increase wake on time with car engine switched off

[daverock]

Sorry for the poor question, but i'm very newbie of Android Car system and I need your help about this...

I have installed on my Opel Astra J a MTCC RK3188 unit with stock android 5.1.1

I'd like to listen to my music even when the car engine is turned off, but the unit shuts off after about 1 minute, even if I leave the key in the ignition in off position.
In the configuration option there is ACC DELAY time, but this is the time that elapses between the status of the car is turned off (ACC OFF) and the complete shutdown of radio, up to that time the radio goes into deep sleep, in fact if I restart the car the radio switches on at once without doing the startup complete procedure .
I think that this value does not change in any way the time that elapses between the car engine off and the time which the radio can stay up without going into deep sleep.

There a way to change and increase this time, for example to 10 minutes?
How to change and extend this time?
It could be that the mod ROM's gives me more time?

Thanks

 

[shtirlitz111]

You can increase it. It is in the settings.

 

[daverock]

How can I do this?

In settings I find only the sleep time before completely shutdown, but no option to having the radio on after turning off the engine...

 

[shtirlitz111]

I thought you wanted to tweak the time between sleep and shut down. Seems like you found that one already.
Maybe your car cuts the acc line to the stereo after certain amount of time?

 

[daverock]

I think the canbus of the car send a signal when I turn the key in off position.
I also think that the radio has powered, because when after about 2 minutes turns off, I can see the "shutdown" toast before it going into sleep (It does the same type of poweroff procedure that it would do if I open a car door when key ignition is switched off).
If the radio was no more supply from the car, I think it would go off without giving any notice.
For these reasons, I was wondering if somehow I could configure this time.

 

[daverock]