Member Since: 31 Jan 2007
Location: Asker
Posts: 1
Terrain Response system
Does anyone know what the Terrain Response system do with the differentials, throttle response, air suspension, ABS, DSC, gearbox etc in the particular modes?
I know that in “snow mode†the throttle response get different and it sometimes start in 2nd gear. But exactly what is happening in the particular modes?
Does the antiskid get turn off in “sandmode†and will the suspension get softer?
I have searched the internet for this information, but I can’t find it? I would think this is relevant information for everyone that like to use the “tool†to the fully end:)
Click image to enlarge
- Land Rover Discovery 3 2.7 V6 TDI HSE
- Audi S4 2.7 V6 Biturbo
- (x) Audi urquattro Sport (87' mod) 450 hp
- (x) Audi urquattro (81' mod)
- (x) Audi GT Coupe (84' mod)
31st Jan 2007 11:23 am
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
LR have never published the full TR mappings (probably for sound commercial reasons) There is some good descriptive material available on GTR though...
In general, TR changes the behaviour of the following systems
Engine control
Suspension - faster or slower crossvalve locking and auto height change in some modes
ABS - which is also the functional component in the HDC and TC systems
Auto gearbox gearchange thresholds
Centre (and optional rear) progressive differential locking
Note that DSC behaviour is not controlled by TR and must be manually switched 'off' by the driver, although in reality, this doesn't truly switch it off but just raises the threshold where it will cut in
31st Jan 2007 11:48 am
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
Nice pic by the way.
I find (being an off road ) that its best to take for granted what TR does, turn off DSC and drive with a light throttle unless more power is needed. Select the appropriate setting of course for the terrain ahead.
Seems to work and so far (I will regret this) have only needed a tow once on a very muddy and rutted track.
31st Jan 2007 12:04 pm
LeighW D3 Decade
Member Since: 31 Jan 2006
Location: Brisbane, AUS
Posts: 920
Hi Frisak - I don't know where it came from but this PDF gives a bit more than the owner manual.
The old girl is on her third engine...
* first ran a bearing (design failure in original engine)
* second had a failure of the water outlet on top of the engine (pls check yours)
31st Jan 2007 12:14 pm
lawman
Member Since: 06 May 2005
Location: South East
Posts: 72
I don't understand the PDF instructions for eg snow where it says the lockers are on. I have front and rear lockers and, in the recent snow, put TR in snow mode and booted the throttle on a private road. Whether the car was stationary, struggling for grip, or just driving with grip there was no sign on the 4x4 info' screen of any red closed padlocks. Am I missing something here?
In our "old technology" L200 on snow we can gun the living daylights out of it and it will just go straight without a fuss. It's got a difflock, but have only needed to use it once on a steep gradient of mixed fresh snow, packed snow and sheet ice.
If the lockers don't need to come on, they won't . As I understand it, the different TR progs simply enable the sensitivity of the diffs to varying degrees. If you booted the D3 on fresh snow it simply wouldn't have needed the diffs to lock as it is reasonably grippy for traction. It's packed snow and ice that will have the red padlocks flashing up on the display.I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
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) that its best to take for granted what TR does, turn off DSC and drive with a light throttle unless more power is needed. Select the appropriate setting of course for the terrain ahead.
