jimmy303 Posted January 23, 2007 Report Share Posted January 23, 2007 The speed sense (VSS) allows the navigation system to be more accurate and keep your location current in case you lose satellite signal temporarily, like in a long tunnel. The nav uses this info mainly when you already have a destination and route active, so the cursor (you) will keep moving along the predetermined route, even if you are in a tunnel, canyon, heavily wooded area, amidst very tall buildings, or if you are James Bond and your car goes underwater. Bad weather can interfere with this signal, occasionally. Quote Link to post Share on other sites
Local399 Posted January 23, 2007 Report Share Posted January 23, 2007 Thank you for the good info... On my VW Touareg, is this a difficult thing to install? I remember the installer saying something about needing extra parts. Is this true? Or??? And, since I havent noticed anything weird, inaccurate, etc when it's not hooked up, should I worry about having it connected? And, finally, is the only way I know its not connected by the speed pulse showing 0? Thanks, Steve Quote Link to post Share on other sites
cntrylvr79 Posted January 23, 2007 Report Share Posted January 23, 2007 From what I remember the only way to get vss on the touareg is with a canbus adaptor. Not a cheap piece. If you haven't noticed any problems with the accuracy, I wouldn't worry about it then. And yes the only way to know it's not connected is that the speed pulse reads 0 and the leaarning status will say simple hybrid instead of 3d hybrid. Quote Link to post Share on other sites
jimmy303 Posted January 23, 2007 Report Share Posted January 23, 2007 Correct, the VSS runs through the can-bus system. Quote Link to post Share on other sites
Local399 Posted January 24, 2007 Report Share Posted January 24, 2007 From what I remember the only way to get vss on the touareg is with a canbus adaptor. Not a cheap piece. If you haven't noticed any problems with the accuracy, I wouldn't worry about it then. And yes the only way to know it's not connected is that the speed pulse reads 0 and the leaarning status will say simple hybrid instead of 3d hybrid. So my installer was correct! Makes me feel a bit better now. Thanks again for all the great info!!! Steve Quote Link to post Share on other sites
cntrylvr79 Posted January 24, 2007 Report Share Posted January 24, 2007 We try.... well sometimes anyway. Quote Link to post Share on other sites
Cincycaddy Posted January 25, 2007 Report Share Posted January 25, 2007 Thank you for the good info... On my VW Touareg, is this a difficult thing to install? I remember the installer saying something about needing extra parts. Is this true? Or??? And, since I havent noticed anything weird, inaccurate, etc when it's not hooked up, should I worry about having it connected? And, finally, is the only way I know its not connected by the speed pulse showing 0? Thanks, Steve Steve typically when push comes to shove you can almost always get a usable VSS at a wheel sensor, the signal has to start off analog somewhere. Should be a sensor on the wheel that has two wires that will feed into the ABS etc, grab your DMM, and pick one. Chris Quote Link to post Share on other sites
jimmy303 Posted January 26, 2007 Report Share Posted January 26, 2007 You might even be able to find a usable VSS at the ABS module, though I'm not sure where that would be. Quote Link to post Share on other sites
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