All radar and safety systems failing every 10 seconds 2019 Q

[TobiasJ]

Hi everyone,
I’m having a really annoying problem with my 2019 Nissan Qashqai J11 (petrol). All the safety and radar-based systems have started to act up – the front collision warning, side collision, and blind spot warning all trigger in sequence.
The error messages appear, then reset, and come back roughly every 10 seconds, no matter what I do. In the beginning, it only happened once after the car had been parked for about a day, but now it happens constantly whenever the car is running.
The ADAS control unit has already been replaced by an official Nissan workshop, but the issue remains exactly the same. They’ve spent two full days diagnosing it without finding a clear fault. No specific sensor fault codes were stored either.
I’ve checked the camera wiring behind the rear-view mirror, since I know I’ve previously moved that cable slightly because it was creaking. I’ve opened the cover and inspected the connector — everything looked clean and fine, but I haven’t done more than that.
The sequence of warnings always starts with the front collision alert, then the side and blind spot systems follow a few seconds later.
The battery has been replaced by Nissan already so that is ruled out. 

At this point, I’m stuck. Has anyone seen similar behaviour on the J11?

https://share.icloud.com/photos/04aB5DH7H_CRWKt8RlSVHB7lQ

[Trevor]

`when did the fault start - following an accident or body damage?

[TobiasJ]

59 minutes ago, Trevor said:

`when did the fault start - following an accident or body damage?

Just out of the blue. No prior incident or anything out of the ordinary. 

[Trevor]

In the UK there is a windscreen company called Autoglass and they have all the equipment and necessary knowledge to set up the ADAS
If there is somewhere similar in Sweden that you could take the car to for a check and if necessary get them to set it up correctly