Probably the easiest way to unplug ABS module connector. (Without speed signal servotronic will drop off.) Servotronic in fail mode will be heavier than non Servotronic rack.

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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