Getting a BMW Spare Key The BMW's key fob could require an upgrade in battery. Perhaps you'd like to upgrade to a smart key, which replaces your smartphone with a compatible key. BMW will prepare replacement fobs for your vehicle by using its VIN. This is done to protect your https://carkeyrepairs14667.blog-a-story.com/10334574/how-do-you-know-if-you-re-at-the-right-level-for-bmw-key-1-series