I have connected a OBD2 adapter (Bluetooth ELM327) to my 2010 Mazda Axela (1990cc) and I've noticed that when my phone is connected to the adapter, the Mazda RVM alert lights on the side mirrors come on. (There was no other vehicles or obstacles around and the vehicle was stationary.)
When the phone is disconnected or the adapter is disconnected from the car, they go off after a few seconds.
Is this normal and expected?
I heard certain chinese knockoffs of ELM327 adapters can cause electrical issues with vehicles. So I want to know if it is safe to use the adapter with the car regularly for diagnostics and other things like dashboards on the phone .etc. using OBD2 data.