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03-02-2012, 12:38 PM | #1 |
Scooby Newbie
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Join Date: Feb 2012
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Vehicle:2012 Impreza Ice Silver Metallic |
2012 Impreza 2.0i Stability Control Function
Just purchased a 2012 Impreza 2.0i Premium with the All Weather, Alloy, and Moonroof Package. It is the CVT model (5-spds were a month out). Got the chance to test out the AWD yesterday after work. Came home to 8 inches of heavy, crusty snow on the driveway. Long story short, it works great. However, I was playing around on my road (also not plowed) and tried to turn off the Vehicle Stability Control to see how differently the AWD would operate without the traction control and skid control chomping at the brakes. It didn't operate any differently! I have consulted my owners manual, the .pdf owners manual on the mysubaru.com site, searched this site, and checked for TSB's on nhtsa.gov. The only conclusion that I have come up with is that the button does not actually deactivate the VSC (therefore making the owners manual incorrect), or that there is something wrong with my car. I've been reading through this forum for about two hours now, and I've read all the posts regarding different functionality for different years, and for the STi. Anyone else have this issue?
Thanks for hanging in there, I know its a lot to read, lol. |
03-02-2012, 07:21 PM | #2 |
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Vehicle:2012 Impreza CVT HB |
It turns off *traction* control.
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03-02-2012, 08:30 PM | #3 |
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03-02-2012, 08:57 PM | #4 |
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I think 'weakens' it is a more accurate term.
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03-05-2012, 03:33 PM | #5 |
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Yeah, Just tried another experiment yesterday with the on and off button. With the VSC on, the traction control clamps down / cuts throttle so that it won't rev past about 3,000 RPM. However with VSC off, the throttle is not limited and will rev up as high as you want, even though the brakes are still chomping away at the spinning tires. Found that it actually transfers torque a little better like this (at about 4,500 rpm, as high as I felt comfortable letting it go), I'm sure at the expense of the brakes and drivetrain components. Still, like I noted before, it will not allow any rotation of the chassis without the VSC killing it. As far as a solution? My only thought is to find out where the gyrometer (yaw sensor) is in the car, and install a switch to kill power to it or something. This would effectively not allow the car to sense yaw (rotation). However I'm not completely sure it would have any effect on the intervention of the traction control. And it may just immobilize the car completely, depending on if the computer knows what to do without the gyrometer. My thoughts are that if any sort of mod is completed, all warranties will be void. |
03-02-2012, 09:09 PM | #6 |
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No I wouldn't even say it weekends it, in my experience it's the exactly the same with it off as it is on. It does turn off the torque reduction part though so you can spin your wheels but that's it. I'm really mad about this too and iv been trying all kinds of ways to turn it off fully.
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03-03-2012, 12:36 AM | #7 |
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We really need to find a way to disable this fully. Anyone have any ideas?
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03-03-2012, 01:03 PM | #8 |
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Vehicle:2012 Impreza CVT HB |
Haha!
I was just thinking about how much I hated the drive home yesterday, in a blizzard, cause I couldn't 4-wheel drift it! It's nice to see others like to do that, too. Although you actually *can* drift it, as long as you don't turn the steering wheel off of 'center' once you get the chassis angles off of the direction of travel. |
03-03-2012, 02:59 PM | #9 |
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Is this the same with sport models? Can anyone with a sport chime in and let us know if your able to fully disable your VDC "stability control"
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03-03-2012, 05:15 PM | #10 |
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Sport Premium 5-speed here. Cannot fully disable VDC.
I'd like to when I start autocrossing so I hope there is a bypass! |
03-03-2012, 05:48 PM | #11 | |
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Quote:
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03-03-2012, 05:52 PM | #12 |
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03-05-2012, 03:55 PM | #13 |
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I could not find an article on the internet but I swear I read it somewhere recently. At some point in the near "The nanny state" is putting regulations in effect that will outlaw TCS overrides on cars. On my 2009 Wrangler. You could "turn off" the TSC but It wasn't really off. Just reduced. It would completely shut off in 4Low because 4low vs. Traction control fighting back ends badly!
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03-06-2012, 01:11 AM | #14 |
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how are you trying to turn it off? press and release? press and hold? press hold and watch it cycle?
i believe each does something different |
03-06-2012, 12:18 PM | #15 | |
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Quote:
Default is VSC on when the car is started. Traction control on, Skid control on, Engine Management on. #1) One press while driving: VSC off light comes on, traction control is on, VSC is on, Engine management (killing throttle while wheels slip) is off. #2) One press while car is stopped, but still in gear (Drive): Same results as #1. #3) Press and hold for different intervals, while car is stopped and while in motion. 5 seconds, 10 seconds, 15 seconds: Same results as #1. #4) Press and hold for 30 seconds, while car is stopped and while in motion: VSC Off light is ON for 30 seconds, then shuts OFF. VSC button no longer responds to pressing. Vehicle systems act in default setting. Shut off car, turn it back on, VSC button operates normally. Owners manual confirms this function. The thing I don't get is that the owners manual says: "Pressing the switch to deactivate the Vehicle Dynamics Control system can facilitate the following operations. -A standing start on a steeply sloping road with a snowy, gravel-covered, or otherwise slippery surface -Extrication of the vehicle when its wheels are stuck in mud or deep snow. When the switch is pressed during engine operation, the Vehicle Dynamics Control OFF indicator light on the combination meter illuminates. The Vehicle Dynamics Control system will be deactivated and the vehicle will behave like a model not equipped with the Vehicle Dynamics Control system. When the switch is pressed again to reactivate the Vehicle Dynamics Control system, the Vehicle Dynamics Control OFF indicator light turns off. With the Vehicle Dynamics Control system deactivated, traction and stability enhancement offered by Vehicle Dynamics Control system is unavailable. Therefore you should not deactivate the Vehicle Dynamics Control system except under above-mentioned situations. NOTE: -The Vehicle Dynamics Control system will be activated automatically when the engine is started. If the switch is held down for 30 seconds or longer, the indicator light turns off, the Vehicle Dynamics Control system is activated, and the system ignores any further pressing of the switch. To make the switch usable again, turn the ignition switch to the “LOCK” position and restart the engine. -When the switch is pressed to deactivate the Vehicle Dynamics Control system, the vehicle’s running performance is comparable with that of a vehicle that does not have a Vehicle Dynamics Control system. Do not deactivate the Vehicle Dynamics Control system except when absolutely necessary. -Even when the Vehicle Dynamics Control system is deactivated, components of the brake control system may still activate. When the brake control system is activated, the Vehicle Dynamics Control operation indicator light flashes. According to this, the Traction control, Skid control, and Engine Management should be off. Until you get to the last two lines, where it says they may still be on? Doesn't make any sense. |
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03-06-2012, 03:30 PM | #16 | |
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Quote:
I've even gone as far as pulling the fuse for VDC/ABS which did disable all traction control even abs but it also disabled power steering and that made the car pretty much imposable to drive. There must be a way to fully disable the stability control "most likely hidden" and still leave ABS and power steering on. Here's a short video I made when testing different methods. Its hard to see in the video but the stability control was working and applying brakes to keep me from really being able to slide =( Last edited by Alairmore; 03-06-2012 at 03:37 PM. |
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03-06-2012, 11:43 AM | #17 | |
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03-07-2012, 09:52 AM | #18 |
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What you are still getting is EBD, even though TC and VDC are off. You can still autocross with it turned "OFF", just don't do a lot of trail braking or the system kicks on pretty violently.
I have gotten my '12 stuck in the mud, greatly sucked. Did not matter if TC/VDC was turned off or on, had to get pulled out. OEM 15" tires are terrible! But you can autocross, my video from when I got the car, TC off, OEM 15" tires, CVT-- |
03-07-2012, 01:07 PM | #19 | ||
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Quote:
Quote:
Because you have a base model with the CVT, I would greatly appreciate if you wouldn't mind leaving some input on a topic I started about the "Sport" light in the center cluster. http://forums.nasioc.com/forums/show....php?t=2320551 |
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03-07-2012, 03:44 PM | #20 | |
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Quote:
And yeah I love sliding around doing donuts and "drifting" AWD cars in snow and gravel its so much fun and very controllable on its own with out a nanny system messing things up. That would be awesome if you could find the yaw sensor potentially we could then hook up a switch to kill power to it. |
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03-07-2012, 12:36 PM | #21 |
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Slightly off-topic, but your awesome autocross video also showcases one of the 2 things that irk me just slightly. You have to turn the wheel a lot to get anywhere. Even just turning a corner takes a full 360 degree turn of the wheel. Yes it has an awesome turning radius, but I just wish it turned faster. (The only other thing I don't love about the car is no automatic locks =0)
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05-10-2012, 02:32 PM | #22 | |
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Quote:
It pretty much completely negates any usefulness of the floppy paddle shifters. |
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09-03-2012, 11:26 AM | #23 | |
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09-03-2012, 11:40 PM | #24 |
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Well not every car has a turning radius like a smart, so that's just pushing it. I actually think the turning radius is pretty good.
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09-04-2012, 07:11 PM | #25 |
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The turning radius IS good! As good as any car I've owned. FEELS as tight as my 96 and 97 Jettas, and they were lauded for their U-turn abilities.
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