm
Mogwyth
Member Since: 03 Oct 2014
Location: Pwllheli
Posts: 3976
Using HDC from the manual:
Bring the vehicle to a stop at least one vehicle’s length before the start of the
slope.
On vehicles fitted with Terrain Response, use an appropriate special program depending upon the type of surface.
Select either ’1’ or ’2’ (CommandShift), depending on the severity of the slope. If a Terrain Response special program has been selected, then the transmission can be left in ’D’. If the slope is slippery, CommandShift ’1’ or ’2’ should be considered.
Ensure that HDC is selected and drive forward as slowly as possible.
Unless it is necessary to stop the vehicle in order to negotiate obstructions, DO NOT touch the brake pedal during the descent - the engine braking and HDC will limit the speed
If the vehicle begins to slide, the limits of adhesion have been reached, and it may be impossible to maintain the minimum speed. Gently press the accelerator pedal to allow the tires to regain grip, then gently release the accelerator pedal
Once level ground is reached, higher gears or ’D’ can be selected as required.==================================
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3rd Apr 2017 12:19 am
garrycol
Member Since: 06 Dec 2010
Location: Canberra
Posts: 1115
Yes - I think some people need to read their manual before operating their vehicles.
The car will not run away with HDC selected and slow speed selected via the steering wheel controls, low range and command 1 selected - actually command 1 low range works better than HDC.
The car might slide a bit but will not run away - the systems will not let the wheels turn quick enough.
3rd Apr 2017 2:10 am
Mr.Tom
Member Since: 01 Jun 2014
Location: St Neots
Posts: 1641
No but you might find it's lost traction and therefore sliding. Low range and HDC won't help in this scenario, nor will breaking. Applying some power or changing up a gear can help.Sill protection - LED internal lights - LED reverse lights - boot liner - Dog Guard - Rock sliders
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