I just purchased a 2004 545i a few weeks ago. I just had the dealer print out for me the option codes that came with the car and i have a few questions if someone can help me out.

What does option code 0697 DVD Area Coding, North America mean?

What does option code 0818 Battery Switch mean?

any help you can tell me would be appreciated.
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I don't know the specific number option codes, but different map DVDs are available for different areas of the world/North America/US. I think your option code just refers to the DVD provided with the vehicle when sold new. Your car shipped to a selling dealer with a battery disconnect switch (as do all new BMWs except for the e65/66). The dealership removes this device during the 'pre-delivery inspection' (PDI) before the vehicle is put onto the sales lot. Hope that helps.

Ask dealer to print out a detail RPO list. Amer cars call it a regular production option list. It is a safety switch to elminate the battery in the event of an accident or when shipping or storing the car.