Do you notice any other electronics sleeping or not working from time to time? If you have another car, try letting the X5 charge for a bit and see if that helps. If not, I have nothing--sounds like you'll have to wait for the parts.

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'08 BMW X5 4.8i *'06 Audi A3 2.0T DSG *'05 Audi S4 Cabriolet

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