MY2011 2.0D Traction Control On Or Off - Subaru Forester Owners Forum
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post #1 of 17 (permalink) Old 10-31-2011, 03:29 AM Thread Starter
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MY2011 2.0D Traction Control On Or Off

Just got my 2011 2.0D Premium. The only question I have about it is the Traction Control OFF button. When would I use it. I intend to do many beach trips so therefore will hit soft sand. Do I want to TC on or off.

Other posts mention VCD. Is that the same as TC?
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post #2 of 17 (permalink) Old 10-31-2011, 03:48 AM
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i find my 2008 is almost useless offroad with traction turned on, especially climbing hills or on the beach. give it a go either way and you will get a good feel of the difference it makes
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post #3 of 17 (permalink) Old 11-08-2011, 08:47 PM
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I just bought a 2011 Forester and asked the salesman under what circumstances would I turn OFF the traction control and he said "if you want to get crazy with it, fishtailing the back end and stuff". I'm thinking, yeah right. That's why Subaru put that feature there. ***?!
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post #4 of 17 (permalink) Old 11-09-2011, 11:32 AM
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I was told it is only turned off in a towing situation.

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post #5 of 17 (permalink) Old 11-14-2011, 08:52 PM
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Quote:
Originally Posted by ZapWizard View Post
I was told it is only turned off in a towing situation.
Owners manual says it's useful to turn it off
"to facilitate the following opertions:
- a standing start on a steeply sloping road with a snowy, gravel-covered, or otherwise slippery surface.
- extrication of the vehicle when it's wheels are stuck in mud or deep sno
"

I read the last one as rocking the car to get it moving in that situation. Sounds like I might try just turning it off the next time I get to try out this car in the snow. (in a parking lot till I figger it out!)
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post #6 of 17 (permalink) Old 11-15-2011, 02:56 AM Thread Starter
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I took an offroad track last weekend and got into a situation where two opposing wheels (front and back) lost traction on uneven ground and were spinning and I couldn't go forward. I let them spin for 5 or 10 seconds then stopped and rolled backwards and tried again and the same thing happened. From what I've seen on Youtube videos of the Forester the traction control was supposed to have locked the spinning wheels and let the wheels with traction drive but it didn't happen. I couldn't turn around so on the third attempt rolled back and took a different angle and got through. Does it need 3 wheels with traction to work?

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post #7 of 17 (permalink) Old 11-15-2011, 05:26 PM
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Quote:
Originally Posted by Holdencars View Post
I took an offroad track last weekend and got into a situation where two opposing wheels (front and back) lost traction on uneven ground and were spinning and I couldn't go forward. I let them spin for 5 or 10 seconds then stopped and rolled backwards and tried again and the same thing happened. From what I've seen on Youtube videos of the Forester the traction control was supposed to have locked the spinning wheels and let the wheels with traction drive but it didn't happen. I couldn't turn around so on the third attempt rolled back and took a different angle and got through. Does it need 3 wheels with traction to work?
Did you turn the VDC system off when on the off road track? If so the traction control that would have helped it attempt to go was also off.

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post #8 of 17 (permalink) Old 12-12-2011, 03:30 AM Thread Starter
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VDC was on. Seems all Subaru's suffer when they get two diagonal wheels off the ground and it's a common flaw not yet overcome. Probably the same for any 4x4 unless fitted with diff locks. Subaru could probably fix it with TC/VDC if they wanted to. The lesson learned is either have enough momentum to get at least one back on ground for traction or getting the angle right so two diagonal wheels don't lose traction at the same time.

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post #9 of 17 (permalink) Old 12-12-2011, 04:41 PM
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Quote:
Originally Posted by Holdencars View Post
I took an offroad track last weekend and got into a situation where two opposing wheels (front and back) lost traction on uneven ground and were spinning and I couldn't go forward. I let them spin for 5 or 10 seconds then stopped and rolled backwards and tried again and the same thing happened.
It is interesting that the electronics didn't help in this situation.

I've found in a similar situation in a Pajero that the traction control didn't help at all when I was gentle with the accelerator and the wheels were only spinning slowly. That is, it needed some revs (maybe 2000+ rpm), clutch fully out and significant wheel-spin before the electronics stepped-in and braked the spinning wheels and got us moving again. It seemed a bit mechanically 'unsympathetic' and threw dust everywhere, but this is how the system is apparently tuned and it needs somewhat aggressive driving to make it work effectively.

Do you remember if you had sustained and significant wheel-spin at the time?

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post #10 of 17 (permalink) Old 12-12-2011, 10:21 PM Thread Starter
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I wasn't too enthusiastic on sustaining wheel spin because the surface was rocky and didn't want to chew up the tires. I'd also watched Bluefox's youtube clip beforehand and knew it probably wouldn't do any good. This is good educational watching -

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post #11 of 17 (permalink) Old 12-12-2011, 10:41 PM
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there's no VDC on BF's car, is there?

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post #12 of 17 (permalink) Old 12-13-2011, 03:49 AM
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there's no VDC on BF's car, is there?
nope, in that video he was experimenting with modifying the e-brake to simulate the VDC system.... it didn't work.

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post #13 of 17 (permalink) Old 12-13-2011, 05:07 AM
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If any of you guys are interested ive almost come up with a prototype locker to lock the rear differential in our Subarus. All Subies from the mid 80's till 2011 with R160 standard diffs

With some of us hardcore aussies and our Subies it will cut out the diagnal spin, possibly helping with the standard centre VLSD. But with a locked centre in an L-Series or with DCCD as some of the hardcore offroad Subies have it will be just as good as a real 4x4. It won't stop 1 wheel spin at the front end like BlueFox has/had but on a rock climb or in sand there is a good chance it will make a good improvment.

Thought some of you guys might be interested.

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post #14 of 17 (permalink) Old 12-13-2011, 05:49 AM
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Quote:
Originally Posted by Holdencars View Post
I took an offroad track last weekend and got into a situation where two opposing wheels (front and back) lost traction on uneven ground and were spinning and I couldn't go forward. I let them spin for 5 or 10 seconds then stopped and rolled backwards and tried again and the same thing happened. From what I've seen on Youtube videos of the Forester the traction control was supposed to have locked the spinning wheels and let the wheels with traction drive but it didn't happen. I couldn't turn around so on the third attempt rolled back and took a different angle and got through. Does it need 3 wheels with traction to work?
i got stuck in mud with my 2011 2.5x with MT. I surprised i couldn't get out with VDC on and i sustained wheelspin for a good amount of time and i couldnt get out. I turned VDC off and i was able to get my self unstuck. So take it for what its worth.
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post #15 of 17 (permalink) Old 04-09-2012, 05:38 AM
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Turn off TC for all wheels slipping

I still need to verify this, since I have not taken the OB to the beach yet, but my understanding is that TC/ATC/VDC works similar to ABS by applying limited braking to the slipping wheel. Normally this is a good idea. But, if the vehicle is on a surface where all wheels are slipping, i.e. ice or sand, the engine starts fighting the brakes. Turn off TC/ATC/VDC and use your driving skills.

At one time, I found a youtube video of someone burning up their clutch on a beach. Presumably TC/ATC/VDC was left on.
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