回复：不知道奔驰和宝马的按钮是怎么操作的？这里有开宝马奔驰的吗？

Only make sense for keyless access. With the keyless feature, it's actually very practical, especially for woman.

Women usually don't put the key in pocket liek men do. They leave keys in the purse. With the keyless access and button control, it comes very very handy. My wife loves it.