It's easy to install the remote above the ashtray/spectacles tray on the left side. It has easy hand access. I have mine there and like it.
This works better, of course, if you hardwire to the fusebox.
2015 SO/SO MT M3 Exec : Lighting : Adaptive : HK : CF trim : Full leather : DAP : Black 19's : sunshade
Crystalline tint 40%/70% on windshield : Gloss black grilles/side markers/exhaust tips : Painted front reflectors
V1 Savvy hardwired : Self-coded, will code locally for beer or food