err.... from what my Service Agent told me... they decided to disable the feature (or remove it) due to complaints from owner that the system might go psycho on a rare occasion.... i for one really missed the feature and previously it never failed me ...

but now with the new vios.. just need to remember to lock it... but hmm i cant seems to remember that once we manually lock it.. will it automatically unlock once the engine is off? i believe its not...  so no safety la like this...   hmmm..