Questions on 2004 X5 4.4

[sumo]

Hi Guys!
I just bought a 2004 X5 4.4 with 67,000 miles on it. Think I got a OK deal on the price , but wanted to see if I should be concerned about any major issues in the near future. I have a few questions and will really appriciate answers from the experienced folks in the forum!

- I was wondering if I should buy the extended warrenty (Not BMW, third party) but that is around 2700 for 2 yrs/30K miles. The SAV does not have any issues apperently and still under the dealer warrenty of 30 days.

- Mirror auto fold (Same issue that many have encountered on this forum, mirrors not staying folded when the button is pressed). Has anybody found a DIY for this or do I need to take the SAV to the dealer?

- Another question is where can I find the Cigarette lighter under the dash since it was missing when I bought the SAV and if anybody knew the price for it?

- Also at this high milage, do I need to be worried about if something major might happen to the SAV? Any particular maintenance that I should be doing?

- Key memory does not seem to be working, how would I know if the keys were programmed to remember the setting?

- Any advice on maintaining the exterior during normal operation and snow?

Thanks in advance,
Sumo