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Originally Posted by Brian-bmw
It sounds like you may have a failed navigation computer. Is "GPS Malfunction" the exact error message that you are seeing in the service menu.
Typically, if you are getting something like this, the internal satellite receiver module is dead, or you have a bad antenna connection. The CPO support is a coin toss. Sometimes, you will get a claim rejected if it is deemed an "accessory" by BMW. Before you spent any real cash, I would check the GPS antenna cable connection. If that looks sound, you could buy a new GPS antenna and plug that in to the nav computer to see if it fixes it.
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The connection does look sound. I saw the antenna is mounted right behind the HK sub area. This past weekend I even removed the NAV computer and drive and reseated the connections.
What's weird is it may work fine for an entire week and then have problems for a couple drives then work fine again.
Another thing, in the service menu my Almanac is always at NO. I have never seen it say YES.
What is more probable, bad antenna or nav computer?
Thanks