Hi robt, others seemed to suggest that the car couldn't be started using the key-card emergency-key, I was pointing out that [theoretically] it could be.
The handbook doesn't suggest that the alarm goes off when the door is opened using the emergency-key; is that a fault with yours or in the design of all Kadjars? I can't test mine as it's not here at the moment. I understand your concern about the what-if scenario. Renaults are not known for especially reliable electronics. I had a Scenic whose rear-wiper wouldn't switch-off; obviously not a good idea wiping a dry-screen continually. I found the correct fuse and it indeed stopped the wiper working, it also stopped the car being started! I took it to the dealer who "Reset" the system (?), the switch itself wasn't at fault.