BMW Questions? Ask a BMW Repair Expert for Answers.
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Do you hear any clicking noises inside the vehicle or under the hood at all with this issue here when trying to start it?
Let me know,thanks Pete
Does this model use a push button start or the key itself?
Do the brake lights work when pressing on the brake when the ignition is on?
O.k.,with what you have described here this sounds like an internal electrical fault in the CAS (comfort access system) control module.This module is part of the start/stop switch and houses the starting switch.This module can fail internally causing this no crank/no start issue here.
What has to be done from here is to have the fault codes read out/checked with a fully compatible scan tool that can plug in and communicate with all computers in your model.Once this has been done any codes set need diagnosed to help locate and repair this issue here.This is one of the main components that will fail and cause this fault here.
If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.