Re: 2001 E38 GPS system?

"Ivan Marsh" <annoyed@[EMAIL PROTECTED]
> wrote in message 
news:pan.2008.05.02.18.18.04.176524@[EMAIL PROTECTED]
> Hey,
>
> When I start my car the GPS system turns on and displays the accept
> agreement message.
>
> Is there any way to keep the GPS turned off until I need it?
>
> -- 
> "Remain calm, we're here to protect you!"
>

In order to work a GPS receiver has acquire a first fix.  There are three 
ways of doing this: -

Permananently on - Receiver stays on all the time.
Warm start - receiver remembers previous position from last use and uses 
this to update its position (and the time).
Cold Start - receiver makes no (or few) assumptions about its position and

sets about acquiring position etc. from scratch - this can take from
several 
minutes to nearly an hour.  This is a feature of the Navstar system.

A warm start is suitable for a car, because when the ignition is off it 
probably isn't moving, but it will get confused (e.g. after a ferry trip).

So for a BMW the GPS needs to be on when the ignition is on for it to work

acceptably.

Note some BMW's use information from the ABS sensors to help track
movement 
and orientation of the car.