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what does it do when it does not start?
but you say it doesn't start
so you press the button, what exactly happens when you press the button and it does not start?
does the starter motor turn over? does literally nothing happen? do you hear noises? etc?
do you have the last 7 digits of the vin available?
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your symptoms point most likely to a failing / failed IVM module (integrated supply module). This unit contains the starer relay.
this is a very common cause of an intermittent no start on your model / engine (as confirmed with your vin).
A replacement IVM is about $120. it is located in the electronics box in the engine compartment
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