My nav dvd is in the trunk. I thought surely with updateable software they would have a decent nav system by now. I'm also mainly curious how the factory system works. I see you can get a whole head unit that has nav , bluetooth , plays mp3's, dvds for around 500.00 to 600.00 bucks. But i was hoping a blue tooth puck and updated nav disc would work and be a bit cheaper. I hate to just throw away a good system if it works ok. I'm gonna try it and take back the disc if it sucks. "This piece of crap can't even find my house which was built in 1988 " seems like a viable excuse.

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What Would Rudolph Do?
1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius