EWS is located on the left kick panel upper area. It's a white little box.

The temporary EWS bypass on mine was easy. I ordered a DME with EWS coded out. A fuse is inserted into the two large wire connections. With this mod though, any key or tool that turns the key cylinder will crank it.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)