Disco 4 Terrain Response OCD

[nat_89]

I know this isn't a fault just an OCD thing i noticed the other day while i was passengering and looking around the cabin, it must of been a simple over sight or there could be a reason behind it. Has anyone else noticed the terrain symbols are not centred they are over to the right instead of all being centred in the box, and no its not my car just a pic i got off the net because i couldn't be bothered to go out and get a pic, but mine is the same minus the eco button.


https://www.aulro.com/afvb/images/imported/2014/06/574.jpg (http://s236.photobucket.com/user/nattherat89/media/2014LandRoverDiscovery-MediaPreview2.jpg.html)

[lpj]

Great! Now I'm going to be looking at that all the time!

[nat_89]

Great! Now I'm going to be looking at that all the time!

Hahahaha yeah that's what my partner said now I've noticed it, it will annoy me haha something simple but yeah.

[First LR]

On a side note, does anyone else have that "Eco" button ??

And what exactly does it do ??

I have never heard of it :eek:

[ytt105]

My guess is, it's so the yanks don't have to worry about parallex error!

[LeighW]

Hi nat_89 - I share your concern. There are two things that came to mind...

1. The designers were having a late night and topped up with an otherwise illegal substance <g>

2. The designers were informed by the TR engineering team to allow for another mode that was coming soon. But it didn't happen soon and so the path between the design and production of the diagram was cut short. Hence its appearance so far.

3. Maybe they were thinking like you where OCD = Off Centre Diagram.

HTH, Leigh

[nat_89]

On a side note, does anyone else have that "Eco" button ??

And what exactly does it do ??

I have never heard of it :eek:

I think thats for the models that have the stop start system, but i don't believe the D4s in Aus are getting the stop start system.

[Epic pooh]

They should have just kept the dial haha ... I want that eco button, that's hillarious ... anyone know what it does ?!?

[Mungus]

Room there for one more function light. (Llams status of some sort would be good there)
One graphic in the manual has them centred and yet another has them offset just like that.

[nat_89]

Hi nat_89 - I share your concern. There are two things that came to mind...

1. The designers were having a late night and topped up with an otherwise illegal substance <g>

2. The designers were informed by the TR engineering team to allow for another mode that was coming soon. But it didn't happen soon and so the path between the design and production of the diagram was cut short. Hence its appearance so far.

3. Maybe they were thinking like you where OCD = Off Centre Diagram.

HTH, Leigh

Haha you could be right on all 3 there!! When i was searching for a pic, someone had it circled there and i thought maybe it came from the Range Rover Sports in the UK that had the rotary gear dial and some had the Dynamic setting and maybe they allowed for that but didn't centre it up when they took that setting away??

[rufusking]

Mine look fine!

[nat_89]

Mine look fine!

Hahaha crack up

[JamesH]

It just goes to show how it would be awesome if you could get some after market custom transfers, such as a shopping trolley, a handbag, a man on a polo pony, a bunch of grapes, a kangaroo etc

[zilch]

Room there for one more function light. (Llams status of some sort would be good there)
One graphic in the manual has them centred and yet another has them offset just like that.

Interestingly enough when i wanted my driving lights switch put in the centre console (with a proper RRS switch where there was a blanking plate), thought
hey just buy a switch from LR.. not that simple, you have to buy the whole control unit :mad: so put it under the fog light switches and out of sight. assume the same
problem on the D4 as they are fundamentally the same switch gear. Everything is unit based rather than individually switched, so assume the same for the terrain
response.. but would be good to have some graphics of outrageous modes..

[sniegy]

Eco Stop Start will probably be an update for 15MY i would guess ;-)

[zilch]

how about auto terrain, the new Sport has the function where you can set it to work it out for itself and you just point it in the direction you want, no more straining for the terrain control button :D

[Greatsouthernland]

Eco Stop Start will probably be an update for 15MY i would guess ;-)

So glad the MY14 doesn't have it.

Wife's car has it and I'm always turning it off, there should be a permanent override for that function.

About the off centre, used it on the weekend and didn't pick it up :( well done Nat. I did get quickly annoyed with reaching forward many times to play with modes, I much preferred the dial on the rangie.

I wonder if there's a voice command for it to avoid the stretch? Must check that when I get time...

[wombathole]

Haha you could be right on all 3 there!! When i was searching for a pic, someone had it circled there and i thought maybe it came from the Range Rover Sports in the UK that had the rotary gear dial and some had the Dynamic setting and maybe they allowed for that but didn't centre it up when they took that setting away??

I second this theory, that the far left position could have been for a "sports" setting.

[nat_89]

So glad the MY14 doesn't have it.

Wife's car has it and I'm always turning it off, there should be a permanent override for that function.

About the off centre, used it on the weekend and didn't pick it up :( well done Nat. I did get quickly annoyed with reaching forward many times to play with modes, I much preferred the dial on the rangie.

I wonder if there's a voice command for it to avoid the stretch? Must check that when I get time...

Yeah it kinda does get annoying when i was test driving a golf for my partner it had it and yeah your trying to test drive and its shutting down and i did something and it wouldn't start at the lights, had to put it in park and turn on and off probably my fault messing around but turned it off after that haha.


Surely they could have something in the voice command but i don't think there is anything there, i never used the voice command a bit of a pain. Hopefully next model will have an auto setting as someone said that will stop your stretch!! haha

[Graeme]

how about auto terrain, the new Sport has the function where you can set it to work it out for itself and you just point it in the direction you want, no more straining for the terrain control button :DI haven't caught-up with the latest models but my old MY10 D4 has that very same setting and it gets used all the time!

[Basil135]

So glad the MY14 doesn't have it.

Wife's car has it and I'm always turning it off, there should be a permanent override for that function.

About the off centre, used it on the weekend and didn't pick it up :( well done Nat. I did get quickly annoyed with reaching forward many times to play with modes, I much preferred the dial on the rangie.

I wonder if there's a voice command for it to avoid the stretch? Must check that when I get time...

Had an Audi Q3 as a loaner for a couple of weeks with this function.

It drove me mad, so I dug deep into the menus & found it... :D

So somewhere, buried in sub-menu 87, it should be there. Best of British luck finding it thou...

[Greatsouthernland]

Had an Audi Q3 as a loaner for a couple of weeks with this function.

It drove me mad, so I dug deep into the menus & found it... :D

So somewhere, buried in sub-menu 87, it should be there. Best of British luck finding it thou...

Cheers Basil, hers is a Merc C200, couldn't find it in car menus so one day will have a look in the manual, or maybe the Merc forum?

[zilch]

I haven't caught-up with the latest models but my old MY10 D4 has that very same setting and it gets used all the time!

auto-terrain, i have been robbed as i thought it was a new feature for the 2014 models .. not got it on my ancient MY10.5 Sport

[Graeme]

Special programs off...

[nat_89]

Special programs off...

Special programs off is just the General driving logo.

[sniegy]

I know this isn't a fault just an OCD thing i noticed the other day while i was passengering and looking around the cabin, it must of been a simple over sight or there could be a reason behind it. Has anyone else noticed the terrain symbols are not centred they are over to the right instead of all being centred in the box, and no its not my car just a pic i got off the net because i couldn't be bothered to go out and get a pic, but mine is the same minus the eco button.


https://www.aulro.com/afvb/images/imported/2014/06/574.jpg (http://s236.photobucket.com/user/nattherat89/media/2014LandRoverDiscovery-MediaPreview2.jpg.html)

Its to Allow for Parallax Error. :p:o:D;):angel::)
Sit in the drivers seat & it is PERFECT!

[nat_89]

Its to Allow for Parallax Error. :p:o:D;):angel::)
Sit in the drivers seat & it is PERFECT!

hahahah i should have known i was looking from the passenger seat so thats why i noticed it hahaha you could be onto something!!

[Greatsouthernland]

On the weekend I was doing a 'reccie' of a rural property for 'ecological' purposes :D and decided to play with the TR.

So when in Low range on a slightly uphill track with some mud ruts, I selected MR mode and put the 4WD DISPLAY up onscreen, and bugger me after about 5m movement the rear diff padlock flashed and then stayed red. Only for about 20m then it went back to green.

From my small amount of research, this diff can only be locked automatically when TR program thinks it's needed. Interestingly the centre diff remained unlocked.

Next time I will try to get a photo.

.

[nat_89]

On the weekend I was doing a 'reccie' of a rural property for 'ecological' purposes :D and decided to play with the TR.

So when in Low range on a slightly uphill track with some mud ruts, I selected MR mode and put the 4WD DISPLAY up onscreen, and bugger me after about 5m movement the rear diff padlock flashed and then stayed red. Only for about 20m then it went back to green.

From my small amount of research, this diff can only be locked automatically when TR program thinks it's needed. Interestingly the centre diff remained unlocked.

Next time I will try to get a photo.

.


Yeah your dead spot on these cars are super smart do all their diff locking centre and rear automatically and from what i can gather there is a 3 stage locking on each of the lockers, Syneigy might be able to elaborate more.

But its very smart saves leaving it locked when not needed they are truly intelligent cars!!

[sniegy]

Have a look in the FAQ section, I explained how all the diffs & settings work in each of the TR settings.
Cheers

[letherm]

Have a look in the FAQ section, I explained how all the diffs & settings work in each of the TR settings.
Cheers


OK, I'll admit stupidity up front :p

I can't find this in the FAQ. I'd like to look at it. Help !!!

[Basil135]

OK, I'll admit stupidity up front :p

I can't find this in the FAQ. I'd like to look at it. Help !!!

Found it ;)


Driving Techniques
Why can't I lock the centre diff?
You don't need to, the computer will send torque to the most appropriate axles in any condition. This works very well and people don't feel the need to manually control it, unlike some of the other electronic systems. There is no risk of windup with these vehicles.

What's Terrain Response?
Land Rover's system for changing the parameters of various car controls such as throttle, traction control sensitivity, auto shift points and more depending on what terrain the vehicle will be driven on.

GRASS/GRAVEL/SNOW Function.

Engine Management System.
More progressive throttle map to make it harder to induce wheel spin when setting off & easier to drive smoothly.
Automatic Gearbox.
Automatically sets off in 2nd gear in high range to make it harder to induce wheel slip when setting off.
Automatically selects 3rd gear in low range to make it harder to induce wheel slip when setting off.
Electronic Centre/Rear Differential.
Higher preload settings to reduce the chance of wheel slip occuring.
Hill Descent Control.
HDC is automatically switched on when in low range.
Traction Control.
Has a more responsive & aggressive tune so that if any wheel slip does occur, then it is controlled quickly.
Message Centre.
If a manual gearbox is fitted then the drive is advised to set off in 3rd gear if in low range when a different gear is selected.

MUD/RUTS Function.

Engine Management System.
More progressive throttle map to make it harder to induce wheel spin when setting off & easier to drive smoothly.
Automatic Gearbox.
Starts off in 1st gear, will remain in 1st if light throttle is applied.
Changes up with heavy throttle inputs. Stays in gear & torque convertor locks up when throttle pedal is released. Changes down gears if no throttle pedal input & speed goes below a set threshold.
Electronic Centre/Rear Differential.
Higher preload settings to reduce the chance of wheel slip occuring.
Dynamic Stability Control.
Dynamic stability thresholds are tuned to induce less engine throttle intervention.
Hill Descent Control.
HDC is automatically switched on.
Traction Control.
Traction controls tune is more responsive & aggressive & induces less throttle intervention to control excessive wheel slip quickly. But it allows higher slip levels so that traction can be generated.
Message Centre.
Recommends that low range be selected.
Recommends that the air suspension be raised to off road height.
Steering inputs are displayed when a 1/4 turn of the steering wheel is acheived.
Warns if off road height has been selected & not yet reached.
Warns if off an off road height has been inhibited due to trailer electrics being detected. (not sure if new programming has altered this).

SAND Function.

Engine Management System.
Soft intial throttle changing to more agressive as throttle becomes heavier.
Automatic Gearbox.
The gearbox changes up gears later & down gears earlier to keep vehicle in maximum torque band.
Dynamic Stability Control.
Dynamic Stability thresholds are tuned to induce less engine throttle intervention.
Traction Control.
Traction Control tune induces less throttle intervention.
Message Centre.
Steering inputs are displayed when a 1/4 turn of the steering wheel is acheived.
Warns if off road height has been selected & not yet reached.
Warns if off an off road height has been inhibited due to trailer electrics being detected. (not sure if new programming has altered this).

ROCK CRAWL Function.

Engine Management System.
More progressive throttle map to minimise wheel slip when setting off.
Automatic Gearbox.
Automatically sets off is 1st gear. Holds onto 1st gear longer & changes down to 1st gear sooner to maximise low speed control.
Transfer Box.
Rock crawl is only available in Low Range.
Electronic Centre/Rear Differential.
Has very high preload setings to reduce the chance of wheel spin occurring.
Hill Descent Control.
HDC is automatically switched on. The minimum target speed is automatically selected & the system is more aggressive so as to control the speed quickly.
Traction Control.
Traction controls tune is more responsive & aggressive so that if any wheel slip is detected it is controlled quickly.
Message Centre.
The Driver is asked to select low range.
Steering inputs are displayed when a 1/4 turn of the steering wheel is acheived.
Warns if off road height has been selected & not yet reached.
Warns if off an off road height has been inhibited due to trailer electrics being detected. (not sure if new programming has altered this).

Normal mode doesn't actually switch any of the system off or disable them, it just doesn't put them into any special mode. Hence, traction control etc is always active.

What's the difference in Terrain Response between the D3 and D4?
The D4 has Rock Pre-Crawl (applies brakes up to 5km/h in first and reverse forcing the wheels to turn against the brake).

Sand mode & Launch control: It uses a motion sensor on the chassis to detect when it is moving. Once moving, it'll then adjust the throttle response to make it more aggressive.

How do I drive in sand?
Select Sand mode in Terrain Response and ensure stability control (DSC) is switched off. Use low or high range depending on speed, and consider manually selecting gears, keeping the revs high in the soft stuff. Don't use HDC to descend in sand, come down on the gears, often 2/3 low or first high. Tyre pressure guide:

Rim size / pressure
17 / 16
18 / 18
19 / 20
20 / 22

you can go 50% lower than this in extremis but reinflate as soon as you can. Other variables for tyre pressure are weight and tyre construction. The tougher the tyre, the more you need to deflate it, and the greater the vehicle weight the less you can deflate.

All of the other sand driving techniques that can be found in many places apply.

Also have a read one of our classic threads -> http://www.aulro.com/afvb/d3-d4-zone...ing-wrong.html

How do I drive in deep snow?
Use anything but Snow Mode which is for slippery surfaces, not deep snow. DSC off, and manually control the gears, either second low or first low. If you can use third it's not really deep! Try Normal, Mud/Ruts or if it's a real slog, Rock Crawl and low range, DSC off. Trick the car into Extended Mode by grounding it and wheelspinning slowly, then go into Super Extended. Use Snow mode for a thin, slippery covering on a hard surface.


Can the centre diff be manually locked? Can the rear locker be manually controlled?
Neither can be driver controlled. The computer decides, not you. It actually does a very good job. Most of the time.

Do I need the e-diff (rear locker)?
Impossible to say. If you are buying a new car you'd be mad not to specify it as it cannot be retrofitted and will greatly improve the desirability of the vehicle to offroad tourers come resale, and of course the extra capability. Onroad it makes no difference, but offroad the e-diff can turn a medium track into an easy, and a hard into a medium. Simply, the car does it easier. However, it really only makes a difference in rocky conditions, or on steep climbs. In sand and mud it doesn't really improve performance. If you are shopping for a secondhand vehicle favour those with the e-diff.

Does the ABS work in low range?
Yes, although it will permit a bit of wheel lockup. Which is good.

I want to use an airbag jack. There are two exhaust outlets. How do I plug one of them?
Use a test plug available from plumbing supplies, e.g. TLS431 Plumboss Aluminium Test Plug 5 from Eagles Plumbing Plus. Or buy an air jack that is inflated by a compressor, not by exhaust, eg the Bushranger model.

Return to the table of contents

[camel_landy]

On the other cars, the gap on the LHS is space for "Dynamic" mode.

Although the Disco doesn't have the option for "Dynamic", the designers probably wanted to keep the same look & feel across the range.

M

[camel_landy]

Have a look in the FAQ section, I explained how all the diffs & settings work in each of the TR settings.
Cheers
FWIW - An e-Diff NEVER actually locks.

OK, it'll 30,000Nm of torque to make it slip but theoretically it'll never 'lock'. ;)

M

[Goaroving]

Mine look fine!you have an extra symbol! Looks like your D4 is on its roof. Ha Ha

[nat_89]

FWIW - An e-Diff NEVER actually locks.

OK, it'll 30,000Nm of torque to make it slip but theoretically it'll never 'lock'. ;)

M

Oh thanks didn't know that. :)