Regarding the message "memory full", either cause you have up to five phones paired to the kit and you have to delete it.

but that could be also in relation with the install and especially the 12dc and the ignition 12v which has to be inverted (invert polarity) on the orange and the red one.

Finally, it could be a fault of settings to the box (cause the system for the ck3100 is build to the box).

Dear sir i have ck 3100 that comes up with memory full and cant clear it i hope u can tell me how to clear the memory if you can thanks