Bimmerfest - BMW Forums - View Single Post - 540i cranks one revolution and stops. Will not start
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Old 11-20-2012, 11:48 AM
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acoste acoste is offline
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Location: California
Join Date: Nov 2011
Posts: 3,359
Mein Auto: 2010 550i MT
The anti theft device (EWS) communicates with the engine control module for many reasons before and during cranking. Some conditions have to be met in order to start up the car. The start signal for the starter motor is driven by the EWS but this doesn't mean that EWS is the only decision maker there.
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