MB-R class, w251 3.0L Diesel, 165kwh after key wrting key not working

[KTSprendimai]

Hey Guys,

Maybe somebody knows, we writed a new key in MB R-Class 2007 year, 3L Diesel, 165Kwh with MB-Tools, remote working, key test shows everything is ok, but car starting for one second and shutting down... like a VAG when doesn't see immo. But with original key everything ok

[brend]

One of the reasons may be calculated data for key not good .
Second the reasons may by , just bad key hardware .