I had this done on my x by the dealer and some other reprogramming as well and it was free of charge. I don't understand how any dealer would charge someone $$ for something that they should do more often. The only thing is most owners don't know that they can request this feature.

I had mine auto lock all doors after the car hits 5mph.

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'04 BMW X5 3.0i TitanSilber Metallic
'03 Lexus GX470 Black Onyx
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'03 BMW X5 3.0i Black Sapphire SOLD