VDC switch…Can someone please explain in English - Subaru Forester Owners Forum
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post #1 of 7 (permalink) Old 09-18-2009, 12:33 PM Thread Starter
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Talking VDC switch…Can someone please explain in English

Can anyone explain in layman’s terms what the VDC button is for and when I may or may not have to use it.
Never had this in any of my other Foresters and I’m confused!

Help Kevin
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post #2 of 7 (permalink) Old 09-18-2009, 12:39 PM
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WikiAnswers - What is VDC in a car
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post #3 of 7 (permalink) Old 09-18-2009, 01:44 PM
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Quote:
Originally Posted by kakarp View Post
Can anyone explain in layman’s terms what the VDC button is for and when I may or may not have to use it.
Never had this in any of my other Foresters and I’m confused!

Help Kevin
Good question!

I have heard that is some vehicles, pushing the button does not turn off all the driver nanny aids.

What exactly does it disable in the 09/10 Forester?

ABS?

Traction Control?

Stability Control?


The answer to this then will help determine when to push the button.

In our Mystique, the button only turned off the traction control (there was no stability control back then) but left the ABS functioning.

2009 Subaru Forester Touring Edition, AT
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post #4 of 7 (permalink) Old 09-18-2009, 02:03 PM
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From the explanation I got:

If you have to spin your tires you should hit the VDC and thus de-activate it.
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post #5 of 7 (permalink) Old 09-18-2009, 06:31 PM
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That answer is very similar to what I heard. Turn it off if you want to spin donuts on the on the lake while heading out to your favorite ice fishing spot. I should have an opportunity to test it out this winter.

fishtherainy - 2010 Premium all weather!
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post #6 of 7 (permalink) Old 09-18-2009, 06:36 PM
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abs and stability stay on and traction is off

you can spin the tires but you can't slide sideways. So not a lot of e-brake corning fun.

I wanted to push the button and do some sliding, but as soon as you get sideways the car wants to stop you and correct itself.

09 Forester XT
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post #7 of 7 (permalink) Old 09-22-2009, 05:48 AM
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"VDC" (Vehicle Dynamics Control) is Subaru's name for what's generaically called an "anti-skid system". From "How Stuff Works":

Quote:
Anti-skid Systems
Anti-skid systems, often referred to as electronic stability control (ESC), go by other names depending on the manufacturer. GM calls it StabiliTrac, Ford dubs it AdvanceTrac, and Chrysler calls it Electronic Stability Program (ESP). Other names include Vehicle Dynamics Control (Subaru), Dynamic Stability Control (Volvo), Vehicle Stability Assist (Honda) and Vehicle Stability Control (Toyota). For a complete list of anti-skid system names, check out the NHTSA's ESC-equipped vehicles list.

An anti-skid system uses several sensors to detect a loss of grip in your vehicle, then works with the anti-lock brake system to apply individual brakes to help keep the vehicle on its intended path. In some cases, an anti-skid system also reduces engine power.

So what does this mean to the driver? Well, if you approach a corner too rapidly and your vehicle begins to plow straight ahead, an anti-skid system will detect that the vehicle is not on its intended path and intervene by applying the inside brakes. This will rotate the vehicle through the turn and, hopefully, save you from going off the road. Anti-skid systems can't defy the laws of physics, so they won't help you take a 90-degree turn at 100 mph, but they can be quite helpful in most driving. Anti-skid systems are available on most SUVs, but they are usually optional. Make sure to order your SUV with an anti-skid system.
HTH,
Jim / crewzer

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