Z8 Engine Start Button Install for the BMW E46 3 Series. This write up is a specific installation of a Z8 engine start button on the E46, but it can be used as a general guide for an engine start button on most BMW models. Remove the dashboard panel and small glove box from around the driver’s pedals and below the steering column – four Philips screws to remove the driver’s glove box, one plastic push pin rivet, one Philips screw and the clutch pedal stop screw to remove the main panel.
Remove the cover under and below the steering wheel/column. Two push pin rivets – push in the centre pins, they will fall loose, then pull downwards on the cover, it needs a bit of force to come free as there are plastic tabs holding the column surround together just behind the wheel. This will expose most of the area behind the lower driver’s dash, the ignition wiring loom and its switch terminals.

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