I have a autowatch alarm system has built in turbo timer?

Now i want to disable the turbo timer part does any body know if this is possible . As i never use it and i think its giving me hassels.

I notice some times when i have been listening to the stereo system for a while (engine off) but ign on, i take key out and it doesnt shut off automatically, now becuase the engine isnt running.
i dont take notice and it has been on for some time.
so i have to press the button on remote to cut it.

now i would like to disable the feature completly in the alarm but have no idea how any body else know ? it must be a programing feature i dont know.

The guy who installed it is a dick so dont want to go back to him ill ring another company tomorrow but was hoping some one might know how
Tim