barneybrendan

hi
I have a 2014 cls 350 shooting brake.
only recently started happening is sometimes the car wont start.
I get in car and turn ignition to start the car turns over for a split second and stops.
I try again sometimes it does the same other times it cranks over more and starts.
This doesn't happen all the time sometimes it will start right away.
Anybody ever had this issue. car is on 67, 000 miles full mercedes service history.
Thanks