As above what's the difference with "knob up or pushed down"

Hi,

“Knob up” = manual selection of terrain response setting.

“Knob down” automatic selection of terrain setting depending on what the car senses for power, traction, motion etc.

I usually operate “down” unless I specifically want something else.

Scrumps Somerset - Where the apples do grow and the cider do flow!
2021 Defender 90 D250 HSE in Tasman with white roof.
24MY D300 AB - Verasine Blue - 😀
19MY SDV6 AB - Byron Blue - Gone
17MY D5 SDV6 HSE - Firenze Red - Gone
16MY SDV6 AB -Aruba Silver - Gone
13.5MY SDV6 "HSE Black" - Baltic Blue - Gone
10MY TDV8 HSE Galway Green - Gone
14MY D4 HSE in Scotia Grey - Gone
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your making that up!

It's just pushed down for all those who drive around London not needing it

The OP's RRS, assuming his profile is correct, doesn't have the auto Terrain Response as that was only fitted on L494, not L320.

The TR is pushed down to keep it out of the way, I think. I can't remember ever selecting a programme and then pushing the knob down when I had my 08 TDV8. My 12 SDV6 has a switch to change TR programmes so I can't now check.

If you select a TR programme, say mud/ruts, and then push the knob down, does it cancel the programme or does it remain selected? I would guess it'll stay selected and the knob is then just out of the way. When you turn off the engine, the programme will revert to road mode after a certain period so you can't leave it in an off road programme accidentally. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

scrumps wrote:

Hi,

“Knob up” = manual selection of terrain response setting.

“Knob down” automatic selection of terrain setting depending on what the car senses for power, traction, motion etc.

I usually operate “down” unless I specifically want something else.

Scrumps

Long time since had my TDV8 but I though pushed down it's permanently active and basically does it's own thing, when raised driver can manually control different settings, which is basically what Scrumps said I guess.

Cheers
Col

Last edited by Col on Wed Jun 10 2020 7:51am. Edited 1 time in total

If in doubt read the manual  07MY RRS TDV6
Arctic Frost
Aspen Interior

Col wrote:

Long time since had my TDV8 but I though pushed down it's permanently active and basically does it's own thing, when raised driver can manually control different settings, which is basically what Scrumps said I guess.

Cheers
Co9l

Surely if it's permanently active it must allow it to do doing something, otherwise in might as well just be switched of when the knob is down. I guess it depends on how you interpret what it actualy says in the handbook, although automatic probably isn't the right description.

Cheers
Col

I think you are getting confused as TR cannot be turned off (unless there is a fault). This is normally the onroad setting and the computer runs everything - the other TR settings have to be manually selected - there is nothing automatic about it - all in the handbook - just checked.

Garry 07MY RRS TDV6
Arctic Frost
Aspen Interior

I didn't even know my knob could be pushed down... fnarr, etc

Surely none of us actually read manuals? For anything? Ever? Hand in your man cards!  2014 BMW 530d Touring, 2006 BMW 650i, 2018 Mini Cooper S

I didn't say it could be turned off, I said it was permanently active so it must be doing something in that mode. I also said automatic was probably not the right word to describe what it does do, but if it is controlled by computer with no input from the driver in that mode some may describe that as automatic operation. I think this is a debate that could just go on and on based on choice of words.

Cheers
Col

If no special programme is selected, then the system just runs the default road-biased traction control / DSC settings. Centre diff can come in to play too, I think, but obvoiously on tarmac it's very unlikely.

Once a special programme is selected, then the various TC / DSC / HDC / centre diff locking progression are altered to suit that chosen special programme.

The question seems to be whether, once a special programme is selected, can the knob be pushed down and the selected programme still continue to work? I think it does, but I wouldn't bet my house on it. When I had my TDV8, if I was using a special programme, I always left the knob in the up position, partly because I would sometimes want to change the programme used whilst driving. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

I am sad to discover that my 59 plate knob does not retract

There's a joke in there somewhere... 2014 BMW 530d Touring, 2006 BMW 650i, 2018 Mini Cooper S