mercedes c220 diesel ezs w203 problem

[maruti]

hello
i have problem with ezs w203 , key not turn in ezs
which tool help for it

thanks

[brahimdiag]

read your mcu ezs of calc news key

[leandroks]

Get it scanned by any tool and post the dtc code here, so we can get u some help..

[geeroam]

have key tested