Finally get it fixed.
The problem is that , when user press brake, it cause alarm shut off eveything including INT-BMW2.
INTBMW2 is the only one can keep car takeover by user. No matter what CANBUS module you choose. You can sit in the car, you can press unlock many times., you dont have to close and open car door.
For takeover, must :
1. Unlock signal to white of INTBMW2
2. Must keep ignition signal to INTBMW2.(Manual of INTBMW2 missed this wire!! It says ignition to alarm. It must to car! not alarm! because pressing brake shutoff alarm's ignition together!) Must do connection as red line below.
3. Press brake within 45 seconds to shutoff alarm/remot starter. Let car ignition keep INTBMW2 running without WHILE RUNNING/Status signal.
I also add a relay to INTBMW, then user doesnt have to insert the key for PTS. PTS is similar with F platform BMW NOW.
That's it. perfect now.