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Discussion Starter #1
this is really annoying... i live in an apartment complex wiht an underground carpark... how can i get the nav+ to correctly locate my location one I get out?

i've been having to stop on the side once or twice to use the square to set my position.. nav+ must have a way to locate itself right? can someone teach me how to do that?

mine is a F unit.
 

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It takes about to 30sec - 1min for nav to find a current location. I had the same problem parking downtown in my office. Once you enter underground parking your last position is remembered but your car is still moving. When you exit your parking, navigation will think that last position=new position (after car is started) and it will continue from there or reset itself.

Unfortunately we can't do nothing about it because it is the way the nav is working.
 

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Discussion Starter #3
thanks.

so i just carry on driving and 30-1 minuate later it should sort itself out?

also... for some reason the nav+ always thinks i'm going slower than i actually am.. which means i'm always ahead of the triangle.. is this common and is there any way to 'fix' this?
 

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PROXUS said:
Unfortunately we can't do nothing about it because it is the way the nav is working.
Not just the RNS-E - all GPS based systems.

It's because the signals from the satellites are very weak, plus the satellites have moved since you parked (they are in low earth orbit), so normally takes a few seconds to regain the signal (worst case can be several minutes - longer if you live near the North or South Pole).
 

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adrianma said:
for some reason the nav+ always thinks i'm going slower than i actually am.. which means i'm always ahead of the triangle.. is this common and is there any way to 'fix' this?
That could be problem with your speed signal. Usually navigation is combining satellite signal with your speed information to provide accuracy in your position, but if your speed signal is off or interrupted then your position is calculated based on sat info which is retrieved every few sec.

While driving in open area...try to zoom your map to max and observe movement of your arrow. It is never smooth move but it shold be accurate (moving every 1-2 sec). If it is takeng more than 10 then you could have a problem.
 

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Discussion Starter #6
i have a 2003 b6a4 so i'm guessing the speed signal should be fine.. maybe i'm just expecting a bit 'too' much of the accuracy of the satnav
 

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The sat nav will normally show a position behind where you actually are - because the GPS location shows where you were, not where you are or where you will be.

Also the accuracy of a GPS location varies enormously - it can be anything from less than a metre to as much as 100 metres - depending on how many satellites you are receiving, how low they are in the sky, when their orbital position was last corrected, etc.
 
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