zoricib

Hey Vlad, I just keep it on aux (I have the ML sat nav for reference). Once connected it just plays a sound through the speakers of the car which just says "connected" and "disconnected" once you disconnect it if the stereo is still on. If you just shut the engine off it just disconnects as it has no power. By the way you won't be able to change tracks via the steering/radio controls, just adjust the volume. It works just an aux connection would in terms of what you can do via the car's controls. I use google assistant once in the car to change tracks on spotify. Not ideal, but compared with the price of the grom I'd say it's worth it.

I've installed an universal bluetooth adaptor in my armrest to play music from ( don't think it works for calls though) Here is the adaptor https://www.ebay.co.uk/itm/223550132778 ( Was also considering this, but haven't found a good location for it to be out of sight yet accessible to pick up calls. https://www.amazon.co.uk/dp/B01MSUWCZ0/ref=cm_sw_r_cp_apa_i_JwRkFbM5Z09SN ) Also got a ground isolator https://www.ebay.co.uk/itm/333306908036 And an L shape usb to protect the usb wire from the adaptor from breaking https://www.ebay.co.uk/itm/292074804774 I've also got an app for android (MacroDroid) on which I've set up a trigger for when my phone connects to the bluetooth adapter my data connection comes on and Spotify launches. Worked well so far, the sound is clear and it connects quick, but found that the bass doesn't really come through. All this cost me just over £13 btw, so it's cheap and cheerful.

Ahh misread that

FYI re the autolocking doors from the owners manual of a 2006 (55 reg) is250. Haven't tried to see if this works on mine though as the doors are always unlocked