W211 starter not work

[neimy]

I have a car W211 sometimes start and sometimes does not start
and i test EZS and KEY it worked whats is the cause???
key switch open but did not start

[mercis]

check fuse,sam front,swap starter relay

[Akslock]

I have a car W211 sometimes start and sometimes does not start
and i test EZS and KEY it worked whats is the cause???
key switch open but did not startCould also be faulty steering lock.

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[ernene]

starter???????????????

[schouten1977]

test with spare key if have same problem