Was the car in any kind of accident? Airbags deployed? Have you checked the small ground cable between frame rail and right side engine mount? Sometimes that can cause a no start situation.
If you think its the EWS or key, we should have complete sets including DME for that car.
Specialized in BMW recycling, all OEM used parts
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Most models E30 E36 E46 E90 E92 E34 E39 E60 E32 E38 E65 E66 X5 M3 M5
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