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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
Turning off TC
Would one generally turn the TC off when driving in snow or ice? We live on a hill and I seem to remember the last time we had snow a jaguar with TC having way more trouble getting up than similar vehicles without.. I didn't have a defender with TC then and never had an issue but do now have it and just wondered for the winter..
Post #555971 14th Aug 2016 3:58pm
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apt100



Member Since: 05 Mar 2015
Location: Derbyshire
Posts: 1547

United Kingdom 2016 Defender 90 Puma 2.2 XS CSW Aintree Green
Is this a hypothetical question... because I don't believe you have the option of switching off TC on your 2011 Puma?

There have been a few threads discussing fitting switches or pulling fuses etc.

edit to add
In the last MY2015 with DSC, there is a switch to disable it, which the user guide advises might help with snow etc. I think turning off DSC also tones down the ETC (and *maybe* even the ABS a little??).
For earlier models as far as I am aware, there is nothing you can do (as standard without a modification) to adjust the ETC setting?
Post #555975 14th Aug 2016 4:16pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
This works for me, thought it was a know thing!
"NOTE: TC can be disabled by operating the brake pedal ten times within ten seconds, when the ignition is turned on. TC will be re-activated when the ignition is turned off then on again."
Post #555981 14th Aug 2016 4:54pm
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Rosco



Member Since: 03 Dec 2010
Location: Burntwood
Posts: 1833

United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Montalcino Red
That does work, but I think it also disables the ABS as well. From memory when you do press the pedal ten times it illuminates the TC and ABS warning lights on the dashboard.

I think the issue the Jaguar driver had would be more to do with tyre size. Typically they (along with many other cars fitted with alloy wheels) have big fat tyres, which are great for cornering on tarmac. Sadly they are rubbish at cutting into snow to find grip so just "float" on the surface. 2007 - Stornoway Grey 90 XS SW - Gone
2002 - Black Discovery II - Gone
2014 - Montalcino Red 110 XS SW
Post #555982 14th Aug 2016 5:02pm
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apt100



Member Since: 05 Mar 2015
Location: Derbyshire
Posts: 1547

United Kingdom 2016 Defender 90 Puma 2.2 XS CSW Aintree Green
Pinky wrote:
This works for me, thought it was a know thing!
"NOTE: TC can be disabled by operating the brake pedal ten times within ten seconds, when the ignition is turned on. TC will be re-activated when the ignition is turned off then on again."


It's the first mention of it I recall Thumbs Up
As mentioned I have seen plenty of discussion about pulling fuses or adding switches etc.
Is that from 2011 Owner Manual?
Also I have no idea if that applies to later models as well?
This is MY16 info from owners manual...


Click image to enlarge
Post #555987 14th Aug 2016 5:14pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
Rosco wrote:
That does work, but I think it also disables the ABS as well. From memory when you do press the pedal ten times it illuminates the TC and ABS warning lights on the dashboard.


Which is good! You don't want ABS in the snow!
Post #556016 14th Aug 2016 7:07pm
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Cold_n_Wet



Member Since: 15 Oct 2012
Location: Bergen
Posts: 244

Norway 
Really, please explain the logic around this ? "Rafiki" 2007 110 STW - Rolling rebuild.
Post #556024 14th Aug 2016 7:23pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
In snow or mud a locked wheel will build up snow or mud in front of it stopping you substantially quicker than a moving sliding wheel..
Post #556035 14th Aug 2016 7:46pm
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Rosco



Member Since: 03 Dec 2010
Location: Burntwood
Posts: 1833

United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Montalcino Red
But a locked wheel has no control..... 2007 - Stornoway Grey 90 XS SW - Gone
2002 - Black Discovery II - Gone
2014 - Montalcino Red 110 XS SW
Post #556039 14th Aug 2016 7:54pm
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Cold_n_Wet



Member Since: 15 Oct 2012
Location: Bergen
Posts: 244

Norway 
Then ABS should be left on, a locked wheel does not steer the vehicle, and hence how ABS works in the snow. "Rafiki" 2007 110 STW - Rolling rebuild.
Post #556040 14th Aug 2016 7:56pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
That's fine if you want to steer into a wall but if you want to stop before it I would rather not have ABS on.. Why would you want to steer if you are trying to stop? I have had many occasions where I have no need to steer, I just need to stop in a hurry!
I guess it's six of one and half a dozen of the other!
At least without ABS you have the option. If you want to steer pump the brakes ( like we did in the old days) and if you want to stop hold them on hard!


Last edited by Pinky on 14th Aug 2016 8:16pm. Edited 1 time in total
Post #556042 14th Aug 2016 8:00pm
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Cold_n_Wet



Member Since: 15 Oct 2012
Location: Bergen
Posts: 244

Norway 
22 years of driving in Norway winter, I have completely different experience in snow.

A vehicle with ABS will stop quicker then a non ABS vehicle given that solid pressure is held on the pedal.

On mud I believe the same is true, but I do not have not enough experience to make a conclusion.

I guess we see the world from different angles and experience´s. "Rafiki" 2007 110 STW - Rolling rebuild.
Post #556052 14th Aug 2016 8:15pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
I guess your right, I have had 40 years driving without ABS just altering brake pressure to suit the conditions.
This is my first vehicle with ABS and it's difficult to release control to a machine!
It's a bit like the recent events with the tesla and its auto drive or whatever it's called.. I guess I'm just old school and drive using the feedback from the controls Wink
Post #556056 14th Aug 2016 8:25pm
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DSC-off



Member Since: 16 Oct 2014
Location: North East
Posts: 1410

United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Aintree Green
ABS on, retain control of steering while braking as efficiently as possible.

TC on, brakes spinning wheel when grip is lost, rear axle only, to keep moving.
Defender TC works differently to road car TC, which generally cuts power to stop spinning wheel.

DSC off, when in deep mud or snow. If DSC is fitted.
The only reason for switching DSC off is that it can cut power and brake wheels when you actually need a bit of wheel spin to keep moving, or are already stuck.

These systems are set up to work in an all terrain vehicle, on all types of surfaces, trust them to do their job.
Post #556059 14th Aug 2016 8:29pm
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Cold_n_Wet



Member Since: 15 Oct 2012
Location: Bergen
Posts: 244

Norway 
I turn the DSC off on SWMBO Skoda oktavia 4x4 when I want to play in the snow .... Laughing

but if its bad weather then its on... Thumbs Up "Rafiki" 2007 110 STW - Rolling rebuild.
Post #556060 14th Aug 2016 8:38pm
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