It happened because 10BS and your smartphone is still within the effective operation range .
To solve this problem, we suggest you to turn off the Bluetooth function from your phone.
For people whose garage is at home, the car kit can also be activated by motion in house. So in this case, you need to turn off the motion sensor feature when you leave the car. Do as the above instructions.
How to turn on / off the "Auto Power ON" function?