Check out Diagnostic Software - Bimmerforums - The Ultimate BMW Forum
If you already have a laptop with serial port (in-built or add-on), you can have dealer-equivalent setup for less than $50 for your E53 X5. Take your time to peruse the above link - it's a gold mine as far as your query is concerned.
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.
Last edited by X5only; 01-26-2012 at 02:51 AM.
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