new owner, a few questions

[lowpost]

Hi,

just got a 01 X5 sport and had a couple minor questions. I tried bimmerforums but they weren't much help.

1. My buddy told me that X5's have a problem with some valve freezing in cold weather which winds up blowing the motor. I think he's full of sh*t becasue I haven't seen anything about this, and I can't find anything on the web. Has anyone heard of something like this? He keeps telling me I better not take it up to the mountains.

2. Everytime I turn the car off and restart the car, the seat loses the last saved setting and I have to press the saved memory button - is this normal? When I restart the seat moves into some unknown position. Most cars retain the last preference setting.

3. I tried to put a frame on the rear license plate bracket, but the screws aren't long enough to thread into the bracket - is it just me or is this lame. Do the dealer license plate frames come with longer screws?

4. Can the navigation software be upgraded? I don't mean just the mapping but the interface and usability.

Thanks for your help!