not sure how much help i can be here
when i look up by serial number it does not say invalid serial number, it just tells me information unavailable.
In the manual it does pull up it has none of these things contained in it that you mention as options or anything like it.
tilting cab, electric handbrake, air conditioning

The only tilting anything i can find is in the FD33N truck with tilting control lever option.
Of course keep in mind i'm looking in the mcfa manuals and not the mcfe manuals so there is quite a few differences between what the america's have as options versus what the euro trucks have apparently.
I want to help you out but it doesn't look encouraging for me on my end.

What sort of transmission codes is it giving? i may be able to help with that :o)