Is it the same with both/all keys?

Deleting EWS from DDE4 is quite involved task and not many have means to do it and if they do the cost can be the same as a new EWS module from the dealer.

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E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey