Trevor

I would use google lens and translate functions to define which controls do what

Hi....welcome to the Club Please let us know how you get on with it all Good to have you onboard

Hi .... welcome to the Club Nice collection of cars - good to have you onboard

Hi Simon...welcome to the Club You certainly have a good collection of Nissans Good to have you onboard

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

I have used a company before that specialise in aftermarket audio replacement https://www.iceboxauto.com/nissan-murano-2015-18-gps-navi-android-auto-11-carplay-oem-style-radio-ni072 Not sure if the one listed is the same style as it states it for a later model?

First thing I would have suggested is fitting a new good quality battery. Also, not entirely sure if maybe the stored battery voltage needs resetting with a scan tool

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

Hi ..... welcome to the Club It's a perfect car for local use more so than motorway but it should be mostly reliable and also economical Enjoy the forums

It does sounds like a loose or worn belt but equally I have found so many of the new belts nowadays are more silicon based than rubber based compound. They slip for a past time until they get warm. Try to stick to genuine manufacture belt (avoid anything made in china) Check also the tensioner is okay and if worn then replace this at the same time

there are some posts on google search relating to the PO409 code I would first start by running some cleaning solution through the fuel and give the engine a very long high revs run to burn off any excess carbon that has collected in the EGR or Intake Manifold

mostly timing chains are reliable if the correct servicing and maintenance is carried out when its specified and using quality oils and filters Please let us know how it goes !

possibly air mass meter is causing the jerking - try removing, cleaning and replacing Another possible cause could be the throttle pedal sensor needs replacing? Have you turned off the air conditioning as this will run a fan on start up

thanks for updating us and please let us know how it proceeds

Manufacturers were all found guilty of doctoring the figures by any means necessary - so they really are just guidelines. Your driving style, routes, terrain will all play a part in the overall fuel consumption....even air conditioning and having a roof box will play a part in the outcome