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2003-2009 Nissan 350Z

whats VDC

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Old Feb 8, 2005 | 11:05 PM
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From: oregon
Default whats VDC

what does it do and what does it mean, is it a good option to have>>????
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Old Feb 8, 2005 | 11:31 PM
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VDC = Vehicle Dynamic Control

Basically, the system differs from TCS (Traction Control System) in that while TCS will only detect rear wheel slip and cut power accordingly, VDC measures all four wheel speeds and will apply certain brakes and cut power if it senses the car has left a controllable envelope. Basically TCS keeps you from burning your rears, while VDC keeps you straight and true for the most part. I'd say its a pretty good option to have, you can turn it off if you dont need it anyway.
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Old Feb 9, 2005 | 05:45 PM
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so you still have the traction control button, along with vdc or only vdc, so if its a rear wheel drive car why the heck would you want the front wheels to be moniterd? Its basicly the same aspect just a diffrent name.
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Old Feb 9, 2005 | 05:49 PM
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It's not the same as Traction Control... the VDC keeps your car from going out of control...so it trys to keep the car straight if you go into a slide... not just traction. Hope that helps.
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Old Feb 9, 2005 | 06:17 PM
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Originally posted by o-town
so you still have the traction control button, along with vdc or only vdc, so if its a rear wheel drive car why the heck would you want the front wheels to be moniterd? Its basicly the same aspect just a diffrent name.
TCS is a required system for VDC. VDC is a stage upgrade from TCS. You can have TCS w/o VDC but you can't have VDC w/o TCS.
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Old Feb 9, 2005 | 06:17 PM
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Let's get more technical here...

TCS = Traction control system: This system uses the same wheel speed sensors that the ABS system uses to monitor rear wheel speeds. In the event of a variance greater than that which can be achieved by inner/outer tire turning radiuses, the TCS system will manipulate the throttle in an attempt to elminate the variance in wheel speeds.

VDC = Vehicle Dynamic Control: With this system, all wheel speeds are monitored. In addition to 4 wheel speed-variance detection, the deployment of a "yaw sensor" (this sits under the center console because this is the center-point of the car) allows the VDC system to detect "offline" conditions (a condition in which the car is traveling in a direction other than which the car is pointing down its' centerline). While the TCS system only manipulates throttle/brakes on the back tires to elminate wheel spin (i.e. gain traction), the VDC system can manipulate throttle and braking force individually at all four wheels in an effort to bring the car back online. The VDC system has an "off switch" in the same location as the TCS system, and includes a similar "VDC OFF" light.

This do it for you?
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Old Feb 10, 2005 | 06:50 AM
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i've read posts on this board where VDC, even though disengaged, will intervene at high g's (like at a track) and causes the car to not behave like the driver expects. So if you plan on doing track work, I'd stay away from those electronic nannies.
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Old Feb 10, 2005 | 11:05 AM
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Originally posted by julian
i've read posts on this board where VDC, even though disengaged, will intervene at high g's (like at a track) and causes the car to not behave like the driver expects. So if you plan on doing track work, I'd stay away from those electronic nannies.
VDC/TCS can be disengaged by pushing the VDC/TCS OFF button. It is the Brake LSD (different from the Mechanical LSD) and the ABS that can't be disengaged. It's stated in your Owner's Manual in the VDC/TCS section. With the button off the car will let you spin your tires to your heart's desire (TCS OFF) and it will not correct for excessive understeer/oversteer (VDC OFF). If you have a 5AT and brake torque way past the stall speed the car will try to protect itself from damage by attempting to cut your throttle. This is not TCS because the tires are not moving. Also, if you're already moving and the brake and accelerator are pressed in a method that would make the car think it is a panic stop, you will engage the Brake Assist (BA) System which will instantaneously apply 100% brake pressure and may cut throttle.
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