There is a bug on some of the DIM units that cause this problem.
There are three workarounds to this problem:

1. Do a complete reset of the vehicle by pulling the battery power (+) for a couple of seconds and then connect the power again.
2. Do a complete reset of the vehicle by connecting the StyleLight 2 to the OBD2 outlet and wait until the interior light make a flash and then immediately disconnect the StyleLight device.
3. Lock the vehicle and wait until it goes to sleep, after about 20min.